Community Research and Development Information Service - CORDIS

Abstract

This paper summarizes the recent work on JET in the three areas of heating, current drive and energetic particles. The achievements have extended the possibilities of JET, have a direct connection to ITER operation and provide new and interesting physics. Toroidal rotation profiles of plasmas heated far off axis with little or no refuelling or momentum input are hollow with only small differences on whether the power deposition is located on the low field side or on the high field side. With LH current drive the magnetic shear was varied from slightly positive to negative. The improved coupling (through the use of plasma shaping and CD4) allowed up to 3.4 MW of P(LH) in internal transport barrier (ITB) plasmas with more than 15 MW of combined NBI and ICRF heating. The q-profile with negative magnetic shear and the ITB could be maintained for the duration of the high heating pulse (8 s). Fast ions have been produced in JET with ICRF to simulate alpha particles: by using third harmonic {4}He heating, beam injected {4}He at 120 kV were accelerated to energies above 2 MeV, taking advantage of the unique capability of JET to use NBI with {4}He and to confine MeV class ions. ICRF heating was used to replicate the dynamics of alpha heating and the control of an equivalent Q = 10 `burn' was simulated.

Additional information

Authors: NOTERDAEME J-M, Max-Planck-Institut für Plasmaphysik, IPP-EURATOM Association, Garching (DE);HARTMANN D, Max-Planck-Institut für Plasmaphysik, IPP-EURATOM Association, Garching (DE);BUDNY R, PPPL Princeton (US);CARDINALI A ET AL, ENEA, Euratom Association, Frascati (IT);deGRASSIE J, General Atomics, San Diego (US);D'IPPOLITO D A, Lodestar Research Corporation, Boulder (US);MYRA J R, Lodestar Research Corporation, Boulder (US);DURODIÉ F, Association Euratom-Belgian State, LPP-ERM/KMS, Brussels (BE);VAN EESTER D, Association Euratom-Belgian State, LPP-ERM/KMS, Brussels (BE);EKEDAHL A ET AL, Association Euratom-CEA, Cadarache (FR);FIGUEIREDO A, IST, Euratom Association (PT);INGESSON C, FOM, Euratom Association, Nieuwegein (NL);HEIIKKINEN J, Association Euratom-Tekes, VTT (FI);HELLSTEN T, NFR, Euratom Association, Stockholm (SE);LAMALLE P, EFDA-CSU JET, Abingdon (GB);JONES T ET AL, UKAEA, Euratom Association, Abingdon (GB);MANTSINEN M, Association Euratopm-Tekes, Helsinki University of Technology (FI);PETROV Y, Prairie View A&M University, Prairie View (US);SAUTER O, CRPP, EPFL, Euratom Association, Lausanne (CH)
Bibliographic Reference: An article published in: Nuclear Fusion 43 (March 2003) 202-209
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://stacks.iop.org/0029-5515/43/202
Record Number: 200316346 / Last updated on: 2003-06-09
Category: PUBLICATION
Original language: en
Available languages: en