Measuring tokamak plasma impurity density by spectroscopic method

Yongcai SHEN; Jia FU; Bo LYU; Bin WU; Yuejiang SHI; Yingying LI; Fudi WANG; Zhengying CUI

doi:10.11889/j.0253-3219.2016.hjs.39.020603

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Measuring tokamak plasma impurity density by spectroscopic method

更新时间：2021-05-24

- Measuring tokamak plasma impurity density by spectroscopic method
- NUCLEAR TECHNIQUES Vol. 39, Issue 2, Article number: 020603(2016)
- 作者机构：
  
  1.安庆师范学院物理与电气工程学院安庆 246011;
  2.中国科学院等离子体物理研究所合肥 230031;
  3.中国科学院合肥大科学中心合肥 230031;
  4.中国科学技术大学核科学技术学院合肥 230026;
  5.首尔大学核工程系韩国首尔 151-742;
  6.核工业西南物理研究院成都 610041
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2016.hjs.39.020603
  CLC： TL65.1
- Received：22 December 2015，
  
  Accepted：2016-01-11，
  
  Published：25 January 2016
- 稿件说明：
移动端阅览
Yongcai SHEN, Jia FU, Bo LYU, et al. Measuring tokamak plasma impurity density by spectroscopic method[J]. Nuclear techniques, 2016, 39(2): 020603
DOI：

Yongcai SHEN, Jia FU, Bo LYU, et al. Measuring tokamak plasma impurity density by spectroscopic method[J]. Nuclear techniques, 2016, 39(2): 020603 DOI： 10.11889/j.0253-3219.2016.hjs.39.020603.

摘要

本文介绍了基于托卡马克等离子体被动光谱诊断获得杂质密度的方法。通过被动光谱诊断测量获得杂质线辐射的空间多道弦积分强度分布

利用强度标定系数转换为绝对光亮度分布;通过测量弦与等离子体位形

将弦积分的强度分布反演变换为径向体发射率。根据线辐射强度激发截面求出对应电离态的离子密度

最后采用杂质输运程序模拟计算得出总密度分布。以东方超环(Experimental Advanced SuperconductingTokamak

EAST)托卡马克装置上软X射线-极紫外光谱(Soft X-ray and Extreme Ultraviolet Spectrometers

XEUV)诊断测量到的Mo XXIX-Mo XXXII为例

描叙了获得Mo杂质密度分布的过程

获得的总误差小于10%。

Abstract

Background:

Impurity density measurement is very important in tokamak plasma

especially for impurity behavior and transport study.

Purpose:

This study aims to obtain the impurity density of tokamak plasma by using passive spectroscopy diagnostics.

Methods:

Line emissions of impurity are measured by passive spectroscopy diagnostics

and the chord-integrated brightness profiles are obtained by multiplying the sensitivity calibration coefficients. The radial emissivity profiles corresponding to a certain number of considered magnetic surfaces can be obtained by using the version technique. Then the density profiles of impurity ions can be acquired according to the relationship of emissivity profiles and density profiles of impurity ions. And the total impurity density distribution can be calculated by the simulation of impurity transport code.

Results:

Experimental results on obtaining of total molybdenum density on experimental advanced superconducting tokamak (EAST) by soft X-ray and extreme ultraviolet spectrometers (XEUV) show the total measureing error is less than 10%.

Conclusion:

Impurity density can be measured by using spectroscopic method

combining spectroscopy diagnostics and impurity transport code.

关键词

Keywords

references

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