Measurement of tungsten impurity spectra with a two-crystal X-ray crystal spectrometer on EAST

Liang HE (何梁); Jun CHEN (陈俊); Fudi WANG (王福地); Jinjia CAO (曹锦佳); Hongming ZHANG (张洪明); Jia FU (符佳); Yingying LI (李颖颖); Yichao LI (李义超); Bin BIN (宾斌); Qingjiang YU (余青江); Shunkuan WAN (万顺宽); Jin YANG (杨进); Xunyu WANG (王勋禹); Bo LYU (吕波); Xueyu GONG (龚学余)

doi:10.1088/2058-6272/ab84ee

Plasma Science and Technology > 2020 > 22(8): 84002-084002. > DOI: 10.1088/2058-6272/ab84ee

Liang HE (何梁), Jun CHEN (陈俊), Fudi WANG (王福地), Jinjia CAO (曹锦佳), Hongming ZHANG (张洪明), Jia FU (符佳), Yingying LI (李颖颖), Yichao LI (李义超), Bin BIN (宾斌), Qingjiang YU (余青江), Shunkuan WAN (万顺宽), Jin YANG (杨进), Xunyu WANG (王勋禹), Bo LYU (吕波), Xueyu GONG (龚学余). Measurement of tungsten impurity spectra with a two-crystal X-ray crystal spectrometer on EAST[J]. Plasma Science and Technology, 2020, 22(8): 84002-084002. DOI: 10.1088/2058-6272/ab84ee

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Measurement of tungsten impurity spectra with a two-crystal X-ray crystal spectrometer on EAST

¹ Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
² School of Nuclear Science and Technology, University of South China, Hengyang 421001, People's Republic of China
³ Department of Engineering and Applied Physics, University of Science and Technology of China, Hefei 230026, People's Republic of China

Funds: This work is partially supported by the National Magnetic Confinement Fusion Science Program of China (Nos. 2017YFE0301300 and 2018YFE0301100), the Key Program of Research and Development of the Hefei Science Center (No. 2017HSC- KPRD002), National Natural Science Foundation of China (Nos. 11805231 and 11705151), the ASIPP Science and Research Grant (No. DSJJ-17-03), the Anhui Provincial Natural Science Foundation (Nos. 1808085QA14 and 1908085J01), the Instrument Developing Project of the Chi- nese Academy of Sciences (No. YJKYYQ20180013), the Collaborative Innovation Program of Hefei Science Center, CAS (No. 2019HSC-CIP005), the Nature Science Foundation of Hunan Province (2017JJ3268), the Hunan Nuclear Fusion International Science and Technology Innovation Coopera- tion Base (No. 2018WK4009), and the Key Laboratory of Magnetic Confinement Nuclear Fusion Research in Hengyang (No. 2018KJ108).

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Received Date: January 08, 2020
Revised Date: March 24, 2020
Accepted Date: March 26, 2020

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Abstract

Abstract

Spectral measurement of tungsten (W) impurity is essential to study impurity transport. Therefore, an X-ray crystal spectrometer (XCS) on EAST was used to measure the line spectra from highly ionized W ions. On EAST, both poloidal XCS and tangential XCS have been developed to measure the plasma temperature as well as the rotation velocity. Recently, He-like and H-like argon spectra have also been obtained using a two-crystal setup. W lines are identified in this study. Through a careful analysis, the W lines of 3.9336, 3.9321, and 3.664 Å are found to be diffracted by He-like or H-like crystals. The lines are confirmed with the NIST database. We also calculated the ion temperature with Doppler broadening of these lines. The ion temperature from the W lines is entirely consistent with that from Ar line spectra. The measurement of these W line spectra could be used to study W impurity transport in future work.
- tungsten spectra,
- X-ray crystal spectrometer,
- two-crystal

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References

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Measurement of tungsten impurity spectra with a two-crystal X-ray crystal spectrometer on EAST