PLASMA - ANTENNA COUPLING AND RELATED SCRAPE-OFF LAYER STUDIES ON JET
During the first six months of 1985 the four types of different RF antenna configurations were tested on JET. The antenna performance in terms of coupling efficiency and plasma heating was investigated. In this paper we present the results on plasma - antenna coupling and also discuss the modification of scrape-off layer by RF power. The coupling resistance was measured as a function of plasma - antenna distance at different plasma densities, magnetic fields, frequencies and power levels. The experiments were performed in a deuterium plasma with Helium and Hydrogen gas as minority species. The resonances of RF field in the toroidal cavity were observed when the minority concentration was varied. The maximum power delivered to the transmission line, when operating both antennae was 5.5 MW.
Bibliographic Reference: 12TH EUROPEAN CONFERENCE ON CONTROLLED FUSION AND PLASMA PHYSICS, BUDAPEST (HUNGARY), SEPT. 2-6, 1985 PP. 97-100 WRITE TO THE PUBLICATIONS OFFICER, JET JOINT UNDERTAKING, ABINGDON, OXON, OX14 3EA (UK), MENTIONING REPORT JET-P(85)10, 1985
Record Number: 1989124054300 / Last updated on: 1987-01-01
Available languages: en