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Liu S, Zhou C, Liu AD, Zhuang G, Feng X, Zhang J, Zhong XM, Ji JX, Zhang SB, Liu HQ, Wang SX, Fan HR, Wang SF, Gao LT, Shi WX, Chen XY, Liu WD. An E-band multi-channel Doppler backscattering system on EAST. Rev Sci Instrum 2023; 94:123507. [PMID: 38109469 DOI: 10.1063/5.0166949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 11/28/2023] [Indexed: 12/20/2023]
Abstract
An E-band (60-90 GHz) multi-channel Doppler backscattering (DBS) system with X-mode polarization has been installed on the Experimental Advanced Superconducting Tokamak (EAST), which can measure the turbulence at five different radial locations simultaneously. This system can launch 31 fixed microwave frequencies in the range of 60-90 GHz with a 1 GHz interval into the plasma, and five probing signals are selected by employing a reference signal and multiple filters. During experiments, the frequency of the reference signal is tunable in the E-band, and the selected probing signals can be changed as needed without any other adjustments, which can be performed in one shot or between shots. Furthermore, the incident angle can be adjusted from -10° to 20°, and the wavenumber range is 4-25 cm-1 with a wavenumber resolution of Δk/k ≤ 0.35. Ray tracing simulations are employed to calculate the scattering locations and the perpendicular wavenumber. In this article, the hardware design, ray tracing, and initial results obtained from the EAST plasma will be presented.
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Affiliation(s)
- S Liu
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - C Zhou
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - A D Liu
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - G Zhuang
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - X Feng
- Shenzhen University, Shenzhen, Guangdong 518061, China
| | - J Zhang
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - X M Zhong
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - J X Ji
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - S B Zhang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230021, China
| | - H Q Liu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230021, China
| | - S X Wang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230021, China
| | - H R Fan
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - S F Wang
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - L T Gao
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - W X Shi
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - X Y Chen
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - W D Liu
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
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2
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Rodrigues F, Georgelin T, Rigaud B, Zhuang G, Fonseca MG, Valtchev V, Jaber M. Deadlocks of adenine ribonucleotide synthesis: evaluation of adsorption and condensation reactions in a zeolite micropore space. Inorg Chem Front 2022. [DOI: 10.1039/d2qi00837h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we report on adenine, d-ribose, and monophosphate adsorption/co-adsorption into the synthetic analog of the zeolite mineral mordenite followed by drying at 50 °C and thermal activation at 150 °C under an argon atmosphere.
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Affiliation(s)
- Francisco Rodrigues
- Sorbonne University, CNRS UMR 8220, Laboratoire d'Archéologie Moléculaire et Structurale, 4 place Jussieu, F-75005 Paris, France
- State University of Paraíba, UEPB, Department of Chemistry, Campina Grande, Paraíba, Brazil
| | - Thomas Georgelin
- Centre de Biophysique Moléculaire, CNRS, Rue Charles Sadron, 45000 Orléans, France
| | - Baptiste Rigaud
- CNRS Institut des Matériaux de Paris Centre (FR2482), 4 place jussieu, 75005 Paris, France
| | - Guanzheng Zhuang
- Sorbonne University, CNRS UMR 8220, Laboratoire d'Archéologie Moléculaire et Structurale, 4 place Jussieu, F-75005 Paris, France
| | | | - Valentin Valtchev
- Normandy University, Laboratoire Catalyse & Spectrochimie, ENSICAEN, 6 bl Maréchal Juin, 14050 Caen, France
| | - Maguy Jaber
- Sorbonne University, CNRS UMR 8220, Laboratoire d'Archéologie Moléculaire et Structurale, 4 place Jussieu, F-75005 Paris, France
- Institut Universitaire de France, France
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3
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Ji JX, Liu AD, Zhou C, Zhuang G, Zhang J, Feng X, Liu ZY, Zhong XM, Fan HR, Zhang SB, Liu Y, Hu LQ, Mao WZ, Lan T, Xie JL, Li H, Liu ZX, Liu WD. The cross-polarization scattering system for the magnetic fluctuation measurement in the Experimental Advanced Superconducting Tokamak. Rev Sci Instrum 2021; 92:043511. [PMID: 34243396 DOI: 10.1063/5.0012520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 03/16/2021] [Indexed: 06/13/2023]
Abstract
The cross-polarization scattering (CPS) system for magnetic fluctuation measurements in the Experimental Advanced Superconducting Tokamak (EAST) has been designed and installed. Different from the Doppler reflectometer (DR) system, the CPS system detects the perpendicular polarization of the electromagnetic wave induced by magnetic fluctuations B̃. The CPS system in the EAST has been developed from the existing Doppler reflectometer system, and they are integrated together for simultaneous measurement of magnetic and density fluctuations. Ray-tracing simulations are used to calculate the scattering locations and the wavenumber coverage of the magnetic fluctuation for CPS. In the experiments, the CPS and DR system data were different in Doppler shift, amplitude, and spectrum broadening. In this article, the hardware design, the ray tracing, and the preliminary results of the system in the EAST are presented.
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Affiliation(s)
- J X Ji
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - A D Liu
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - C Zhou
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - G Zhuang
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - J Zhang
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - X Feng
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Z Y Liu
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - X M Zhong
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - H R Fan
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - S B Zhang
- Institute of Plasma Physics, Chinese Academy of Sciences, Anhui, Hefei 230021, China
| | - Y Liu
- Institute of Plasma Physics, Chinese Academy of Sciences, Anhui, Hefei 230021, China
| | - L Q Hu
- Institute of Plasma Physics, Chinese Academy of Sciences, Anhui, Hefei 230021, China
| | - W Z Mao
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - T Lan
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - J L Xie
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - H Li
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Z X Liu
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - W D Liu
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
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4
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Rodrigues F, Georgelin T, Gabant G, Rigaud B, Gaslain F, Zhuang G, Gardênnia da Fonseca M, Valtchev V, Touboul D, Jaber M. Confinement and Time Immemorial: Prebiotic Synthesis of Nucleotides on a Porous Mineral Nanoreactor. J Phys Chem Lett 2019; 10:4192-4196. [PMID: 31305079 DOI: 10.1021/acs.jpclett.9b01448] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We report the successful one-pot synthesis of adenosine mono-, di-, and triphosphate in the confined space of a mordenite zeolite. This is also the first report of ATP synthesized onto a porous mineral surface. The results revealed a plausible prebiotic route to ribonucleotides and highlighted the contribution of microporous minerals in the origins of life.
