Ion Temperature Measurement in the RF Heated Plasma

The ion temperature, rotation velocity, and impurity density can be obtained from CHarge Exchange Recombination Spectroscopy (CHERS) diagnostics, one of active beam diagnostics, using NBI or DNB. We measure the charge exchange emission line of the carbon using CHERS and DNB system and analyze the io...

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Published inFusion science and technology Vol. 51; no. 2T; pp. 295 - 297
Main Authors Ko, Won Ha, Na, Hoon Kyun, Seo, Seong-Heon, Kwon, Myeun
Format Journal Article
LanguageEnglish
Published Taylor & Francis 01.02.2007
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Summary:The ion temperature, rotation velocity, and impurity density can be obtained from CHarge Exchange Recombination Spectroscopy (CHERS) diagnostics, one of active beam diagnostics, using NBI or DNB. We measure the charge exchange emission line of the carbon using CHERS and DNB system and analyze the ion temperature from the emission line in the RF heated HANBIT plasma. DNB system which has 27 kV beam voltage and 50 msec pulse width must be controlled critically to measure the exact ion temperature in the experiments. End loss ion temperature measured using energy analyzer is compared with the ion temperature obtained from the charge exchange emission line. The CHERS diagnostics has been widely used to measure ion temperature and poloidal rotation velocity in tokamak.
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ISSN:1536-1055
1943-7641
DOI:10.13182/FST07-A1380