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Salvatores M, Orsitto F, Carta M, Burgio N, Fabrizio V, Falconi L, Palomba M, Panza F. An approach to the experimental validation of the fission multiplying blanket of hybrid fusion fission systems. ANN NUCL ENERGY 2021. [DOI: 10.1016/j.anucene.2020.108055] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Bruschi A, Alessi E, Baiocchi B, Bin W, D’Arcangelo O, Fanale F, Figini L, Galperti C, Garavaglia S, Gittini G, Granucci G, Grosso G, Lubyako L, Mazzotta C, Mellera V, Moro A, Orsitto F, Pallotta F, Rocchi G, Tartari U, Tudisco O. Fast events detection with the CTS diagnostic on FTU and plans for improvement. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201714903017] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Bin W, Bruschi A, D'Arcangelo O, Grosso G, Lubiako L, Alessi E, Castaldo C, Centioli C, De Angeli M, Figini L, Galperti C, Garavaglia S, Granucci G, Lontano M, Magagnino S, Mellera V, Minelli D, Moro A, Muraro A, Nardone A, Orsitto F, Simonetto A, Tartari U. Advances in the FTU collective Thomson scattering system. Rev Sci Instrum 2016; 87:11E507. [PMID: 27910385 DOI: 10.1063/1.4955478] [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: 06/06/2023]
Abstract
The new collective Thomson scattering diagnostic installed on the Frascati Tokamak Upgrade device started its first operations in 2014. The ongoing experiments investigate the presence of signals synchronous with rotating tearing mode islands, possibly due to parametric decay processes, and phenomena affecting electron cyclotron beam absorption or scattering measurements. The radiometric system, diagnostic layout, and data acquisition system were improved accordingly. The present status and near-term developments of the diagnostic are presented.
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Affiliation(s)
- W Bin
- Istituto di Fisica del Plasma "P. Caldirola," Consiglio Nazionale delle Ricerche, Milano, Italy
| | - A Bruschi
- Istituto di Fisica del Plasma "P. Caldirola," Consiglio Nazionale delle Ricerche, Milano, Italy
| | | | - G Grosso
- Istituto di Fisica del Plasma "P. Caldirola," Consiglio Nazionale delle Ricerche, Milano, Italy
| | - L Lubiako
- Institute of Applied Physics of Russian Academy of Sciences, Nizhny Novgorod, Russia
| | - E Alessi
- Istituto di Fisica del Plasma "P. Caldirola," Consiglio Nazionale delle Ricerche, Milano, Italy
| | | | | | - M De Angeli
- Istituto di Fisica del Plasma "P. Caldirola," Consiglio Nazionale delle Ricerche, Milano, Italy
| | - L Figini
- Istituto di Fisica del Plasma "P. Caldirola," Consiglio Nazionale delle Ricerche, Milano, Italy
| | - C Galperti
- Swiss Plasma Center, Ecole Polytéchnique Fédérale de Lausanne, Lausanne, Switzerland
| | - S Garavaglia
- Istituto di Fisica del Plasma "P. Caldirola," Consiglio Nazionale delle Ricerche, Milano, Italy
| | - G Granucci
- Istituto di Fisica del Plasma "P. Caldirola," Consiglio Nazionale delle Ricerche, Milano, Italy
| | - M Lontano
- Istituto di Fisica del Plasma "P. Caldirola," Consiglio Nazionale delle Ricerche, Milano, Italy
| | | | - V Mellera
- Istituto di Fisica del Plasma "P. Caldirola," Consiglio Nazionale delle Ricerche, Milano, Italy
| | - D Minelli
- Istituto di Fisica del Plasma "P. Caldirola," Consiglio Nazionale delle Ricerche, Milano, Italy
| | - A Moro
- Istituto di Fisica del Plasma "P. Caldirola," Consiglio Nazionale delle Ricerche, Milano, Italy
| | - A Muraro
- Istituto di Fisica del Plasma "P. Caldirola," Consiglio Nazionale delle Ricerche, Milano, Italy
| | - A Nardone
- Istituto di Fisica del Plasma "P. Caldirola," Consiglio Nazionale delle Ricerche, Milano, Italy
| | - F Orsitto
- Consorzio CREATE, Università degli Studi di Napoli Federico II, Napoli, Italy
| | - A Simonetto
- Istituto di Fisica del Plasma "P. Caldirola," Consiglio Nazionale delle Ricerche, Milano, Italy
| | - U Tartari
- Istituto di Fisica del Plasma "P. Caldirola," Consiglio Nazionale delle Ricerche, Milano, Italy
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Bin W, Bruschi A, D’Arcangelo O, Grosso G, Lubiako L, Tartari U, Figini L, Garavaglia S, Grossetti G, Moro A, Orsitto F, Centioli C, Galperti C, Granucci G, Mellera V, Minelli D, Nardone A, Simonetto A, Vellucci M. The upgraded Collective Thomson Scattering diagnostics of FTU. Fusion Engineering and Design 2015. [DOI: 10.1016/j.fusengdes.2015.05.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Orsitto F, Brusadin A, Giovannozzi E, Santi D, Bartiromo R, Pizzolati P. Thomson-scattering diagnostic on the Frascati tokamak upgrade. Appl Opt 1995; 34:2712-2718. [PMID: 21052416 DOI: 10.1364/ao.34.002712] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The Frascati tokamak upgrade Thomson-scattering system is used for the measurement of electron-temperature and electron-density spatial profiles along the vertical diameter of the tokamak at 19 spatial points up to 10 times in a single plasma discharge, with a spatial resolution that ranges from 2 cm in the central region to 4 cm in the plasma edge. The radiation source is a Nd:YLF laser that operates at 1053 nm, with a divergence of 0.4 mrad full angle, and is capable of delivering a burst of 10 pulses with energies of 4.5 J/pulse; the interpulse time can be regulated from 20 to 100 ms. The scattered radiation is collected by two objectives: the first looks at the plasma center, and the second at the plasma edge. Bundles of optical fibers in the focal plane of the objectives carry the scattered light from the tokamak hall to a set of 19 interference-filter polychromators, whose transmission is 70%, and the rejection of the stray light at the laser wavelength is 1/10(7). The detectors are avalanche photodiodes ith a noise-equivalent power of the order of 10(-13) W/(Hz)(½) at 1053 nm. The spectral calibration of the polychromators is presented. The absolute calibration of the scattering system for the electron-density measurement has been carried out by the use of Raman scattering on hydrogen and deuterium. Examples of the results of the temporal evolution of T(e) and n(e) spatial profiles are presented for ohmic plasma heating, lower-hybrid current drive, and a pellet-injection experiment. The electron-temperature and electron-density profiles measured through Thomson scattering are compared with the temperatures measured through the use of electron-cyclotron emission and the density profiles obtained from the interferometer data.
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