ICRF heating of hydrogen plasmas with two mode conversion layers
ICRF mode conversion heating regime is widely used in present-day tokamaks. The theoretically predicted mode conversion enhancement due to the constructive interference of the fast wave reflected from the evanescence layer with a wave reflected from the high-field side cutoff was first experimentall...
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| Date: | 2010 |
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| Main Authors: | , , , , , |
| Format: | Article |
| Language: | English |
| Published: |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2010
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| Subjects: | |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/17452 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | ICRF heating of hydrogen plasmas with two mode conversion layers / Ye.O. Kazakov, D. Van Eester, E. Lerche, I.V. Pavlenko, I.O. Girka, B. Weyssow // Вопросы атомной науки и техники. — 2010. — № 6. — С. 37-39. — Бібліогр.: 9 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | ICRF mode conversion heating regime is widely used in present-day tokamaks. The theoretically predicted mode conversion enhancement due to the constructive interference of the fast wave reflected from the evanescence layer with a wave reflected from the high-field side cutoff was first experimentally identified in JET in (3He)D experiments. This effect was recently tested in (3He)H plasmas, which is one of the ICRF heating scenarios considered for the non-activated phase of ITER operation. Due to the presence of the intrinsic D-like impurities in JET (e.g., C6+, 4He) the supplementary conversion layer was produced in the plasma that defined the interference conditions. The different behavior of the conversion efficiency observed at various 3He concentrations is analyzed in the paper on the basis of the theory of the fast wave mode conversion in plasmas with two evanescence layers. |
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