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Description
The cryogenic distribution system for the High Intensity Heavy-ion Accelerator Facility (HIAF) under construction at IMP has about 146 m cryogenic transfer lines. These transfer lines will be installed between a distribution box on the surface and the connection valve boxes located 12.3 m underground in the tunnel. The transfer line consists of 28 sections. Due to space limitations the lines may have complex routings and require several angular sections. The lines consist of a vacuum jacket, a thermal screen and five internal helium headers. Specific fixed and sliding supports and compensation systems were devised for each line to allow for thermal contraction of the cryogenic pipes. This paper presents the mechanical design of the multi-channel liquid helium cryogenic transfer lines along with fabrication details.
| Submitters Country | China |
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