Reinstated JET ICRF ILA: Overview and Results

Conference · Sun Oct 01 04:00:00 EDT 2017

DOI:https://doi.org/10.1051/epjconf/201715703010· OSTI ID:1847508

Dumortier, Pierre ^[1]; Durodie, F. ^[2]; Blackman, Trevor ^[1]; Helou, Walid ^[3]; Jacquet, Philippe ^[3]; Lerche, Ernesto ^[1]; Monakhov, Igor ^[4]; Noble, Craig ^[4]; Bobkov, Volodymyr ^[5]; Goulding, Richard ^[4]; Kaufman, Michael ^[4]; Van Eester, Dirk ^[6]

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1. Culham Centre for Fusion Energy (CCFE), Abingdon, UK
2. ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium
3. French Atomic Energy Commission (CEA), Institute for Magnetic Fusion Research (IRFM)
4. ORNL
5. Max-Planck-Institut fur Plasmaphysik, Garching, Germany
6. Laboratory for Plasma Physics-ERM/KMS (LPP-ERM/KMS), Brussels, Belgium

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.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1847508
• Country of Publication: United States
• Language: English