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Affiliation(s)
- Francisco Rodrigues
- Sorbonne University , CNRS UMR 8220, Laboratoire d'Archéologie Moléculaire et Structurale , 4 Place Jussieu , F-75005 Paris , France
- Department of Chemistry , State University of Paraíba , UEPB, Campina Grande , Paraíba 58429-500, Brazil
| | - Thomas Georgelin
- Centre de Biophysique Moléculaire , CNRS, Rue Charles Sadron, 45000 Orléans , France
| | - Guillaume Gabant
- Centre de Biophysique Moléculaire , CNRS, Rue Charles Sadron, 45000 Orléans , France
| | - Baptiste Rigaud
- CNRS Institut des Matériaux de Paris Centre (FR2482) , 4 Place Jussieu , 75005 Paris , France
| | - Fabrice Gaslain
- MINES ParisTech , PSL - Research University , MAT - Centre des Matériaux, CNRS UMR 7633, BP 87, F-91003 Evry , France
| | - Guanzheng Zhuang
- Sorbonne University , CNRS UMR 8220, Laboratoire d'Archéologie Moléculaire et Structurale , 4 Place Jussieu , F-75005 Paris , France
| | - Maria Gardênnia da Fonseca
- Department of Chemistry , Federal University of Paraíba , UFPB, João Pessoa , Paraíba 58059-900 , Brazil
| | - Valentin Valtchev
- Normandy University , Laboratoire Catalyse & Spectrochimie, ENSICAEN , 6 bl Maréchal Juin , 14050 Caen , France
| | - David Touboul
- CNRS-Institut de Chimie des Substances Naturelles, UPR2301 , Université Paris-Saclay , 91198 Gif-sur-Yvette cedex, France
| | - Maguy Jaber
- Sorbonne University , CNRS UMR 8220, Laboratoire d'Archéologie Moléculaire et Structurale , 4 Place Jussieu , F-75005 Paris , France
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5
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Zhuang G, Jaber M, Rodrigues F, Rigaud B, Walter P, Zhang Z. A new durable pigment with hydrophobic surface based on natural nanotubes and indigo: Interactions and stability. J Colloid Interface Sci 2019; 552:204-217. [PMID: 31129294 DOI: 10.1016/j.jcis.2019.04.072] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 04/17/2019] [Accepted: 04/23/2019] [Indexed: 11/24/2022]
Abstract
Covering with polyorganosilane (POS) was proved as an effective way to enhance the chemical and thermal stability of clay/dye hybrid pigments. But the photostability and interactions with clay minerals, dyes and POS layer has never been reported. In order to investigate above issues, new organic-inorganic hybrid pigments based on halloysite (Hal) and indigo (In) were prepared by grinding method. X-ray diffraction, transmission electron microscopy, thermogravimetry, Fourier transform infrared spectroscopy were applied to characterize the structure of In-Hal (without POS layer) and In-Hal-POS (with POS layer) pigments. Solid state nuclear magnetic resonance (NMR) was employed to reveal the interactions between Hal, In and POS. Reflection spectra and CIE 1976 color space system were used to evaluate the color parameters and color changes of pigments. Thermal stability, chemical resistance to ethanol, 1 mol·L-1 HCl and 1 mol⋅L-1 NaOH, and light fastness to visible light were tested. Indigo molecules dispersed on the surface of Hal nanotubes. POS layer homogeneously covered on the surface of hybrid pigments, without changing the crystal structure and morphology of Hal. Covering with POS layer seldomly affect the color of hybrid pigments. However, In-Hal-POS exhibited better stability than In-Hal, due to hydrophobic surface which can prevent indigo molecules from chemical reactions and degradation. A new route was proposed to prepare organic-inorganic hybrid pigments, ignoring the interaction between dye molecules and substrates.
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Affiliation(s)
- Guanzheng Zhuang
- Sorbonne Université, Laboratoire d'Archéologie Moléculaire et Structurale (LAMS), CNRS UMR 8220, Case Courrier 225, UPMC 4 Pl. Jussieu, 75005 Paris Cedex 05, France; Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Xueyuan Road, Haidian District, Beijing 100083, PR China
| | - Maguy Jaber
- Sorbonne Université, Laboratoire d'Archéologie Moléculaire et Structurale (LAMS), CNRS UMR 8220, Case Courrier 225, UPMC 4 Pl. Jussieu, 75005 Paris Cedex 05, France.
| | - Francisco Rodrigues
- Sorbonne Université, Laboratoire d'Archéologie Moléculaire et Structurale (LAMS), CNRS UMR 8220, Case Courrier 225, UPMC 4 Pl. Jussieu, 75005 Paris Cedex 05, France; Chemistry Department of State University of Paraiba (UEPB), Center of Science and Technology (CCT), Av. Juvêncio Arruda, s/n - Universitário, Campina Grande 58109-790, Paraiba, Brazil
| | - Baptiste Rigaud
- Sorbonne Uniersité, CNRS Institut des Matériaux de Paris Centre (FR2482), 4 Place Jussieu, 75005 Paris, France
| | - Philippe Walter
- Sorbonne Université, Laboratoire d'Archéologie Moléculaire et Structurale (LAMS), CNRS UMR 8220, Case Courrier 225, UPMC 4 Pl. Jussieu, 75005 Paris Cedex 05, France
| | - Zepeng Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Xueyuan Road, Haidian District, Beijing 100083, PR China
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6
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Zhuang G, Jiang W, Zhang Z. Organic Modifiers of Organo-Montmorillonite in Oil System under High Temperatures: Desorption or Degradation? Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b05915] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guanzheng Zhuang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Xueyuan Road, Haidian
District, Beijing 100083, PR China
| | - Wenbo Jiang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Xueyuan Road, Haidian
District, Beijing 100083, PR China
| | - Zepeng Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Xueyuan Road, Haidian
District, Beijing 100083, PR China
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7
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Feng X, Liu AD, Zhou C, Wang MY, Zhang J, Liu ZY, Liu Y, Zhou TF, Zhang SB, Kong DF, Hu LQ, Ji JX, Fan HR, Li H, Lan T, Xie JL, Mao WZ, Liu ZX, Ding WX, Zhuang G, Liu WD. Five-channel tunable W-band Doppler backscattering system in the experimental advanced superconducting tokamak. Rev Sci Instrum 2019; 90:024704. [PMID: 30831725 DOI: 10.1063/1.5075615] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 01/18/2019] [Indexed: 06/09/2023]
Abstract
A 5-channel Doppler backscattering system has been designed and installed in the Experimental Advanced Superconducting Tokamak (EAST). Through an I/Q-type double sideband modulator and a frequency multiplier, an array of finely spaced (Δf = 400 MHz) frequencies that span 1.6 GHz has been created. The center of the array bandwidth is tunable within the range of 75-97.8 GHz, which covers most of the W band (75-110 GHz). The incident angle can be adjusted from -4° to 12°, and the wavenumber range is 4-15 cm-1 with a wavenumber resolution of Δk/k ≤ 0.35. Ray tracing is used to calculate the scattering location and the scattering wavenumber. This article details the hardware design, the ray tracing, and the preliminary experimental results from EAST plasmas.
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Affiliation(s)
- X Feng
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - A D Liu
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - C Zhou
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - M Y Wang
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - J Zhang
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - Z Y Liu
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - Y Liu
- Institute of Plasma Physics, Chinese Academy of Sciences, Anhui, Hefei 230031, China
| | - T F Zhou
- Institute of Plasma Physics, Chinese Academy of Sciences, Anhui, Hefei 230031, China
| | - S B Zhang
- Institute of Plasma Physics, Chinese Academy of Sciences, Anhui, Hefei 230031, China
| | - D F Kong
- Institute of Plasma Physics, Chinese Academy of Sciences, Anhui, Hefei 230031, China
| | - L Q Hu
- Institute of Plasma Physics, Chinese Academy of Sciences, Anhui, Hefei 230031, China
| | - J X Ji
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - H R Fan
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - H Li
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - T Lan
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - J L Xie
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - W Z Mao
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - Z X Liu
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - W X Ding
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - G Zhuang
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - W D Liu
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
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8
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Xie XL, Yang ZJ, Pan XM, Zhu YL, Zhou J, Zhou H, Zhuang G. Hyperbolic lens design of local oscillator optics system for electron cyclotron emission imaging on J-TEXT. Rev Sci Instrum 2018; 89:10H101. [PMID: 30399902 DOI: 10.1063/1.5035098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
An electron cyclotron emission imaging diagnostic system that contains two 16-antenna arrays is being developed on J-TEXT tokamak. In this heterodyne system, the mixers in the front microwave antenna are used to down-convert the electron cyclotron emission to a 2-12 GHz radio frequency. All of the 24 antenna mixers in the individual enclosure box are driven by shining local oscillator (LO) power via launching optics. The previous approach for LO optics was designed with spherical and cylinder lenses, which has limitations such as the inhomogeneity of the energy deposition on different channels and the difficulty of optics alignment. A new generation of LO optics has been designed and applied on J-TEXT with a hyperbolic lens for uniform power deposition across the entire antenna array. The robustness of the optical alignment will be significantly increased with three hyperbolic lenses. Furthermore, the simulation results and robustness analysis of these LO optics are discussed in this paper.
