快电子对快离子损失诊断测量的影响

金钊; 常加峰; 黄娟; 吴承瑞; 林士耀

doi:10.11889/j.0253-3219.2017.hjs.40.110605

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快电子对快离子损失诊断测量的影响

核能科学与工程 | 更新时间：2021-05-19

- 快电子对快离子损失诊断测量的影响
- The effect of fast electrons on fast ion loss detector
- 核技术 2017年40卷第11期文章编号：110605
- 作者机构：
  
  1.中国科学院等离子体物理研究所合肥 230031
  2.中国科学技术大学合肥 230026
- 作者简介：
  
  [ "金钊, 女, 1993年出生, 2014年毕业于长春理工大学, 现为硕士研究生, 研究领域为等离子体物理", "JIN Zhao, female, born in 1993, graduated from Changchun University of Science and Technology in 2014, master student, focusing on plasma physics" ]
  常加峰, E-mail:changjiaf@ipp.ac.cn CHANG Jiafeng, E-mail:changjiaf@ipp.ac.cn
- 基金信息：
  
  国家磁约束聚变能源研究专项(2014GB109004);国家磁约束聚变能源研究专项(2015GB110005);国家自然科学基金(11575249)
- DOI：10.11889/j.0253-3219.2017.hjs.40.110605
  中图分类号： TL99
- 收稿日期：2017-05-18，
  
  修回日期：2017-06-30，
  
  纸质出版日期：2017-11-10
- 稿件说明：
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金钊, 常加峰, 黄娟, 等. 快电子对快离子损失诊断测量的影响[J]. 核技术, 2017,40(11):110605

Zhao JIN, Jiafeng CHANG, Juan HUANG, et al. The effect of fast electrons on fast ion loss detector[J]. Nuclear techniques, 2017, 40(11): 110605
金钊, 常加峰, 黄娟, 等. 快电子对快离子损失诊断测量的影响[J]. 核技术, 2017,40(11):110605 DOI： 10.11889/j.0253-3219.2017.hjs.40.110605.

Zhao JIN, Jiafeng CHANG, Juan HUANG, et al. The effect of fast electrons on fast ion loss detector[J]. Nuclear techniques, 2017, 40(11): 110605 DOI： 10.11889/j.0253-3219.2017.hjs.40.110605.

摘要

基于闪烁体原理的快离子损失探针（Fast Ion Loss Detector，FILD），可以同时测量损失快离子的能量和pitch-angle的值，是核聚变装置中对高能粒子诊断的重要方式。根据先进实验超导托卡马克（Experimental Advanced Superconducting Tokamak，EAST）的发展需求，为了更好地对损失快离子行为进行研究，设计并安装了快离子损失诊断，且探测到在中性束加热条件下产生的损失快离子。同时，探测到在放电中产生的逃逸电子，以及低杂波注入时快电子产生X射线对快离子损失背景信号的影响。并且在H-mode放电时边界扰动也对快离子损失信号产生影响，这些探测到的现象都为不断升级损失诊断系统提供依据。

Abstract

Background

A scintillator-based fast ion loss detector (FILD) can simultaneously measure the energy and pitch angle of escaped fast ions

which is a powerful method to study the behavior of fast ion feature.

Purpose

Investigating the performance of the fast ion loss is very helpful for understanding plasma confinement due to the development of experimental advanced superconducting tokamak (EAST).

Methods

FILD has been successfully put into operation on EAST

and the behavior of fast ion can be analyzed by charge coupled device (CCD) and photomultiplier tube (PMT) data acquisition system.

Results

When the neutral beams were injected

the fast ion losses were detected. Runaway electrons and the fast electrons were observed when lower hybrid waves were injected into plasma

resulting in the effect of X-rays on the fast ion loss signal. In H-mode discharge condition

the fast ion losses signal changed with D-alpha signals.

Conclusion

Fast ion loss detector system plays an important role in investigating loss ions behavior during neutral beam heating. Runaway electrons and fast electrons would affect the fast ion loss signal. At the same time

FILD will be upgraded with the probe structure and new scintillator material will be selected to minimize the impact of X-ray.

关键词

Keywords

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