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核聚变与等离子体物理 ›› 2005, Vol. 25 ›› Issue (1): 65-68.

• 研究报告 • 上一篇    下一篇

HL-2A装置偏滤器室中性气体压强规

王明旭1,李 波1,杨志刚1,严龙文1,张年满1,廖志清1,严东海1,郭建军2   

  1. (1.核工业西南物理研究院,成都610041;2.西华大学应用物理研究所,成都610039)
  • 收稿日期:2004-05-10 修回日期:2004-11-08 出版日期:2005-03-15 发布日期:2024-09-06
  • 作者简介:王明旭(1963-),辽宁省沈阳市人,研究员,从事等离子体与表面相互作用及第一壁材料性能研究工作。
  • 基金资助:

    国家自然科学基金资助项目(10075017)

Development of a fast ionization gauge in the HL-2A tokamak

WANG Ming-xu,LI Bo,YANG Zhi-gang,YAN Long-wen,ZHANG Nian-man,LIAO Zhi-qing,YAN Dong-hai,GUO Jian-jun   

  1. (1. Southwestern Institute of Physics, Chengdu 610041;2. Institute of Applied Physics, Xihua University , Chengdu 610039)
  • Received:2004-05-10 Revised:2004-11-08 Online:2005-03-15 Published:2024-09-06

摘要:

研制了一种可工作于强磁场、强干扰环境下的快响应真空电离规(快规)。介绍了快规的结构、

原理、设计梗概和在HL-2A装置偏滤器室中原位测量中性气体压强的实验结果。无磁场时,在

压强1×10-5~6×10-1 的范围内,快规的线性度好,H2压强的测量上限为1.5Pa,He压强的测量上限

为4Pa,覆盖了目前HL-2A装置偏滤器的运行范围;快规处磁感应强度在0.6T左右时,其灵敏度约

提高至无磁场下的3倍。快规的响应时间小于4ms, 并且具有较强的抗干扰能力。

关键词: 电离真空规, 中性气体压强, 快时间响应, 强抗干扰能力

Abstract:

A fast ionization gauge in a strong magnetic field and noisy environment is developed for

measuring the pressure in the divertor chamber of the HL-2A tokamak. The configuration, the

principles, the design outlines of the fast gauge and the results obtained on the HL-2A tokamak

are described. Without a magnetic field, the N2 pressure region of the fast gauge is from

6.4×10-6 to 0.6 Pa,and the ratio of ion current to electron current increases linearly with the

pressure. The highest pressure measured by the fast ionization gauge is 1.5 Pa for H2 and 4

Pa for He. With magnetic field of 0.6T,the sensitivityof the fastgauge increases by a factorof 3.

The fastgauge has a fasttime response less than 4 ms and has high noise rejection.

Key words: Ionization gauge, Strong magnetic field, Fast time response, High noise rejection

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