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Affiliation(s)
- X L Xie
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z J Yang
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - X M Pan
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Y L Zhu
- University of California, Davis, California 95616, USA
| | - J Zhou
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - H Zhou
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - G Zhuang
- Department of Modern Physics, School of Physical Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
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9
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Shi P, Qiu QS, Zhuang G, Gao L, Zhou YN, Zhou CX. Measurement of density fluctuation propagation direction via the far-forward collective scattering diagnostic based on polarimeter-interferometer. Rev Sci Instrum 2018; 89:10C110. [PMID: 30399876 DOI: 10.1063/1.5038845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Accepted: 08/06/2018] [Indexed: 06/08/2023]
Abstract
Previously, the 17-channel three-wave polarimeter-interferometer system (POLARIS) on the J-TEXT tokamak has been implemented to measure far-forward collective scattering (FFCS) from electron density fluctuations. Recently, this system has been exploited to measure the propagation direction of density fluctuation. After considering the refraction of the laser probe beam passing through plasma, the ray tracing result shows that the detector of POLARIS may receive asymmetric far-forward scattering beams. Thus, the heterodyne detection of FFCS is available to identify the propagation direction of density fluctuation by resolving the asymmetric scattering spectrum. Experimentally, the transform of the heterodyne scattering spectrum from symmetry to asymmetry has been observed, while the refraction effect becomes strong demonstrating the capacity of measuring the propagation direction of fluctuation. Furthermore, by changing the plasma potential through the use of an applied positive electrode biasing, the reverse of frequency shift for the heterodyne scattering spectrum is identified, confirming the validity of direction discrimination of density fluctuation.
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Affiliation(s)
- P Shi
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Q S Qiu
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - G Zhuang
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - L Gao
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Y N Zhou
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - C X Zhou
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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10
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Wang MY, Zhou C, Liu AD, Zhang J, Liu ZY, Feng X, Ji JX, Li H, Lan T, Xie JL, Liu SQ, Ding WX, Mao WZ, Zhuang G, Liu WD. A novel, tunable, multimodal microwave system for microwave reflectometry system. Rev Sci Instrum 2018; 89:093501. [PMID: 30278705 DOI: 10.1063/1.5033968] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Accepted: 08/14/2018] [Indexed: 06/08/2023]
Abstract
Based on a new technique, a tunable, multi-channel system that covers the Q-band (33-55 GHz) is presented in this article. It has a potential use of the Doppler backscattering system diagnostic that can measure the turbulence radial correlation and the perpendicular velocity of turbulence by changing the incident angle. The system consists primarily of a double-sideband (DSB) modulation and a multiplier, which creates four probing frequencies. The probing frequency enables the simultaneous analysis of the density fluctuations and flows at four distinct radial regions in tokamak plasma. The amplitude of the probing frequency can be adjusted by the initial phase of the intermediate frequency (IF) input from the double-sideband, and the typical flatness is less than 10 dB. The system was tested in the lab with a rotating grating, and the results show that the system can operate in the frequency range of 33-55 GHz with a Q-band multitude and that the power of each channel can be adjusted by the phase of the IF input of DSB.
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Affiliation(s)
- M Y Wang
- Department of Physics, Nanchang University, Nanchang 330031, China
| | - C Zhou
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - A D Liu
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - J Zhang
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - Z Y Liu
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - X Feng
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - J X Ji
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - H Li
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - T Lan
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - J L Xie
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - S Q Liu
- Department of Physics, Nanchang University, Nanchang 330031, China
| | - W X Ding
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - W Z Mao
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - G Zhuang
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - W D Liu
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
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11
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Zhang Y, Zhang Y, Gao J, Shen Q, Bai Z, Zhuang X, Zhuang G. Optimization of the medium for the growth ofNitrobacter winogradskyiby statistical method. Lett Appl Microbiol 2018; 67:306-313. [DOI: 10.1111/lam.13036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 06/17/2018] [Accepted: 06/19/2018] [Indexed: 11/30/2022]
Affiliation(s)
- Y. Zhang
- CAS Key Laboratory of Environmental Biotechnology; Research Center for Eco-Environmental Sciences; Chinese Academy of Sciences; Beijing China
| | - Y. Zhang
- CAS Key Laboratory of Environmental Biotechnology; Research Center for Eco-Environmental Sciences; Chinese Academy of Sciences; Beijing China
- University of the Chinese Academy of Sciences; Beijing China
| | - J. Gao
- CAS Key Laboratory of Environmental Biotechnology; Research Center for Eco-Environmental Sciences; Chinese Academy of Sciences; Beijing China
- University of the Chinese Academy of Sciences; Beijing China
| | - Q. Shen
- CAS Key Laboratory of Environmental Biotechnology; Research Center for Eco-Environmental Sciences; Chinese Academy of Sciences; Beijing China
- University of the Chinese Academy of Sciences; Beijing China
| | - Z. Bai
- CAS Key Laboratory of Environmental Biotechnology; Research Center for Eco-Environmental Sciences; Chinese Academy of Sciences; Beijing China
- University of the Chinese Academy of Sciences; Beijing China
| | - X. Zhuang
- CAS Key Laboratory of Environmental Biotechnology; Research Center for Eco-Environmental Sciences; Chinese Academy of Sciences; Beijing China
- University of the Chinese Academy of Sciences; Beijing China
| | - G. Zhuang
- CAS Key Laboratory of Environmental Biotechnology; Research Center for Eco-Environmental Sciences; Chinese Academy of Sciences; Beijing China
- University of the Chinese Academy of Sciences; Beijing China
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12
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Zhuang G, Zhang Z, Jaber M, Gao J, Peng S. Comparative study on the structures and properties of organo-montmorillonite and organo-palygorskite in oil-based drilling fluids. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.07.017] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Xia D, Huang M, Wang H, Wang Z, Zhang F, Chen G, Xiao J, Zhuang G. Design of dual-frequency transmission lines for the ECRH system on HL–2M. Fusion Engineering and Design 2017. [DOI: 10.1016/j.fusengdes.2017.04.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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14
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Zhuang G, Zhang Z, Wu H, Zhang H, Zhang X, Liao L. Influence of the nonionic surfactants’ nature on the structures and properties of organo-montmorillonites. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.01.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Zhu LZ, Chen ZP, Li FM, Liu H, Chen ZY, Zhuang G. Diamagnetic measurements based on the compensation of TF current diffusion in J-TEXT. Rev Sci Instrum 2016; 87:11D420. [PMID: 27910511 DOI: 10.1063/1.4960413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Due to the existence both of toroidal ripples and toroidal field (TF) current diffusion, the toroidal flux changes with time when the TF current is at the flat-top. A diamagnetic measurement based on the compensation of TF current diffusion has been built in J-TEXT to solve this problem. The measurement system includes a double-loop installed in the vacuum vessel and an array of small printed circuit board (PCB) magnetic probes placed on the mid-plane of one TF coil. A model was proposed to analyze and compensate the effect of TF current diffusion. Experiment results show that the residual flux is about 1 × 10-4 Wb after the compensation and it can meet the need of diamagnetic measurement in J-TEXT.
