Cryostat

The body of the cryostat is a cylindrical structure of about 14 m diameter. The cryostat vessel has a large top plate shifted upwards to maximize the inner space for the assembly and maintenance of cryogenic devices and connections. The cryostat vessel is made of 30 mm single-walled stainless steel. The skin has a structure to support the weight of all the ports and port plugs and to withstand the vacuum pressure. The vessel is designed according to the "ASME VIII" code.

Large numbers of ducts interconnect the VV ports with the corresponding penetrations in the cryostat vessel and also provde access for maintenance and inspection equipment, pumping, exhaust, in-cryostat feeders, etc. Bellows are integrated in the ducts to compensate for differential movements.

The cryostat base is designed as a robust structure to support the dead weight of superconducting magnets and thermal shield, and the vacuum vessel, including in-vessel components, operational electromagnetic loads, thermal stress during baking and standard operational conditions, and seismic loads.