Development of plasma facing component for LHCD antenna

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• 作者：Maebara ; Sunao ; Seki ; Masami ; Ikeda ; Yoshitaka ; Suzuki ; Satoshi ; Yokoyama ; Kenji ; Suganuma ; Kazuaki ; et. al.
• 刊名：Fusion Engineering and Design
• 出版年：1998
• 出版时间：September 1, 1998
• 年：1998
• 卷：39-40
• 期：Complete
• 页码：355-361
• 全文大小：483 K

文摘

A mock-up module of an antenna tip made of carbon fiber composite (CFC) was fabricated for the development of a heat-resistive front of the lower hybrid current drive (LHCD) antenna. The CFC surface was coated with a thin Ti layer and was plated with Cu. The mock-up module has three waveguides and is designed to simulate the front tip of the 8 GHz LHCD antenna. The module has an active water cooling channel and the length is 200 mm, the mouth dimension is 19.5×50 mm². The mock-up module was tested with heat fluxes up to 20 MW m⁻² due to electron beam irradiation. No damage of the waveguide mouth was observed up to the heat flux of 3.2 MW m⁻² for 2 min, though a maximum temperature of 762°C was measured at the septum plate. The obtained heat load of 3.2 MW m⁻² is about 10 times higher than the steady-state surface-averaged heat load of the first wall required in the ITER design.