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Balazs P, Asztalos O, Anda G, Vecsei M, Zoletnik S, Kumar S, Pokol G. Special behavior of alkali beam emission spectroscopy in low-ion-temperature plasma. FUSION ENGINEERING AND DESIGN 2023. [DOI: 10.1016/j.fusengdes.2023.113650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Yu Y, Xu M, Duan XR, Nie L, Ke R, Yuan BD, Gong SB, Lan T, Wang ZH, Long T, Wu YF, Yuan JB, Wu T, Chen YH, Liu H, Zhou YX, Wang HJ, Zhong WL, Shi ZB, Li JQ, Liu Y, Hao GZ, Chen W, Chen Q, Sun AP, Ye MY. Recent Progress of Optical and Spectroscopic Diagnostics for Turbulence on the HL-2A tokamak. JOURNAL OF FUSION ENERGY 2021. [DOI: 10.1007/s10894-021-00302-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Yu Y, Wang HJ, Chen Z, Chen R, Lan T, Li YY, Zang Q, Zhang J, Zhao HL, Mao SF, Lyu B, Ye MY, Wan BN. Influence of neutral beam attenuation on beam emission spectroscopy and charge exchange recombination spectroscopy. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2018; 89:073503. [PMID: 30068091 DOI: 10.1063/1.5028205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 06/23/2018] [Indexed: 06/08/2023]
Abstract
Neutral beam attenuation is simulated by means of consulting the ADAS (Atomic Data and Analysis Structure) database based on experimentally diagnosed radial plasma density and electron temperature profiles on the Experimental Advanced Superconducting Tokamak (EAST). Two-dimensional distributions of beam emission and charge exchange recombination photon flux are simulated, taking neutral beam attenuation into account, together with comparison with experimental results of Beam Emission Spectroscopy (BES) and Charge eXchange Recombination Spectroscopy (CXRS). A photon number which is over 1014 promises a sufficient photon flux for typical detectors of BES, CXRS, and UltraFast-CXRS (UF-CXRS) diagnostics. Evidence shows that the ADAS database overvalues neutral beam injection effective stopping coefficient on the EAST tokamak. The joint diagnostic of BES and UF-CXRS which is under development to measure plasma pressure with a high temporal resolution of 1 μs will have strong signals in a radial range of 0.6 < ρ < 0.8. The steep gradients of plasma density and C6+ density at ρ ∼ 1 bring great difficulty to edge plasma investigation by this joint diagnostic.
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Affiliation(s)
- Y Yu
- School of Physics, University of Science and Technology of China, Hefei 230026, China
| | - H J Wang
- School of Physics, University of Science and Technology of China, Hefei 230026, China
| | - Z Chen
- School of Physics, University of Science and Technology of China, Hefei 230026, China
| | - R Chen
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - T Lan
- School of Physics, University of Science and Technology of China, Hefei 230026, China
| | - Y Y Li
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - Q Zang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - J Zhang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - H L Zhao
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - S F Mao
- School of Physics, University of Science and Technology of China, Hefei 230026, China
| | - B Lyu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - M Y Ye
- School of Physics, University of Science and Technology of China, Hefei 230026, China
| | - B N Wan
- School of Physics, University of Science and Technology of China, Hefei 230026, China
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