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Affiliation(s)
- L Z Zhu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z P Chen
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - F M Li
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - H Liu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z Y Chen
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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16
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Liu C, Xia D, Sun D, Wang Z, Xiao J, Zeng Z, Cui F, Yu Z, Zhuang G. Design of a polarization-controlled launcher for the ECH system on J-TEXT. Fusion Engineering and Design 2016. [DOI: 10.1016/j.fusengdes.2016.06.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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17
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Shi P, Chen J, Gao L, Liu Y, Liu H, Zhou YN, Zhuang G. Far-forward collective scattering measurements by FIR polarimeter-interferometer on J-TEXT tokamak. Rev Sci Instrum 2016; 87:11E110. [PMID: 27910372 DOI: 10.1063/1.4960067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The multi-channel three-wave polarimeter-interferometer system on J-TEXT tokamak has been exploited to measure far-forward collective scattering from electron density fluctuations. The diagnostic utilizes far infrared lasers operated at 432 μm with 17-channel vertical chords (3 cm chord spacing), covering the entire cross section of plasma. Scattering laser power is measured using a high-sensitivity Schottky planar diode mixer which can also detect polarimetric and interferometric phase simultaneously. The system provides a line-integrated measurement of density fluctuations with maximum measurable wave number: k⊥max ≤ 2 cm-1 and time response up to 350 kHz. Feasibility of the diagnostic has been tested, showing higher sensitivity to detect fluctuation than interferometric measurement. Capability of providing spatial-resolved information of fluctuation has also been demonstrated in preliminary experimental applications.
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Affiliation(s)
- P Shi
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - J Chen
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - L Gao
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Y Liu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - H Liu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Y N Zhou
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
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18
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Tong RH, Chen ZY, Zhang M, Huang DW, Yan W, Zhuang G. Observation of runaway electrons by infrared camera in J-TEXT. Rev Sci Instrum 2016; 87:11E113. [PMID: 27910692 DOI: 10.1063/1.4960311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
When the energy of confined runaway electrons approaches several tens of MeV, the runaway electrons can emit synchrotron radiation in the range of infrared wavelength. An infrared camera working in the wavelength of 3-5 μm has been developed to study the runaway electrons in the Joint Texas Experimental Tokamak (J-TEXT). The camera is located in the equatorial plane looking tangentially into the direction of electron approach. The runaway electron beam inside the plasma has been observed at the flattop phase. With a fast acquisition of the camera, the behavior of runaway electron beam has been observed directly during the runaway current plateau following the massive gas injection triggered disruptions.
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Affiliation(s)
- R H Tong
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Z Y Chen
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - M Zhang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - D W Huang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - W Yan
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
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19
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Yan W, Chen ZY, Jin W, Lee SG, Shi YJ, Huang DW, Tong RH, Wang SY, Wei YN, Ma TK, Zhuang G. Measurement of the electron and ion temperatures by the x-ray imaging crystal spectrometer on joint Texas experimental tokamak. Rev Sci Instrum 2016; 87:11E318. [PMID: 27910481 DOI: 10.1063/1.4960060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
An x-ray imaging crystal spectrometer has been developed on joint Texas experimental tokamak for the measurement of electron and ion temperatures from the Kα spectra of helium-like argon and its satellite lines. A two-dimensional multi-wire proportional counter has been applied to detect the spectra. The electron and ion temperatures have been obtained from the Voigt fitting with the spectra of helium-like argon ions. The profiles of electron and ion temperatures show the dependence on electron density in ohmic plasmas.
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Affiliation(s)
- W Yan
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Z Y Chen
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - W Jin
- Center of Interface Dynamics for Sustainability, China Academy of Engineering Physics, Chengdu, Sichuan 610200, People's Republic of China
| | - S G Lee
- National Fusion Research Institute, Daejeon 305-333, South Korea
| | - Y J Shi
- Department of Nuclear Engineering, Seoul National University, Seoul 08826, South Korea
| | - D W Huang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - R H Tong
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - S Y Wang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Y N Wei
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - T K Ma
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
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20
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Chen ZY, Huang DW, Tong RH, Yan W, Wei YN, Ma TK, Jiang ZH, Zhang XQ, Chen ZP, Yang ZJ, Zhuang G. Measurement of the internal magnetic fluctuation by the transport of runaways on J-TEXT. Rev Sci Instrum 2016; 87:11E304. [PMID: 27910575 DOI: 10.1063/1.4959876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The measurement of internal magnetic fluctuation is important for the study of transport in tokamak plasmas. The runaway electron transport induced by the sawtooth crash can be used to obtain the internal magnetic fluctuation. Inversed sawtooth-like activities on hard x-ray (HXR) fluxes following sawtooth activities were observed after the application of electrode biasing on J-TEXT tokamak. The runaway diffusion coefficient Dr is deduced to be about 30 m2/s according to the time delay of HXR flux peaks to the sawtooth crashes. The averaged value of normalized magnetic fluctuation in the discharges with electrode biasing was increased to the order of 1 × 10-4.
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Affiliation(s)
- Z Y Chen
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - D W Huang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - R H Tong
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - W Yan
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Y N Wei
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - T K Ma
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Z H Jiang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - X Q Zhang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Z P Chen
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Z J Yang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
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21
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Yan W, Chen Z, Jin W, Huang D, Lee S, Shi Y, Tong R, Wang S, Wei Y, Ma T, Zhuang G. Phenomena of non-thermal electrons from the X-ray imaging crystal spectrometer on J-TEXT tokamak. Fusion Engineering and Design 2016. [DOI: 10.1016/j.fusengdes.2016.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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22
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Wang JR, Cheng ZF, Li Z, Li Y, Luo J, Zhang XL, Zhuang G. Measurement of diagnostic neutral beam parameters on J-TEXT. Rev Sci Instrum 2016; 87:11E532. [PMID: 27910615 DOI: 10.1063/1.4961285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A Doppler frequency shift spectrum (DFSS) system composed of two spectrometers has been developed for the joint Texas experimental tokamak to measure diagnostic neutral beam parameters including the beam energy fractions, intensity distributions, and divergences. The beam energy fractions are derived from measurements of H-alpha (Hα) emission using collisional excitation cross sections. The beam intensity distributions are obtained using an 11-channel measurement with a reconstruction technique. The beam divergences are obtained from spectrum broadening and geometric calculations. The results of preliminary investigations indicate that the DFSS system works well and can be used to obtain all of these parameters simultaneously. According to the preliminary experiment, the one-third energy fraction has the largest proportion (about 45%) of the beam energy and the full energy fraction is about 10%. The beam diameter is about 8.1 cm at a distance of 2.04 m from the accelerator. The beam divergence angle is about 3.3°. The current beam parameters are insufficient for charge-exchange measurements.
