Thermal-Structural Coupled Analysis of ITER Torus Cryo-Pump Housing

An ITER torus Cryo-Pump Housing (TCPH), which encloses a torus cryo-pump, is connected to a vacuum vessel (VV) by a set of associated double bellows. There are complicated loads due to two different operating states (pumping and regeneration) and foreseeable accidents with the cryo-pump. This paper describes a thermal-structural coupled analysis of the present TCPH according to the allowable stress criteria of RCC-MR, in which the worst cases and outcomes of various load combinations are obtained. Meanwhile, optimization of the structure has been carried out to obtain positive analysis results and an adequate safety margin.