The spectrometer of the high-resolution multiposition Thomson scattering diagnostic for TJ-II
The spectrometer of the high-resolution multiposition Thomson scattering diagnostic for TJ-II
复制标题
TJ-II型高分辨率多位汤姆逊散射诊断光谱仪
DOI：
10.1016/s0920-3796(03)00387-9
复制
发表时间：
2003
影响因子：
1.7
通讯作者：
K. McCarthy
中科院分区：
文献类型：
--
作者：
J. Herranz;F. Castejón;I. Pastor;K. McCarthy
一个高分辨率多位置汤姆逊散射系统结合了高精度和出色的空间分辨率，正在仿星器TJ-II上运行。本文介绍了它的诊断光谱仪。它的主要特点，这提供了TJ-Ⅱ汤姆逊散射诊断与高的空间和光谱分辨率，分别为2.2毫米和2.1纳米，本文描述。特别地，观察光学器件已经被设计为实现低像差和失真。检测器分支在短脉冲期间起作用，确保正确的光增强和与激光束的同步。这些属性使人们能够区分小规模的功能，出现在密度和温度分布在TJ-II等离子体，以及在温度和密度分布的陡峭梯度。所获得的结果表明该系统的特性的例子。
A high-resolution multi-position Thomson scattering system, which combines high accuracy and excellent spatial resolution, is operating on the stellarator TJ-II. Its diagnostic spectrometer is presented here. Its main characteristics, which provide the TJ-II Thomson scattering diagnostic with high spatial and spectral resolution, 2.2 mm and 2.1 nm, respectively, are described in this paper. In particular, the viewing optics has been designed in order to achieve low aberrations and distortions. The detector branch, which acts during a short pulse, ensures correct light intensification and synchronization with the laser beam. These attributes allow one to discriminate small-scale features that appear in density and temperature profiles in TJ-II plasmas, as well as steep gradients in both temperature and density profiles. Examples of results obtained demonstrating the characteristics of this system are presented.