Community Research and Development Information Service - CORDIS

Abstract

In discharges with internal transport barriers produced by combined neutral beam injection and ion cyclotron resonance frequency (ICRF) heating using the hydrogen minority scheme in JET, the confinement and fusion performance are strongly affected by the direction of propagation of the ICRF waves. When the waves propagate along the plasma current, the formation of an internal transport barrier is prompter and the neutron yield is up to a factor if two higher than for propagation against the current. An ICRF induced pinch of resonating trapped ions is put forward as a candidate for explaining the observations. Simulation results are presented which show that this effect is strong enough to provide a credible explanation for the experimental results.

Additional information

Authors: MANTSINEN M J, Helsinki University of Technology, Association Euratom-TEKES (FI);ERIKSSON L-G, Association EURATOM-CEA sur la Fusion, CEA Cadarache, St Paul lez Durance (FR);LITAUDON X, Association EURATOM-CEA sur la Fusion, CEA Cadarache, St Paul lez Durance (FR);HAWKES N C, Euratom/UKAEA Fusion Association, Culham Science Centre, Abingdon, Oxfordshire (GB);HELLSTEN T, Royal Institute of Technology, Stockholm (SE);STRATTON B C, Princeton Plasma Physics Laboratory, Princeton, New Jersey (US);GORMEZANO C, JET Joint Undertaking, Abingdon, Oxfordshire (GB);RIMINI F, JET Joint Undertaking, Abingdon, Oxfordshire (GB);SHARAPOV S, JET Joint Undertaking, Abingdon, Oxfordshire (GB)
Bibliographic Reference: Report: JET-P(99)66
Availability: Available from JET Joint Undertaking, Abingdon, Oxfordshire (GB)
Record Number: 200012770 / Last updated on: 2000-09-20
Category: PUBLICATION
Original language: en
Available languages: en