Modeling of the Traveling Wave Antenna in view of the ICRF heating of DEMO
1 Laboratory for Plasma Physics, Royal Military Academy, (LPP-ERM/KMS), BE-1000, Brussels, Belgium
2 Ghent University, Department of Applied Physics, 9000 Ghent, Belgium
* Corresponding author: firstname.lastname@example.org
Published online: 23 October 2017
An upgraded version of the fast semi-analytical code ANTITER is used to model the refueled TWA sections of any arbitrary number of straps facing a low coupling plasma profile. The code computes the Y, Z and S matrices of the antenna array from which the performances of the TWA sections and of their feeding system are deduced as a function of the geometry of the TWA. The model incorporates the feeding of the section by a resonant ring circuit recirculating the output power of each section. Approximate scaling laws guiding the design are derived for the antenna main parameters. A first optimization of the design for the DEMO antenna section is made and the resulting power capability of a DEMO system evaluated.
© The authors, published by EDP Sciences, 2017
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