Analysis of electron temperature, impurity transport and MHD activity with multi-energy soft x-ray diagnostic in EAST tokamak

Heng LAN (兰恒); Guosheng XU (徐国盛); Kevin TRITZ; Ning YAN (颜宁); Tonghui SHI (石同辉); Yongliang LI (李永亮); Tengfei WANG (王腾飞); Liang WANG (王亮); Jingbo CHEN (陈竞博); Yanmin DUAN (段艳敏); Yi YUAN (原毅); Youwen SUN (孙有文); Shuai GU (顾帅); Qing ZANG (臧庆); Ran CHEN (陈冉); Liang CHEN (陈良); Xingwei ZHENG (郑星炜); Shuliang CHEN (陈树亮); HuanLIU (刘欢); YangYE (叶扬); Huiqian WANG (汪惠乾); Baonian WAN (万宝年); the EAST Team

doi:10.1088/2058-6272/aa8cbf

Plasma Science and Technology > 2017 > 19(12): 125101. > DOI: 10.1088/2058-6272/aa8cbf

Heng LAN (兰恒), Guosheng XU (徐国盛), Kevin TRITZ, Ning YAN (颜宁), Tonghui SHI (石同辉), Yongliang LI (李永亮), Tengfei WANG (王腾飞), Liang WANG (王亮), Jingbo CHEN (陈竞博), Yanmin DUAN (段艳敏), Yi YUAN (原毅), Youwen SUN (孙有文), Shuai GU (顾帅), Qing ZANG (臧庆), Ran CHEN (陈冉), Liang CHEN (陈良), Xingwei ZHENG (郑星炜), Shuliang CHEN (陈树亮), HuanLIU (刘欢), YangYE (叶扬), Huiqian WANG (汪惠乾), Baonian WAN (万宝年), the EAST Team. Analysis of electron temperature, impurity transport and MHD activity with multi-energy soft x-ray diagnostic in EAST tokamak[J]. Plasma Science and Technology, 2017, 19(12): 125101. DOI: 10.1088/2058-6272/aa8cbf

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Analysis of electron temperature, impurity transport and MHD activity with multi-energy soft x-ray diagnostic in EAST tokamak

1 Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China 2 University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 3 Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, United States of America 4 Oak Ridge Associated Universities, Oak Ridge, TN 37831, United States of America

Funds: This work was supported by National Magnetic Confinement Fusion Science Program of China under Contracts Nos. 2015GB101000, 2013GB106000, and 2013GB107000 as well as National Natural Science Foundation of China under Contracts Nos. 11575235, 11422546 and 11505222 and Youth Foundation of ASIPP under Grant No. Y45ETY2306.

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Received Date: June 03, 2017

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Abstract

Abstract

A new edge tangential multi-energy soft x-ray (ME-SXR) diagnostic with high temporal (≤ 0.1 ms) and spatial (～1cm) resolution has been developed for a variety of physics topics studies in the EAST tokamak plasma. The fast edge electron temperature profile (approximately from r/ a ~0.6 to the scrape-off layer) is investigated using ME-SXR diagnostic system. The data process was performed by the ideal ‘multi-foil’ technique, with no priori assumptions of plasma profiles. Reconstructed ME-SXR emissivity profiles for a variety of EAST experimental scenarios are presented here for the first time. The applications of the ME-SXR for study of the effects of resonant magnetic perturbation on edge localized modes and the first time neon radiating divertor experiment in EAST are also presented in this work. It has been found that neon impurity can suppress the 2/1 tearing mode and trigger a 3/1 MHD mode.
- ME-SXR,
- ‘multi-foil’ technique,
- electron temperature estimate,
- RMP,
- ELM,
- impurity

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References (39)

References

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Analysis of electron temperature, impurity transport and MHD activity with multi-energy soft x-ray diagnostic in EAST tokamak