HL-2A托卡马克汤姆逊散射系统的研制。

The development of Thomson scattering system on HL-2A tokamak.

作者信息

Huang Y, Zhang P, Feng Z, Liu C H, Shi P L, Ding X T, Liu Yong

机构信息

Southwestern Institute of Physics, PO Box 432, Chengdu 610041, China.

出版信息

Rev Sci Instrum. 2007 Nov;78(11):113501. doi: 10.1063/1.2804105.

DOI:10.1063/1.2804105

PMID:18052468

Abstract

A new Thomson scattering diagnostic system is successfully developed to measure core plasma electron temperature (Te) and density (ne) of HL-2A tokamak (major radius R=165 cm, minor radius a=40 cm). In this system, a standard lamp-monochromator combination is utilized for the calibration of spectral responses. By sweeping in the range of 750-1200 nm with a step of 2 nm, the work can be done automatically for one-point calibration and then for other. Electronic gain calibration and gain monitoring are done by pulsed light emitting diode light. By utilizing an intense Nd:YAG laser of pulse energy up to 4 J and employing good quality interference filters in the five-channel filter polychromator to surpress greatly the stray light, the TS system can be routinely used to make measurements with good quality data. After each HL-2A plasma discharge, the measured Te and ne data are transferred to HL-2A database for lookup and analyses.

摘要

成功开发了一种新的汤姆逊散射诊断系统，用于测量HL-2A托卡马克（大半径R = 165厘米，小半径a = 40厘米）的核心等离子体电子温度（Te）和密度（ne）。在该系统中，采用标准灯 - 单色仪组合进行光谱响应校准。通过在750 - 1200纳米范围内以2纳米的步长进行扫描，可以自动完成单点校准，然后再进行其他校准。电子增益校准和增益监测通过脉冲发光二极管光来完成。通过使用脉冲能量高达4焦耳的强Nd:YAG激光，并在五通道滤光片多色仪中采用高质量的干涉滤光片来极大地抑制杂散光，该汤姆逊散射系统可常规用于获取高质量数据的测量。每次HL-2A等离子体放电后，测量得到的Te和ne数据被传输到HL-2A数据库进行查找和分析。