Community Research and Development Information Service - CORDIS

Abstract

When an ion cyclotron resonance heating (ICRH) antenna array is phased, the excited asymmetric k(parallel)-spectrum can drive non-inductive currents by interaction of fast waves with electrons and Landau damping and ions at minority or harmonic cyclotron resonances depending on the scenario. A description is presented that includes the minority ion and electron current drive effects simultaneously in a 3-D ray tracing calculation in the tokamak geometry. The experimental results of sawtooth stabilisation or destabilisation in JET using the minority ion current drive are examined. Predictions of the model and its effects on sawtooth period, calculated in conjunction with a model of stability of internal resistive kink modes, are found be in good agreement with experimental results.

Additional information

Authors: BHATNAGAR V P, JET Joint Undertaking, Abingdon, Oxon. (GB);START D F H, JET Joint Undertaking, Abingdon, Oxon. (GB);JACQUINOT J, JET Joint Undertaking, Abingdon, Oxon. (GB);CHALAND F, JET Joint Undertaking, Abingdon, Oxon. (GB);CHERUBINI A, JET Joint Undertaking, Abingdon, Oxon. (GB);PORCELLI F, JET Joint Undertaking, Abingdon, Oxon. (GB)
Bibliographic Reference: Report: JET-P(94)22 EN (1994) 26 pp.
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon. OX14 3EA (GB)
Record Number: 199410764 / Last updated on: 1994-11-28
Category: PUBLICATION
Original language: en
Available languages: en