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Abstract

The large number of operating cycles and the high erosion rate envisaged for the next generation of experimental Tokamak reactors are likely to cause a severe problem of thermal fatigue on the first wall. A lifetime analysis presented at this conference confirms that the combined effect of plasma - wall interactions and cyclic operation of the machine will limit the allowable integrated wall load even if the effect of neutron radiation of the structural material is neglected. To check the validity of this analysis a number of thermal fatigue test facilities have been or are being set up with the aim of reproducing as closely as possible the cyclic thermal load, the mechanical load due to the pressure of the cooling fluid and the thermomechanical effects of plasma disruption, on laboratory scale structures, representative of the first wall component.The test programme is specifically devoted to the problems which have arisen from the conceptual studies of NET/INTOR. At present there are three such facilities in different stages of development, TFTF5 (the number indicates the power rating in KW) already in operation, TFTF24 which is being finally checked before operation, and TFTF126 which is planned to be ready next year.

Additional information

Authors: MATERA R, JRC ISPRA ESTAB. (ITALY);CERRAI G, JRC ISPRA ESTAB. (ITALY);BOTTI S JRC ISPRA ESTAB. (ITALY), JRC ISPRA ESTAB. (ITALY)
Bibliographic Reference: 13TH SYMPOSIUM ON FUSION TECHNOLOGY, VARESE (ITALY), SEPT. 24-28, 1984 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 31737 ORA
Availability: Can be ordered online
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