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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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