Abstract

A ray tracing code, TRECE, of electron cyclotron resonance heating (ECRH) has been developed for the helical-axis heliotron, Heliotron J. The accurate power absorption profile can be obtained for the three dimensional structure of flux surfaces and magnetic field in Heliotron J. The calculation shows that the launching condition of the 70 GHz ECRH system assures a well localized power deposition.

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