Construction of an Hα diagnostic system and its application to determine neutral hydrogen densities on the Keda Torus eXperiment

朱军锋; 兰涛; 庄革; 邓体建; 吴捷; 许航齐; 陈晨; 张森; 邬佳仁; 祖一鸣; 李弘; 谢锦林; 刘阿娣; 刘子奚; 吴征威; 汪海; 温晓辉; 周海洋; 肖持进; 丁卫星; 刘万东

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Construction of an Hα diagnostic system and its application to determine neutral hydrogen densities on the Keda Torus eXperiment

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A 10-channel Hα diagnostic system has been designed with the rapid response rate of 300 kHz, spatial resolution of about 40 mm, and overlap between adjacent channels of about 3%, and it has been implemented successfully on Keda Torus eXperiment(KTX), a newly constructed, reversed field pinch(RFP) experimental device at the University of Science and Technology of China(USTC). This diagnostic system is a very important tool for the initial KTX operations. It is compact,with an aperture slit replacing the traditional optical lens system. A flexural interference filter is designed to prevent the center wavelength from shifting too much as the increase of angle from vertical incidence. To eliminate the stray light,the interior of the system is covered with the black aluminum foil having a very high absorptivity. Using the Hαemission data, together with the profiles of electron temperature and density obtained from the Langmuir probe, the neutral density profiles have been calculated for KTX plasmas. The rapid response rate and good spatial resolution of this Hαdiagnostic system will be beneficial for many studies in RFP plasma physics.

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《中国物理：英文版》 |2019年第10期|428-434|共7页
作者
朱军锋; 兰涛; 庄革; 邓体建; 吴捷; 许航齐; 陈晨; 张森; 邬佳仁; 祖一鸣; 李弘; 谢锦林; 刘阿娣; 刘子奚; 吴征威; 汪海; 温晓辉; 周海洋; 肖持进; 丁卫星; 刘万东;
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作者单位

KTX Laboratory and Department of Engineering and Applied Physics;

University of Science and Technology of China;

Hefei 230026;

China;

Plasma Physics Laboratory;

University of Saskatchewan;

Saskatoon;

SK S7N 5E2;

Canada;

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原文格式 PDF
正文语种 chi
中图分类等离子体物理学;监视、报警、故障诊断系统;
关键词
Hα; diagnostic; neutral; density; Keda; Torus; eXperiment(KTX); device;

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Construction of an Hα diagnostic system and its application to determine neutral hydrogen densities on the Keda Torus eXperiment

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