The 7-channel FIR HCN interferometer on J-TEXT tokamak
The 7-channel FIR HCN interferometer on J-TEXT tokamak
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J-TEXT 托卡马克上的 7 通道 FIR HCN 干涉仪
DOI：
10.1088/1748-0221/7/01/c01109
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发表时间：
2011-11
影响因子：
1.3
通讯作者：
G.Zhuang
中科院分区：
文献类型：
--
作者：
W Chen;L.Gao;J.Chen;Q.Li;Z.J.Wang;G.Zhuang
建立了七通道远红外氰化氢（HCN）激光干涉仪，旨在为 J-TEXT 实验场景提供线积分等离子体密度。激光源采用腔长3.4 m的连续波辉光放电HCN激光器，波长为337 μm，输出功率高达100 mW。该系统配置为马赫-曾德尔型干涉仪。相位调制是通过旋转光栅实现的，调制频率为 10 kHz，对应于 0.1 ms 的时间分辨率。拍频信号由 TGS 检测器检测。等离子体引起的相移由相位灵敏度为0.06条纹的比较器导出。详细介绍了J-TEXT干涉仪测量的实验结果。此外，还给出了通过传统方法获得的反演电子密度分布。二甲基硅油的运动粘度和振动控制是系统性能的关键问题。给出了不同硅油运动粘度下的激光功率稳定性。论文中显示了减振测量结果的明显改善。
A seven-channel far-infrared hydrogen cyanide (HCN) laser interferometer has been established aiming to provide the line integrated plasma density for the J-TEXT experimental scenarios. A continuous wave glow discharge HCN laser designed with a cavity length 3.4 m is used as the laser source with a wavelength of 337 μm and an output power up to 100 mW. The system is configured as a Mach-Zehnder type interferometer. Phase modulation is achieved by a rotating grating, with a modulation frequency of 10 kHz which corresponds to the temporal resolution of 0.1 ms. The beat signal is detected by TGS detector. The phase shift induced by the plasma is derived by the comparator with a phase sensitivity of 0.06 fringe. The experimental results measured by the J-TEXT interferometer are presented in details. In addition, the inversed electron density profile done by a conventional approach is also given. The kinematic viscosity of dimethyl silicone and vibration control is key issues for the system performance. The laser power stability under different kinematic viscosity of silicone oil is presented. A visible improvement of measured result on vibration reduction is shown in the paper.
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DOI：
10.1016/b978-0-12-147701-1.x5001-5
发表时间：
2016
期刊：
--
影响因子：
--
作者：
M. Schmid
通讯作者：
M. Schmid
影响因子：
2.4
作者：
P. Belland;D. Véron
通讯作者：
P. Belland;D. Véron
影响因子：
1.6
作者：
G. Hallock;M. L. Gartman;R. Castles;K. Chiang;A. S. Rahman
通讯作者：
G. Hallock;M. L. Gartman;R. Castles;K. Chiang;A. S. Rahman
影响因子：
--
作者：
MARCATILI, EAJ;SCHMELTZER, RA
通讯作者：
SCHMELTZER, RA
影响因子：
1.9
作者：
P. Belland;D. Véron;L. Whitbourn
通讯作者：
P. Belland;D. Véron;L. Whitbourn