Avalanche Phenomenon of Superthermal Electrons Measured by SDD with New SPHA during ECRH
YANG Jin-Wei1, ZHANG Yi-Po1, LIAO Min1, HU Li-Qun2, LI Xu1, SONG Xian-Ying1, LIN Shi-Yao2, LI Yong-Ge1, LUO Cui-Wen1, CHEN Liao-Yuan1, RAO Jun1, YANG Qing-Wei1
1Southwestern Institute of Physics, PO Box 432, Chengdu 6100412Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031
Avalanche Phenomenon of Superthermal Electrons Measured by SDD with New SPHA during ECRH
摘要Two high performance silicon drift detectors (SDD) are installed at the equatorial port with z=0 and z= -16.4cm on HL-2A tokamak, respectively. These SDDs combine with the new and non-conventional software pulse height analyser (SPHA) successfully developed more recently by us to measure the time evolution of soft x-rays spectra, the thermal and superthermal electron temperatures. The high-quality three-dimensional figure of time evolution for soft x-rays energy spectra is easily obtained by combination of a new SPHA and computer. Therefore, the measurement accuracies and the time resolutions of thermal and superthermal electron temperatures are also improved. The enhancement phenomenon of superthermal electron during electron cyclotron resonance heating (ECRH) can be explained by the combination of superthermal electron avalanche theory and experimental parameters.
Abstract：Two high performance silicon drift detectors (SDD) are installed at the equatorial port with z=0 and z= -16.4cm on HL-2A tokamak, respectively. These SDDs combine with the new and non-conventional software pulse height analyser (SPHA) successfully developed more recently by us to measure the time evolution of soft x-rays spectra, the thermal and superthermal electron temperatures. The high-quality three-dimensional figure of time evolution for soft x-rays energy spectra is easily obtained by combination of a new SPHA and computer. Therefore, the measurement accuracies and the time resolutions of thermal and superthermal electron temperatures are also improved. The enhancement phenomenon of superthermal electron during electron cyclotron resonance heating (ECRH) can be explained by the combination of superthermal electron avalanche theory and experimental parameters.
(Plasma diagnostic techniques and instrumentation)
引用本文:
YANG Jin-Wei;ZHANG Yi-Po;LIAO Min;HU Li-Qun;LI Xu;SONG Xian-Ying;LIN Shi-Yao;LI Yong-Ge;LUO Cui-Wen;CHEN Liao-Yuan;RAO Jun;YANG Qing-Wei. Avalanche Phenomenon of Superthermal Electrons Measured by SDD with New SPHA during ECRH[J]. 中国物理快报, 2008, 25(3): 1022-1025.
YANG Jin-Wei, ZHANG Yi-Po, LIAO Min, HU Li-Qun, LI Xu, SONG Xian-Ying, LIN Shi-Yao, LI Yong-Ge, LUO Cui-Wen, CHEN Liao-Yuan, RAO Jun, YANG Qing-Wei. Avalanche Phenomenon of Superthermal Electrons Measured by SDD with New SPHA during ECRH. Chin. Phys. Lett., 2008, 25(3): 1022-1025.
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2008, Vol. 25 
