Accounting of the power balance for neutral-beam heated H-mode plasmas in NSTX

JOURNAL OF NUCLEAR MATERIALS

卷:337

Article; Proceedings Paper

Paul, SF ; Maingi, R ; Soukhanovskii, V ; Kaye, SM ; Kugel, HW

关键词: divertor;    edge plasma;    power balance;    NSTX;   

DOI  :  10.1016/j.jnucmat.2004.10.153

来源: Elsevier

【 摘 要 】

Power balance accountability was investigated for neutral beam heated plasmas in NSTX. Measurements of heat to the divertor strike plates and radiation in the divertor and the core were made as a function of heating power in lower single-null (LSN) and double-null (DN) configurations. Up to 70% of the net input power is accounted in the LSN discharges with; approximate to 15-20% of power lost as fast ions, approximate to 25-35% incident on the divertor plates, approximate to 5% radiated in the core, and approximate to 5-10% radiated in the divertor. In DN discharges, the fast ion loss is comparable to LSN discharges, the core radiated power fraction is approximate to 10%, and the power deposited in the lower divertor as radiation and heat flux is approximate to 20-25% of the total. Assuming up/down symmetry, the power accountability in DN is approximate to 85-90%. (c) 2004 Elsevier B.V. All rights reserved.

【 授权许可】

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