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Abstract

High poloidal beta plasmas with a correspondingly high bootstrap fraction of approximately 70 % +/- 15 % have been produced using ion cyclotron resonance heating. This high bootstrap fraction is achieved 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 edge instability are discussed and the overall implications of these results for steady-state bootstrap dominated operation are examined.

Additional information

Authors: CHALLIS C D ET AL., JET Joint Undertaking, Abingdon, Oxon. (GB);HENDER T C, AEA Fusion, Culham Laboratory, Abingdon, Oxon. (GB);GIMBLETT C G, AEA Fusion, Culham Laboratory, Abingdon, Oxon. (GB);HAN J, AEA Fusion, Culham Laboratory, Abingdon, Oxon. (GB)
Bibliographic Reference: Report: JET-P(92)76 EN (1992) 17 pp.
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon. OX14 3EA (GB)
Record Number: 199310036 / Last updated on: 1994-11-29
Category: PUBLICATION
Original language: en
Available languages: en