NIFS-MEMO-13

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Author(s):

ͺ塢ĿˡǷз顢罤
Y. Kubota, S. Noda, A. Sagara, N. Inoue, K. Akaishi, O. Motojima

Title:

ץ饺иγȯѹǮٻACT
"Electron Beam Irradiation Test Facility for Research and Development of PlasmaFacing Components"

Date of publication:

Mar. 1994

Key words:

LHD, divertor, ACT, brazed component, heat flux, carbon, graphite, active cooling, electron beam

Abstract:

To develop a reliable divertor plate for large helical device(LHD), a test facility called ACT(Active Cooling Teststand) has been constructed in Toki site. The facility can generate 100 kW electron beams with beam energy of 30keV as a heat source, which can irradiate with a heat flux of up to 100 MW/m^2 to a test sample piece steadily. The beam irradiation area on the sample can be changed from 1 to 400 cm^2 with a 64 step controller electrically By using the ACT, the thermal fatigue tests of various kinds of carbon-copper brazed components are being performed under the heat loads of 2.5-14 MW/m^2. The test results show that several brazed components are applicable as the divertor plates for the first stage of LHD operation, namely with maximum heat load of 10 MW/m^2 for 5 seconds discharge durations.

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