EPJ Web Conf.
Volume 157, 201722 Topical Conference on Radio-Frequency Power in Plasmas
|Number of page(s)||5|
|Published online||23 October 2017|
Reinstated JET ICRF ILA: Overview and Results
EUROfusion Consortium, JET, Culham Science Centre, Abingdon, OX14 3DB, UK
1 LPP-ERM/KMS, TEC partner, Brussels, Belgium
2 CCFE, Culham Science Centre, Abingdon, United Kingdom
3 IRFM CEA Cadarache 13108 Saint Paul lez Durance France
4 Max-Planck-Institut für Plasmaphysik, D-85748 Garching, Germany
5 Oak Ridge National Laboratory, PO Box 2008, Oak Ridge, United States
* Corresponding author: firstname.lastname@example.org
Published online: 23 October 2017
The works undertaken to reinstate the JET ICRF ILA are reviewed. The vacuum matching capacitors were replaced, an extensive calibration of all the measurements in the RF circuit was carried out, new simulation tools were created and new control algorithms were implemented for the – toroidal and poloidal – phase control of the array as well as for the matching of the second stage. A review of the contribution of the reinstated ILA to the JET programme during the last campaigns is given showing namely that the new controls allowed extending the range of the operation to lower (29MHz) and higher (51MHz) frequencies than previously achieved and allowed more flexible and reliable operation. Operation with coupled power levels up to 2.8MW and voltages up to 40kV was achieved. ILA results on plasma are discussed and emphasis is given to the features of interest for ITER.
© The authors, published by EDP Sciences, 2017
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