Preliminary results of the 105 GHz collective Thomson scattering system on HL-2A

被引：0
|
作者：
Deng, W. C. [1 ]
Shi, Z. B. [1 ]
Shi, P. W. [1 ]
Yang, Z. C. [1 ]
Chen, W. [1 ]
Huang, M. [1 ]
Zhang, F. [1 ]
Yu, X. [1 ]
Jiang, M. [1 ]
Wen, J. [1 ]
Liang, A. S. [1 ]
Shen, Y. Q. [1 ]
Zhou, Y. [1 ]
Tong, R. H. [1 ]
Zhong, W. L. [1 ]
机构：
[1] Southwestern Inst Phys, POB 432, Chengdu 610041, Peoples R China
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2023年 / 94卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Collective thomson scatterings - Experimental campaign - Fast ions - Modulation characteristics - Neutral beam injection - Scattering channels - Scattering signals - Scattering systems - Synchronous modulation - Thomson scattering diagnostics;
D O I：
10.1063/5.0150123
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A 105 GHz collective Thomson scattering (CTS) diagnostic has been successfully developed for fast-ion measurements on the HL-2A tokamak, and it has been deployed during an experimental campaign. Enhanced signals exhibiting synchronous modulation characteristics have been observed across all CTS channels upon the launch of a modulated probe wave. Results show that the intensity of the CTS signal increases with Neutral Beam Injection (NBI) power and is proportional to neutron count, indicating that the scattering signal contains a contribution from fast ions. Compared with the signal without NBI, the enhanced scattering spectrum due to NBI is slightly wider than the predicted fast ion range. Such broadening might be attributed to the heating effects of the gyrotron.
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页数：6
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