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Journal Articles

Development of cold isostatic pressing graphite module for a heat-resistant lower hybrid current drive antenna

Maebara, Sunao; Goniche, M.*; Kazarian, F.*; Seki, Masami; Ikeda, Yoshitaka; Imai, Tsuyoshi*; Beaumont, B.*

Review of Scientific Instruments, 76(5), p.053501_1 - 053501_7, 2005/05

https://doi.org/10.1063/1.1891465
 Times Cited Count：1 Percentile：10.09(Instruments & Instrumentation)

Development of a plasma facing module using Cold Isostatic Pressing Graphite (CIPG) had been done for a heat-resistant LHCD antenna. A thin stainless film (10$$mu$$m), molybdenum film (10$$mu$$m) and copper film (50$$mu$$m) are laid to overlap each other on the CIPG materials, the CIPG surfaces were successfully coated with copper layer by diffusion bonding method. This module has four waveguides and a water cooling channel, the length is 206 mm. High power long pulse operation was successfully achieved up to 250 kW (125 MW/m$$^{2}$$)/700s. The module has been successfully tested at a RF power density which is equivalent, in terms of RF electric field (5kV/cm), to the one proposed for the LHCD antenna of ITER-FEAT. The outgassing rate of the copper-coated CIPG is estimated to be 3.2-5.1$$times$$10$$^{-6}$$ Pa.m$$^{3}$$/s.m$$^{2}$$ at 100$$^{circ}$$C, it is assessed that a pumping system is not required to evacuate the pressure in the LHCD antenna.

JAEA Reports

Performance test of lower hybrid waveguide under long/high-RF power transmission

Seki, Masami; Obara, Kenjiro; Maebara, Sunao; Ikeda, Yoshitaka; Imai, Tsuyoshi; Nagashima, Takashi; Goniche, M.*; J.Brossaud*; C.Barral*; G.Berger-By*; et al.

JAERI-Research 96-025, 55 Pages, 1996/06

JAERI-Research-96-025.pdf:2.06MB

no abstracts in English

Journal Articles

Outgassing of the lower hybrid current drive antenna on JT-60U

Maebara, Sunao; Seki, Masami; Suganuma, Kazuaki; Ikeda, Yoshitaka

Fusion Engineering and Design, 30, p.253 - 259, 1995/00

https://doi.org/10.1016/0920-3796(94)00409-Z
 Times Cited Count：2 Percentile：28.04(Nuclear Science & Technology)

no abstracts in English

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