Optimization of the HCN interferometer on J-TEXT tokamak

被引：6
|
作者：
Shi, P. [1 ]
Gao, L. [1 ]
Xiong, C. Y. [1 ]
Liu, Y. [1 ]
Chen, J. [1 ]
Zhuang, G. [1 ]
机构：
[1] Huazhong Univ Sci & Technol, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Peoples R China
来源：
JOURNAL OF INSTRUMENTATION | 2015年 / 10卷
关键词：
Nuclear instruments and methods for hot plasma diagnostics; Plasma diagnostics - interferometry; spectroscopy and imaging;
D O I：
10.1088/1748-0221/10/12/C12004
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Recently, the HCN interferometer on J-TEXT has been optimized in many aspects. Firstly, the output power of laser source is more stable after using a new designed movable mirror frame and upgrading the oil thermostatic system. Secondly, the electromagnetic interferences have been eliminated by designing a shielding system. Additionally, the signal-to-noise ratio of intermediate frequency (IF) signal has been increased more than five times by improving the detector circuit. The density resolution has been increased from 1 x 10(18) m(3) to 2 x 10(17) m(3) and the sawtooth oscillation has also been measured by the HCN interferometer on J-TEXT after optimizations.
引用
收藏
页数：8
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