| 摘要 |
A magnet cooling arrangement 10 has a magnet cooling system 14 in thermal contact with a magnet 12 which provides magnet cooling, and a coolant reclamation circuit 30 for storage and release of boil-off fluid emitted from the magnet cooling system. The reclamation circuit includes a storage tank 32 which is fluidly connected to the magnet cooling system 14, and the boil-off fluid may be a gaseous cryogen which may then be released back into the magnet cooling system 14 when needed. The cooling arrangement may include an arcuate loop 38 between the cooling system and the storage tank, which is configured to reduce natural convection. The magnet cooling system may include a heater 28, a first container 18 arranged to hold liquid cryogen, a second container 22 arranged to hold gaseous cryogen, and a condensing chamber 24 which includes a cryocooler recondensing unit 26. The arcuate loop may be fluidly connected to the condensing chamber such that gaseous coolant is able to flow between the condensing chamber and storage tank, and the tank may be thermally insulated and include a pressure relief valve. The condensing chamber and cryocooler are configured to condense gaseous cryogen into liquid cryogen, and excess gaseous cryogen is received and stored in the storage tank of the reclamation circuit. The cryogen may be helium, hydrogen, neon, or nitrogen.
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