2015 Fiscal Year Final Research Report
Measurement of Electron Temperature Profile using BXO Mode Conversion in Overdense Plasmas
| Project/Area Number |
25420885
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Nuclear fusion studies
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
KOBAYASHI Shinji 京都大学, エネルギー理工学研究所, 助教 (70346055)
YAMAMOTO Satoshi 京都大学, エネルギー理工学研究所, 助教 (70397529)
OHSHIMA Shinsuke 京都大学, エネルギー理工学研究所, 助教 (00469610)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 電子バーンスタイン波 / カットオフ / モード変換 / 電子温度計測 |
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| Outline of Final Research Achievements |
We have studied the possibility of electron temperature profile measurement using electron Bernstein waves (EBW) in order to overcome accessible density limit, so called cut-off density.
A ray tracing code, KRAY, has been developed to trace the BXO mode conversion, which includes three dimensional magnetic configuration with finite beta. The calculation results show that the OX mode conversion efficiency of nearly 100% is available with current ECRH antenna system. Based on this calculation, we have designed and constructed a 8-channel radiometer system for EBW detection. We confirmed that the electron cyclotron waves of nW level power can be measured.
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| Free Research Field |
核融合学
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