Probe diagnostics in the far scrape-off layer plasma of Korea Superconducting Tokamak Advanced Research tokamak using a sideband harmonic method

Plasma characteristics in the far scrape-off layer region of tokamak play a crucial role in the stable plasma operation and its sustainability. Due to the huge facility, electrical diagnostic systems to measure plasma properties have extremely long cable length resulting in large stray current. To o...

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Bibliographic Details
Published in:Review of scientific instruments 2015-12, Vol.86 (12), p.123508-123508
Main Authors: Kim, Dong-Hwan, Hong, Suk-Ho, Park, Il-Seo, Lee, Hyo-Chang, Kang, Hyun-Ju, Chung, Chin-Wook
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Diagnostic systems
Electron energy
ELECTRON TEMPERATURE
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
OPERATION
Plasma
PLASMA DENSITY
PLASMA SCRAPE-OFF LAYER
RELIABILITY
REPUBLIC OF KOREA
Scientific apparatus & instruments
Stray current
Superconductivity
SUSTAINABILITY
TOKAMAK DEVICES
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Summary:Plasma characteristics in the far scrape-off layer region of tokamak play a crucial role in the stable plasma operation and its sustainability. Due to the huge facility, electrical diagnostic systems to measure plasma properties have extremely long cable length resulting in large stray current. To overcome this problem, a sideband harmonic method was applied to the Korea Superconducting Tokamak Advanced Research tokamak plasma. The sideband method allows the measurement of the electron temperature and the plasma density without the effect of the stray current. The measured plasma densities are compared with those from the interferometer, and the results show reliability of the method.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4937610