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Affiliation(s)
- J R Wang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z F Cheng
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z Li
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Y Li
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - J Luo
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - X L Zhang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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23
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Pan XM, Yang ZJ, Ma XD, Zhu YL, Luhmann NC, Domier CW, Ruan BW, Zhuang G. Design of the 2D electron cyclotron emission imaging instrument for the J-TEXT tokamak. Rev Sci Instrum 2016; 87:11E106. [PMID: 27910430 DOI: 10.1063/1.4959875] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A new 2D Electron Cyclotron Emission Imaging (ECEI) diagnostic is being developed for the J-TEXT tokamak. It will provide the 2D electron temperature information with high spatial, temporal, and temperature resolution. The new ECEI instrument is being designed to support fundamental physics investigations on J-TEXT including MHD, disruption prediction, and energy transport. The diagnostic contains two dual dipole antenna arrays corresponding to F band (90-140 GHz) and W band (75-110 GHz), respectively, and comprises a total of 256 channels. The system can observe the same magnetic surface at both the high field side and low field side simultaneously. An advanced optical system has been designed which permits the two arrays to focus on a wide continuous region or two radially separate regions with high imaging spatial resolution. It also incorporates excellent field curvature correction with field curvature adjustment lenses. An overview of the diagnostic and the technical progress including the new remote control technique are presented.
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Affiliation(s)
- X M Pan
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Z J Yang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - X D Ma
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Y L Zhu
- School of Physics, University of Science and Technology of China, Anhui 230026, China
| | - N C Luhmann
- Davis Millimeter Wave Research Center, University of California, Davis, California 95616, USA
| | - C W Domier
- Davis Millimeter Wave Research Center, University of California, Davis, California 95616, USA
| | - B W Ruan
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
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24
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Zhang S, Ma Q, Liang S, Xiao H, Zhuang G, Zou Y, Tan H, Liu J, Zhang Y, Zhang L, Feng X, Xue L, Hu D, Cui F, Liang X. Annual economic burden of hepatitis B virus-related diseases among hospitalized patients in twelve cities in China. J Viral Hepat 2016; 23:202-10. [PMID: 26663525 DOI: 10.1111/jvh.12482] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 08/26/2015] [Indexed: 12/09/2022]
Abstract
A nationwide survey of hepatitis B virus (HBV)-associated economic burden has not previously been performed in China. The purpose of this study was to examine the direct, indirect, and intangible costs of HBV-related diseases within the span of one year. A random sample was taken from specialty and general hospitals across 12 cities in six provinces of China. Intangible costs were estimated based on willingness to pay or open-ended answers provided by patients. The results showed that 27 hospitals were enrolled, with a sample population of 4726 patients (77.7% response rate). The average annual costs were $4454.0 (direct), $924.3 (indirect), and $6611.10 (intangible), corresponding to 37.3%, 7.7%, and 55.1% of the total costs, respectively. The direct medical fees were substantially greater than the non-medical fees. Annual indirect costs were divided into outpatient ($112.9) and inpatient ($811.40) loss of income. The intangible costs of chronic HBV were notably higher than either the direct or indirect costs, consistent with the social stigma in China. The comparison amongst individual cities for the average ratio of direct to indirect costs revealed that the sizes of ratios were negatively correlated with the socioeconomic status of the regions. This study suggested that as a whole in China, the HBV-related diseases caused a heavy financial burden which was positively associated with disease severity. Although the intangible costs coincided with a high prevalence of discrimination against CHB patients in Chinese society, our study may serve as future reference for detailed exploration.
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Affiliation(s)
- S Zhang
- Division of Communicable Diseases, Shenzhen CDC, Shenzhen, China
| | - Q Ma
- Division of Communicable Diseases, Shenzhen CDC, Shenzhen, China.,Department of Social Medicine, Guangdong Pharmaceutical College, Guangzhou, China
| | - S Liang
- Division of Communicable Diseases, Shenzhen CDC, Shenzhen, China.,Department of Epidemiology and Biostatistics, Zhengzhou University School of Public Health, Zhengzhou, China
| | - H Xiao
- Division of Communicable Diseases, Shenzhen CDC, Shenzhen, China.,Department of Epidemiology and Biostatistics, Central South University School of Public Health, Changsha, China
| | - G Zhuang
- Department of Epidemiology and Biostatistics, Xi'an Jiaotong University School of Public Health, Xi'an, China
| | - Y Zou
- Department of Social Medicine, Guangdong Pharmaceutical College, Guangzhou, China
| | - H Tan
- Department of Epidemiology and Biostatistics, Central South University School of Public Health, Changsha, China
| | - J Liu
- Department of Gastrointestinal Disease, First Hospital of Shanxi Medical University, Taiyuan, China
| | - Y Zhang
- Department of Epidemiology and Biostatistics, Ningxia Medical University School of Public Health, Yinchuan, China
| | - L Zhang
- Institute of Immunization, Shandong CDC, Jinan, China
| | - X Feng
- Department of Preventive Medicine, Changzhi Medical College, Changzhi, China
| | - L Xue
- University at Buffalo School of Medicine, Buffalo, NY, USA
| | - D Hu
- Department of Epidemiology and Biostatistics, Zhengzhou University School of Public Health, Zhengzhou, China
| | - F Cui
- National Immunization Program, China CDC, Beijing, China
| | - X Liang
- National Immunization Program, China CDC, Beijing, China
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25
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Liu LJ, Yu KX, Zhang M, Zhuang G, Li X, Yuan T, Rao B, Zhao Q. Measurement of toroidal vessel eddy current during plasma disruption on J-TEXT. Rev Sci Instrum 2016; 87:013501. [PMID: 26827315 DOI: 10.1063/1.4939035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this paper, we have employed a thin, printed circuit board eddy current array in order to determine the radial distribution of the azimuthal component of the eddy current density at the surface of a steel plate. The eddy current in the steel plate can be calculated by analytical methods under the simplifying assumptions that the steel plate is infinitely large and the exciting current is of uniform distribution. The measurement on the steel plate shows that this method has high spatial resolution. Then, we extended this methodology to a toroidal geometry with the objective of determining the poloidal distribution of the toroidal component of the eddy current density associated with plasma disruption in a fusion reactor called J-TEXT. The preliminary measured result is consistent with the analysis and calculation results on the J-TEXT vacuum vessel.
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Affiliation(s)
- L J Liu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - K X Yu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - M Zhang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - X Li
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - T Yuan
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - B Rao
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Q Zhao
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
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26
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Abstract
With an increase of polarity and surfactant loading, the dispersibility of ACOMt in organic solvents increased.
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Affiliation(s)
- Jinlong Sun
- School of Materials Science and Technology
- China University of Geosciences
- Beijing
- PR China
| | - Guanzheng Zhuang
- School of Materials Science and Technology
- China University of Geosciences
- Beijing
- PR China
| | - Sanqin Wu
- School of Materials Science and Technology
- China University of Geosciences
- Beijing
- PR China
| | - Zepeng Zhang
- School of Materials Science and Technology
- China University of Geosciences
- Beijing
- PR China
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27
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Liu L, Rao B, Zhang M, Yu K, Zhuang G. Analysis of eddy currents in the two-half isolated vacuum vessel of an iron core tokamak. Fusion Engineering and Design 2015. [DOI: 10.1016/j.fusengdes.2015.10.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Pan M, Zhang M, Li T, Zheng W, Zhao Q, Rao B, Zhuang G. Wide-band optical coupling isolation amplifier for the Joint TEXT tokamak. Fusion Engineering and Design 2015. [DOI: 10.1016/j.fusengdes.2015.06.122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Xiao JS, Yang ZJ, Liu MH, Zhuang G, Pan XM, Zhang C, Wang ZJ. A Supersonic Molecular Beam Injection System on the J-TEXT Tokamak. J Fusion Energ 2015. [DOI: 10.1007/s10894-015-9918-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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30
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Chen W, Zhuang G, Gao L, Gentle KW, Chen J, Shi P, Liu Y, Li Q, Wang ZJ. Density modulation experiment to determine transport coefficients on Joint-TEXT Tokamak. Rev Sci Instrum 2015; 86:023507. [PMID: 25725842 DOI: 10.1063/1.4906075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Density modulation experiments have been conducted on Joint-TEXT (J-TEXT) Tokamak Ohmic discharge to investigate particle transport based on a model with constant diffusion plus inward convection. Like the HCN interferometer, the newly developed three-wave polarimeter-interferometer system (POLARIS) is used to measure the perturbed density. The comparison of results between the HCN interferometer and POLARIS is given. The consistent results indicate the validity of the analysis scheme. At lower densities, the typical particle confinement time τp is found to increase with electron density, while it saturates at higher densities.
