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Yuan BD, Yu Y, He RC, Yang XY, Xu TC, Yuan JB, Hong RJ, Nie L, Ke R, Long T, Wang ZH, Xiao CJ, Xu M, Li JQ, Ye MY, Duan XR. Development of a multi-color gas puff imaging diagnostic on HL-2A tokamak. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:073505. [PMID: 32752858 DOI: 10.1063/5.0005545] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 07/02/2020] [Indexed: 06/11/2023]
Abstract
A Multi-Color (MC) gas puff imaging diagnostic has been developed on HL-2A tokamak. This diagnostic can simultaneously measure two-dimensional (2D, radial, and poloidal) electron density and temperature distributions with a good spatial resolution of 2.5 × 2.5 mm2 and a temporal resolution of about 100 µs at best in edge plasmas. The 2D electron density and temperature distributions are inferred from the ratios of intensities of three different neutral helium emission lines; therefore, it is also referred to as helium beam probe or beam emission spectroscopy on thermal helium. A compact light splitter is used to split the inlet visible emission beam into four channels, and the specific neutral helium lines of the wavelengths λ1 = 587.6 nm, λ2 = 667.8 nm, λ3 = 706.5 nm, and λ4 = 728.1 nm are measured, respectively. This MC diagnostic has been experimentally tested and calibrated on a linear magnetic confinement device Peking University Plasma Test device, and the measured 2D electron density and temperature distributions are compared with the Langmuir probe measurements.
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Affiliation(s)
- B D Yuan
- School of Physics, University of Science and Technology of China, Hefei 230026, China
| | - Y Yu
- School of Physics, University of Science and Technology of China, Hefei 230026, China
| | - R C He
- School of Physics, Peking University, Beijing 100871, China
| | - X Y Yang
- School of Physics, Peking University, Beijing 100871, China
| | - T C Xu
- School of Physics, Peking University, Beijing 100871, China
| | - J B Yuan
- Southwestern Institute of Physics, Chengdu 610041, China
| | - R J Hong
- Physics and Astronomy Department, University of California, Los Angeles, California 90095, USA
| | - L Nie
- Southwestern Institute of Physics, Chengdu 610041, China
| | - R Ke
- Southwestern Institute of Physics, Chengdu 610041, China
| | - T Long
- Southwestern Institute of Physics, Chengdu 610041, China
| | - Z H Wang
- Southwestern Institute of Physics, Chengdu 610041, China
| | - C J Xiao
- School of Physics, Peking University, Beijing 100871, China
| | - M Xu
- Southwestern Institute of Physics, Chengdu 610041, China
| | - J Q Li
- Southwestern Institute of Physics, Chengdu 610041, China
| | - M Y Ye
- School of Physics, University of Science and Technology of China, Hefei 230026, China
| | - X R Duan
- Southwestern Institute of Physics, Chengdu 610041, China
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Wu Y, McKee G, Yu Y, Ke R, Yan Z, Jaehnig K, Xu M, Kriete M, Morton L, Qin X, Nie L, Wu T, Sun A, Lan T, Yuan B, Liu H, Gong S, Long T, Duan X, Ye M. Development of a 32-channel Beam Emission Spectroscopy diagnostic based on Neutral Beam Injection on HL-2A tokamak. FUSION ENGINEERING AND DESIGN 2020. [DOI: 10.1016/j.fusengdes.2020.111734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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