Speaker
Francois Millet
Description
Large unit-capacity cryogenic plants are required to cool at helium temperature high-field superconducting magnets of FCC-hh, high-gradient superconducting RF cavities of FCC-ee as well as for the cooling above 40 K of heavy-loaded FCC-hh beam screens, thermal shields and the HTS current leads. The cooling requirements are challenging with a very large refrigeration capacity up to 3 to 4 times larger than the present state-of-the-art (FCC-hh) and a non-conventional thermal load distribution with very large synchrotron radiation to the beam screens (FCC-hh). The FCC cryogenic system has also to fulfil high-efficiency and high-reliability criteria to minimise the operation cost and to increase the overall availability of the future accelerator complex. Based on the present reference architecture of the FCC cryogenic system and on existing large-capacity cryogenic plants, a preliminary set of specifications for He cycle will be detailed and possible innovations will be outlined.
Author
Francois Millet