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Affiliation(s)
- W Chen
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronics Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronics Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - L Gao
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronics Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - K W Gentle
- Institute of Fusion Studies, University of Texas at Austin, Austin, Texas 78712, USA
| | - J Chen
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronics Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - P Shi
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronics Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Y Liu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronics Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Q Li
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronics Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Z J Wang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronics Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
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31
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Yan W, Chen ZY, Jin W, Huang DW, Ding YH, Li JC, Zhang XQ, Lee SG, Shi YJ, Zhuang G. Wavelength calibration of x-ray imaging crystal spectrometer on Joint Texas Experimental Tokamak. Rev Sci Instrum 2014; 85:11E416. [PMID: 25430323 DOI: 10.1063/1.4891058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The wavelength calibration of x-ray imaging crystal spectrometer is a key issue for the measurements of plasma rotation. For the lack of available standard radiation source near 3.95 Å and there is no other diagnostics to measure the core rotation for inter-calibration, an indirect method by using tokamak plasma itself has been applied on joint Texas experimental tokamak. It is found that the core toroidal rotation velocity is not zero during locked mode phase. This is consistent with the observation of small oscillations on soft x-ray signals and electron cyclotron emission during locked-mode phase.
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Affiliation(s)
- W Yan
- School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Z Y Chen
- School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - W Jin
- School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - D W Huang
- School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Y H Ding
- School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - J C Li
- School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - X Q Zhang
- School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - S G Lee
- National Fusion Research Institute, Daejeon 305-333, South Korea
| | - Y J Shi
- National Fusion Research Institute, Daejeon 305-333, South Korea
| | - G Zhuang
- School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
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32
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Chi Y, Zhuang G, Cheng ZF, Hou SY, Cheng C, Li Z, Wang JR, Wang ZJ. Design of charge exchange recombination spectroscopy for the joint Texas experimental tokamak. Rev Sci Instrum 2014; 85:11E421. [PMID: 25430328 DOI: 10.1063/1.4891705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The old diagnostic neutral beam injector first operated at the University of Texas at Austin is ready for rejoining the joint Texas experimental tokamak (J-TEXT). A new set of high voltage power supplies has been equipped and there is no limitation for beam modulation or beam pulse duration henceforth. Based on the spectra of fully striped impurity ions induced by the diagnostic beam the design work for toroidal charge exchange recombination spectroscopy (CXRS) system is presented. The 529 nm carbon VI (n = 8 - 7 transition) line seems to be the best choice for ion temperature and plasma rotation measurements and the considered hardware is listed. The design work of the toroidal CXRS system is guided by essential simulation of expected spectral results under the J-TEXT tokamak operation conditions.
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Affiliation(s)
- Y Chi
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z F Cheng
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - S Y Hou
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - C Cheng
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z Li
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - J R Wang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z J Wang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
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33
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Huang DW, Chen ZY, Luo YH, Tong RH, Yan W, Jin W, Zhuang G. Hard X-ray spatial array diagnostics on Joint Texas Experimental Tokamak. Rev Sci Instrum 2014; 85:11D845. [PMID: 25430258 DOI: 10.1063/1.4891709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A spatially distributed hard X-ray detection array has been developed to diagnose the loss of runaway electron with toroidal and poloidal resolution. The hard X-ray radiation in the energy ranges of 0.3-1 MeV resulted from runaway electrons can be measured. The detection array consists of 12 CdTe detectors which are arranged surrounding the tokamak. It is found that most runaway electrons which transport to plasma boundary tend to loss on limiters. The application of electrode biasing probe resulted in enhancement of local runaway loss. Resonant magnetic perturbations enhanced the runaway electrons diffusion and showed an asymmetric poloidal loss rate.
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Affiliation(s)
- D W Huang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Z Y Chen
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Y H Luo
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - R H Tong
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - W Yan
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - W Jin
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
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34
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Cheng ZF, Luo J, Wang ZJ, Zhang ZP, Zhang XL, Hou SY, Cheng C, Li Z, Zhuang G. Edge impurity rotation profile measurement by using high-resolution ultraviolet/visible spectrometer on J-TEXT. Rev Sci Instrum 2014; 85:11E423. [PMID: 25430330 DOI: 10.1063/1.4891927] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
An upgrade of the edge rotation diagnostic system is achieved by increasing the number of viewing channels to 17 on J-TEXT tokamak. With the upgrade, the spatial resolution reaches 1 cm. The bulk plasma is used as the calibration light source. And the toroidal velocity profile of C V (carbon V) at edge region is obtained by using a spatial deconvolution technique. The valid measurement region is at ρ = 0.6-0.9, corresponding to the emitting region of C V. The preliminary experimental results express that the velocity of plasma may have a zero point near ρ = 0.85.
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Affiliation(s)
- Z F Cheng
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - J Luo
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z J Wang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z P Zhang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - X L Zhang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - S Y Hou
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - C Cheng
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z Li
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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35
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Luo J, Zhuang G, Cheng ZF, Zhang XL, Hou SY, Cheng C. Improvement of the edge rotation diagnostic spectrum analysis via simulation. Rev Sci Instrum 2014; 85:11E427. [PMID: 25430334 DOI: 10.1063/1.4892898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The edge rotation diagnostic (ERD) system has been developed on the Joint Texas Experimental Tokamak to measure the edge toroidal rotation velocity by observing the shifted wavelength of carbon V (C V 227.09 nm). Since the measured spectrum is an integrated result along the viewing line from the plasma core to the edge, a method via simulation has been developed to analyze the ERD spectrum. With the necessary parameters such as C V radiation profile and the ion temperature profile, a local rotation profile at the normalized minor radius of 0.5-1 is obtained.
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Affiliation(s)
- J Luo
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z F Cheng
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - X L Zhang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - S Y Hou
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - C Cheng
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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36
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Zhang XL, Cheng ZF, Hou SY, Zhuang G, Luo J. Upgrade of absolute extreme ultraviolet diagnostic on J-TEXT. Rev Sci Instrum 2014; 85:11E420. [PMID: 25430327 DOI: 10.1063/1.4891159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The absolute extreme ultraviolet (AXUV) diagnostic system is used for radiation observation on J-TEXT tokamak [J. Zhang, G. Zhuang, Z. J. Wang, Y. H. Ding, X. Q. Zhang, and Y. J. Tang, Rev. Sci. Instrum. 81, 073509 (2010)]. The upgrade of the AXUV system is aimed to improve the spatial resolution and provide a three-dimensional image on J-TEXT. The new system consists of 12 AXUV arrays (4 AXUV16ELG arrays, 8 AXUV20ELG arrays). The spatial resolution in the cross-section is 21 mm for the AXUV16ELG arrays and 17 mm for the AXUV20ELG arrays. The pre-amplifier is also upgraded for a higher signal to noise ratio. By upgrading the AXUV imaging system, a more accurate observation on the radiation information is obtained.
