CST – Computer Simulation Technology

Three-dimensional electromagnetic modelling of the JET ITER-Like ICRF antenna

Title:
Three-dimensional electromagnetic modelling of the JET ITER-Like ICRF antenna
Author(s):
P U Lamalle, F Durodié, A Whitehurst, R H Goulding, P M Ryan , EFDA JET Workprogramme Contributors*
Source:
Radio Frequency Power in Plasmas: 15th Topical Conference on Radio Frequency Power in Plasmas. AIP Conference Proceedings
Vol./Issue/Date:
Volume 694
Year:
2003
Page(s):
122-125
Keywords:
plasma radiofrequency heating, cyclotron resonance, ions, antennas in plasma, feedback, modelling
Abstract:
During its design phase, the JET ITER-Like ICRF antenna array has been modeled in great detail with the 3D electromagnetic software CST MICROWAVE STUDIO®. The resulting rf field and current density patterns have guided the optimization of the antenna feeder shapes, leading overall to a strong reduction (~25%) of the maximum electric field, and to a factor-ofthree reduction of the inhomogeneity of rf current at the matching capacitors. The computed frequency response of the array is now used in matching studies and development of a control algorithm. Comparison with the experimental frequency response of the High Power antenna Prototype developed by ORNL and PPPL shows fair agreement.
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