Modeling of the Traveling Wave Antenna in view of the ICRF heating of DEMO

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...

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Bibliographic Details
Published inEPJ Web of Conferences Vol. 157; p. 3033
Main Authors Messiaen, Andre, Ragona, Riccardo
Format Journal Article Conference Proceeding
LanguageEnglish
Published Les Ulis EDP Sciences 01.01.2017
Subjects
Antenna arrays
Cyclotron frequency
Design optimization
Feeding
Ion cyclotron radiation
Scaling laws
Straps
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Summary: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.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/201715703033