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Affiliation(s)
- X L Zhang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z F Cheng
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - S Y Hou
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - J Luo
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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37
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Chen J, Zhuang G, Li Q, Liu Y, Gao L, Zhou YN, Jian X, Xiong CY, Wang ZJ, Brower DL, Ding WX. High resolution polarimeter-interferometer system for fast equilibrium dynamics and MHD instability studies on Joint-TEXT tokamak (invited). Rev Sci Instrum 2014; 85:11D303. [PMID: 25430163 DOI: 10.1063/1.4891603] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A high-performance Faraday-effect polarimeter-interferometer system has been developed for the J-TEXT tokamak. This system has time response up to 1 μs, phase resolution < 0.1° and minimum spatial resolution ∼15 mm. High resolution permits investigation of fast equilibrium dynamics as well as magnetic and density perturbations associated with intrinsic Magneto-Hydro-Dynamic (MHD) instabilities and external coil-induced Resonant Magnetic Perturbations (RMP). The 3-wave technique, in which the line-integrated Faraday angle and electron density are measured simultaneously by three laser beams with specific polarizations and frequency offsets, is used. In order to achieve optimum resolution, three frequency-stabilized HCOOH lasers (694 GHz, >35 mW per cavity) and sensitive Planar Schottky Diode mixers are used, providing stable intermediate-frequency signals (0.5-3 MHz) with S/N > 50. The collinear R- and L-wave probe beams, which propagate through the plasma poloidal cross section (a = 0.25-0.27 m) vertically, are expanded using parabolic mirrors to cover the entire plasma column. Sources of systematic errors, e.g., stemming from mechanical vibration, beam non-collinearity, and beam polarization distortion are individually examined and minimized to ensure measurement accuracy. Simultaneous density and Faraday measurements have been successfully achieved for 14 chords. Based on measurements, temporal evolution of safety factor profile, current density profile, and electron density profile are resolved. Core magnetic and density perturbations associated with MHD tearing instabilities are clearly detected. Effects of non-axisymmetric 3D RMP in ohmically heated plasmas are directly observed by polarimetry for the first time.
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Affiliation(s)
- J Chen
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Q Li
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Y Liu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - L Gao
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Y N Zhou
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - X Jian
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - C Y Xiong
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z J Wang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - D L Brower
- Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095, USA
| | - W X Ding
- Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095, USA
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38
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Yi B, Rao B, Ding YH, Li M, Xu HY, Zhang M, Zhuang G, Pan Y. A novel method to optimize the mode spectrum of the dynamic resonant magnetic perturbation on the J-TEXT tokamak. Rev Sci Instrum 2014; 85:113501. [PMID: 25430110 DOI: 10.1063/1.4901092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The dynamic resonant magnetic perturbation (DRMP) system has been developed for the J-TEXT tokamak to study the interaction between the rotating perturbation magnetic field and the plasma. When the DRMP coils are energized by two phase sinusoidal currents with the same frequency, a 2/1 rotating resonant magnetic perturbation component will be generated. But at the same time, a small perturbation component rotating in the opposite direction is also produced because of the control error of the currents. This small component has bad influence on the experiment investigations. Actually, the mode spectrum of the generated DRMP can be optimized with an accurate control of phase difference between the two currents. In this paper, a new phase control method based on a novel all-digital phase-locked loop (ADPLL) is proposed. The proposed method features accurate phase control and flexible phase adjustment. Modeling and analysis of the proposed ADPLL is presented to guide the design of the parameters of the phase controller in order to obtain a better performance. Testing results verify the effectiveness of the ADPLL and validity of the method applying to the DRMP system.
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Affiliation(s)
- B Yi
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronics Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - B Rao
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronics Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Y H Ding
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronics Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - M Li
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronics Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - H Y Xu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronics Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - M Zhang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronics Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronics Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Y Pan
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronics Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
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39
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Zhu Y, Zhao Z, Liu WD, Xie J, Hu X, Muscatello CM, Domier CW, Luhmann NC, Chen M, Ren X, Tobias BJ, Zhuang G, Yang Z. Optics design for J-TEXT ECE imaging with field curvature adjustment lens. Rev Sci Instrum 2014; 85:11D854. [PMID: 25430267 DOI: 10.1063/1.4893352] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Significant progress has been made in the imaging and visualization of magnetohydrodynamic and microturbulence phenomena in magnetic fusion plasmas. Of particular importance has been microwave electron cyclotron emission imaging (ECEI) for imaging Te fluctuations. Key to the success of ECEI is a large Gaussian optics system constituting a major portion of the focusing of the microwave radiation from the plasma to the detector array. Both the spatial resolution and observation range are dependent upon the imaging optics system performance. In particular, it is critical that the field curvature on the image plane is reduced to decrease crosstalk between vertical channels. The receiver optics systems for two ECEI on the J-TEXT device have been designed to ameliorate these problems and provide good performance with additional field curvature adjustment lenses with a meniscus shape to correct the aberrations from several spherical surfaces.
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Affiliation(s)
- Y Zhu
- School of Physics, University of Science and Technology of China, Anhui 230026, People's Republic of China
| | - Z Zhao
- School of Physics, University of Science and Technology of China, Anhui 230026, People's Republic of China
| | - W D Liu
- School of Physics, University of Science and Technology of China, Anhui 230026, People's Republic of China
| | - J Xie
- School of Physics, University of Science and Technology of China, Anhui 230026, People's Republic of China
| | - X Hu
- University of California at Davis, Davis, California 95616, USA
| | - C M Muscatello
- University of California at Davis, Davis, California 95616, USA
| | - C W Domier
- University of California at Davis, Davis, California 95616, USA
| | - N C Luhmann
- University of California at Davis, Davis, California 95616, USA
| | - M Chen
- University of California at Davis, Davis, California 95616, USA
| | - X Ren
- University of California at Davis, Davis, California 95616, USA
| | - B J Tobias
- Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA
| | - G Zhuang
- College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Z Yang
- College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
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40
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Chen J, Zhuang G, Jian X, Li Q, Liu Y, Gao L, Wang ZJ. Equilibrium reconstruction based on core magnetic measurement and its applications on equilibrium transition in Joint-TEXT tokamak. Rev Sci Instrum 2014; 85:103501. [PMID: 25362387 DOI: 10.1063/1.4896476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Evaluation and reconstruction of plasma equilibrium, especially to resolve the safety factor profile, is imperative for advanced tokamak operation and physics study. Based on core magnetic measurement by the high resolution laser polarimeter-interferometer system (POLARIS), the equilibrium of Joint-TEXT (J-TEXT) plasma is reconstructed and profiles of safety factor, current density, and electron density are, therefore, obtained with high accuracy and temporal resolution. The equilibrium reconstruction procedure determines the equilibrium flux surfaces essentially from the data of POLARIS. Refraction of laser probe beam, a major error source of the reconstruction, has been considered and corrected, which leads to improvement of accuracy more than 10%. The error of reconstruction has been systematically assessed with consideration of realistic diagnostic performance and scrape-off layer region of plasma, and its accuracy has been verified. Fast equilibrium transitions both within a single sawtooth cycle and during the penetration of resonant magnetic perturbation have been investigated.
