Local magnetic divertor for control of the plasma–limiter interaction in a tokamak
作者:
S. J. Zweben,
P. C. Liewer,
R. W. Gould,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1984)
卷期:
Volume 27,
issue 3
页码: 691-703
ISSN:0031-9171
年代: 1984
DOI:10.1063/1.864678
出版商: AIP
数据来源: AIP
摘要:
An experiment is described in which plasma flow to a tokamak limiter is controlled through the use of a local toroidal divertor coil mounted inside the limiter itself. This coil produces a local perturbed fieldBCapproximately equal to the local unperturbed toroidal fieldBT&bartil;3 kG, such that whenBCadds toBTthe field lines move into the limiter and the local plasma flow to it increases by a factor as great as 1.6, and whenBCsubtracts fromBTthe field lines move away from the limiter and the local plasma flow to it decreases by as much as a factor of 4. A simple theoretical model is used to interpret these results. Since these changes occur without significantly affecting global plasma confinement, such a control scheme may be useful for optimizing the performance of pumped limiters.
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