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Current drive by spheromak injection into a tokamak

Brown, M. R. and Bellan, P. M. (1990) Current drive by spheromak injection into a tokamak. Physical Review Letters, 64 (18). pp. 2144-2147. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:BROprl90

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Abstract

We report the first observation of current drive by injection of a spheromak plasma into a tokamak (Caltech ENCORE small reasearch tokamak) due to the process of helicity injection. After an abrupt 30% increase, the tokamak current decays by a factor of 3 due to plasma cooling caused by the merging of the relatively cold spheromak with the tokamak. The tokamak density profile peaks sharply due to the injected spheromak plasma (n¯3 increases by a factor of 6) then becomes hollow, suggestive of an interchange instability.


Item Type:Article
Additional Information:©1990 The American Physical Society. Received 5 October 1989. This work was performed under DOE Grant No. DE-FG03-86ER53232. M.R.B. is a U.S. DOE Fusion Energy Postdoctoral Research Fellow.
Record Number:CaltechAUTHORS:BROprl90
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:BROprl90
Alternative URL:http://dx.doi.org/10.1103/PhysRevLett.64.2144
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9335
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:13 Dec 2007
Last Modified:18 Sep 2014 18:11

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