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Takahashi, Koji; Kajiwara, Ken; Oda, Yasuhisa; Kasugai, Atsushi; Kobayashi, Noriyuki*; Sakamoto, Keishi; Doane, J.*; Olstad, R.*; Henderson, M.*
Review of Scientific Instruments, 82(6), p.063506_1 - 063506_7, 2011/06
Times Cited Count:19 Percentile:63.9(Instruments & Instrumentation)High power, long pulse millimeter (mm) wave experiments of the RF test stand (RFTS) of JAEA were performed. The system consists of a 1 MW/170 GHz gyrotron, a long and short distance transmission line (TL) and an equatorial launcher (EL) mock-up. The RFTS has an ITER-relevant configuration, i.e., that is consisted by a 1 MW-170 GHz gyrotron, mm wave TL and EL mock-up. The TL is composed of a matching optics unit, evacuated circular corrugated waveguides, 6 miter bends, an in-line waveguide switch, an isolation valve. The Gaussian-like beam radiation with the steering capability of 20-40 from the EL mock-up was also successfully proved. The high power long pulse power transmission test was conducted with the metallic load replaced by the EL mock-up, and the transmission of 1 MW/800 s and 0.5 MW/1000 sec were successfully demonstrated with no arcing and no damages. The transmission efficiency of the TL was 96%. The results prove the feasibility of the ITER electron cyclotron heating and current drive system.
Callis, R. W.*; Doane, J. L.*; Grunloh, H. J.*; Kajiwara, Ken; Kasugai, Atsushi; Moeller, C. P.*; Oda, Yasuhisa; Olstad, R. A.*; Sakamoto, Keishi; Takahashi, Koji
Fusion Engineering and Design, 84(2-6), p.526 - 529, 2009/06
Times Cited Count:14 Percentile:66.87(Nuclear Science & Technology)