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The thermonuclear fusion experimental reactor will be an intrinsically pulsed machine. The first wall (FW) is the structure that covers about 80 % of the total plasma-facing surface and will receive a cyclic heat flux ranging from a zero value up to some hundred kW/m2. A Thermal Fatigue Test Facility has been designed and built to make a proper simulation of the working environment of the experimental reactor FW as far as the thermal loads are concerned. This apparatus consists of a cylindrical vacuum chamber with diameter 1 m and length 1.2 m; the thermal heat flux is provided by a series of infrared lamps with 240 mm long filament and a maximum power of 4600 W each. The maximum heat flux compatible with a long lamp lifetime is 0.8 MW/m2. This value is sufficient to simulate the thermal loads, including peak loads, to which the FW will be subjected in real operating conditions. Higher fluxes can be obtained at the expense of a shorter lamp life.

Additional information

Authors: MEROLA M, Politecnico di Torino, Dipartimento di Energetica (IT);MATERA R, JRC Karlsruhe (DE)
Bibliographic Reference: Paper presented: Fatigue under Thermal and Mechanical Loading, Petten (NL), May 22-24, 1995
Availability: Available from (1) as Paper EN 39058 ORA
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