High bootstrap current ICRH plasmas in JET
- 1 August 1993
- journal article
- Published by IOP Publishing in Nuclear Fusion
- Vol. 33 (8), 1097-1105
- https://doi.org/10.1088/0029-5515/33/8/i01
Abstract
High poloidal beta plasmas with a correspondingly high bootstrap fraction of 70+or-15% have been produced using ion cyclotron resonance heating, in an ELM free H mode confinement regime. This regime is terminated by a large edge instability, causing a reversion to L mode confinement. Possible causes for this instability are discussed and the overall implications of the results for steady state bootstrap dominated operation are examinedKeywords
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