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Affiliation(s)
- J Chen
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - X Jian
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Q Li
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Y Liu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - L Gao
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z J Wang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
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41
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Luo YH, Chen ZY, Tang Y, Wang SY, Ba WG, Wei YN, Ma TK, Huang DW, Tong RH, Yan W, Geng P, Shao J, Zhuang G. Designing of the massive gas injection valve for the joint Texas experimental tokamak. Rev Sci Instrum 2014; 85:083504. [PMID: 25173266 DOI: 10.1063/1.4891864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In order to mitigate the negative effects of the plasma disruption a massive gas injection (MGI) valve is designed for the joint Texas experimental tokamak. The MGI valve is based on the eddy-current repulsion mechanism. It has a fueling volume of 30 ml. The piston of the MGI valve is made by non-ferromagnetic material, so it can be installed close to the vacuum vessel which has a strong toroidal magnetic field. A diode is use to prevent current oscillation in the discharge circuit. The drive coil of the valve is installed outside the gas chamber. The opening characteristics and the gas flow of the MGI valve have been tested by a 60 l vacuum chamber. Owing to the large electromagnetic force the reaction time of the valve is shorter than 0.3 ms. Duration for the opening of the MGI valve is in the order of 10 ms.
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Affiliation(s)
- Y H Luo
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z Y Chen
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Y Tang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - S Y Wang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - W G Ba
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Y N Wei
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - T K Ma
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - D W Huang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - R H Tong
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - W Yan
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - P Geng
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - J Shao
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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42
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Yin X, Zheng W, Zhang M, Zhang J, Zhuang G, Ding T. A modularized operator interface framework for Tokamak based on MVC design pattern. Fusion Engineering and Design 2014. [DOI: 10.1016/j.fusengdes.2014.03.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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43
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Zhu TZ, Chen ZP, Sun Y, Nan JY, Liu H, Zhuang G, Wang ZJ. The construction of an electrode biasing system for driving plasma rotation in J-TEXT tokamak. Rev Sci Instrum 2014; 85:053504. [PMID: 24880366 DOI: 10.1063/1.4873320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A newly designed electrode biasing system has been constructed for driving plasma rotation in J-TEXT tokamak. To reduce the influence to the plasma, the system contains a pneumatic driving system so that it can reciprocate in a single discharge, with a stroke of about 5 cm in 100 ms. The power supply of the system can provide stable and adjustable dc voltage in the range of 0-700 V, with adjustable duration of 10-200 ms; its instantaneous power output can reach up to more than 200 kW. In addition, the power supply can also provide a multi-cycle voltage waveform, with adjustable pulse width and voltage amplitude. When applying a positive bias to the plasma, both an improvement of plasma confinement and the speed-up of plasma-edge toroidal rotation in the same direction of plasma current are observed in the experiments.
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Affiliation(s)
- T Z Zhu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Z P Chen
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Yue Sun
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - J Y Nan
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - H Liu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Z J Wang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
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44
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Affiliation(s)
- H. Tan
- Huazhong University of Science and Technology, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Wuhan 430074, China
- Huazhong University of Science and Technology, School of Electrical and Electronic Engineering, Wuhan 430074, China
| | - M. Zhang
- Huazhong University of Science and Technology, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Wuhan 430074, China
- Huazhong University of Science and Technology, School of Electrical and Electronic Engineering, Wuhan 430074, China
| | - B. Rao
- Huazhong University of Science and Technology, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Wuhan 430074, China
- Huazhong University of Science and Technology, School of Electrical and Electronic Engineering, Wuhan 430074, China
| | - Y. Yang
- Huazhong University of Science and Technology, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Wuhan 430074, China
| | - Y. H. Ding
- Huazhong University of Science and Technology, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Wuhan 430074, China
- Huazhong University of Science and Technology, School of Electrical and Electronic Engineering, Wuhan 430074, China
| | - G. Zhuang
- Huazhong University of Science and Technology, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Wuhan 430074, China
- Huazhong University of Science and Technology, School of Electrical and Electronic Engineering, Wuhan 430074, China
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45
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Zhang J, Zhang M, Zheng W, Zhuang G, Ding T. Design and application of an EPICS compatible slow plant system controller in J-TEXT tokamak. Fusion Engineering and Design 2014. [DOI: 10.1016/j.fusengdes.2014.04.052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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46
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Zheng W, Liu R, Zhang M, Zhuang G, Yuan T. Design of FPGA based high-speed data acquisition and real-time data processing system on J-TEXT tokamak. Fusion Engineering and Design 2014. [DOI: 10.1016/j.fusengdes.2014.01.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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47
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Rao B, Wang G, Ding Y, Yu K, Li Q, Wang N, Yi B, Nan J, Cen Y, Hu Q, Jin W, Li J, Jin H, Zhang M, Zhuang G. Introduction to resonant magnetic perturbation coils of the J-TEXT Tokamak. Fusion Engineering and Design 2014. [DOI: 10.1016/j.fusengdes.2014.03.038] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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48
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Ding YH, Wang NC, Rao B, Jin XS, Chen ZP, Hu QM, Jin H, Jin W, Li JC, Xie SJ, Yi B, Zhuang G, Pan Y. Analytical compensation of axisymmetric equilibrium fluxes picked up by locked mode detectors in tokamaks. Rev Sci Instrum 2014; 85:043502. [PMID: 24784602 DOI: 10.1063/1.4870416] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In the detection of locked modes using saddle loops, the problem of how to remove the axisymmetric equilibrium flux picked up by the loops has still to be solved. The problem becomes more difficult when there are conductive structures located near the saddle loops. In this paper, we present an analytical model based on lumped eddy current circuits and use it to interpret the measured equilibrium flux and the corresponding eddy current fluxes. Using this model, precise compensation for fluxes induced by the horizontal field coils and the toroidal field coils, with relative errors of less than 1%, has been realized for the saddle loops in the Joint Texas Experimental Tokamak. This paper also presents a new method to compensate for the detection of equilibrium flux by the locked mode detector.
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Affiliation(s)
- Y H Ding
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - N C Wang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - B Rao
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - X S Jin
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z P Chen
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Q M Hu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - H Jin
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - W Jin
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - J C Li
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - S J Xie
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - B Yi
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Y Pan
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, and School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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49
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Jin W, Chen ZY, Huang DW, Li QL, Yan W, Luo YH, Lee SG, Shi YJ, Huang YH, Tong RH, Yang ZJ, Rao B, Ding YH, Zhuang G. Upgraded high time-resolved x-ray imaging crystal spectroscopy system for J-TEXT ohmic plasmas. Rev Sci Instrum 2014; 85:023509. [PMID: 24593363 DOI: 10.1063/1.4864147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This paper presents the upgraded x-ray imaging crystal spectrometer (XICS) system on Joint Texas Experimental Tokamak (J-TEXT) tokamak and the latest experimental results obtained in last campaign. With 500 Hz frame rate of the new Pilatus detector and 5 cm × 10 cm spherically bent crystal, the XICS system can provide core electron temperature (Te), core ion temperature (Ti), and plasma toroidal rotation (VΦ) with a maximum temporal resolution of 2 ms for J-TEXT pure ohmic plasmas. These parameters with high temporal resolution are very useful in tokamak plasma research, especially for rapidly changed physical processes. The experimental results from the upgraded XICS system are presented.
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Affiliation(s)
- W Jin
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Z Y Chen
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - D W Huang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Q L Li
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - W Yan
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Y H Luo
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - S G Lee
- National Fusion Research Institute, Daejeon 305-333, South Korea
| | - Y J Shi
- National Fusion Research Institute, Daejeon 305-333, South Korea
| | - Y H Huang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - R H Tong
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Z J Yang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - B Rao
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Y H Ding
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - G Zhuang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
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50
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Xia D, Huang M, Song S, Chen G, Wang J, Zhou J, Rao J, Zhuang G. Coupling of electron cyclotron waves to the desired mode in plasma of HL-2A tokamak. Fusion Engineering and Design 2013. [DOI: 10.1016/j.fusengdes.2013.07.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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