Title:
SUPERCONDUCTING MAGNET DEVICE, CRYOGENIC FREEZING MACHINE, AND COOLING METHOD FOR SUPERCONDUCTING MAGNET DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/215168
Kind Code:
A1
Abstract:
A superconducting magnet device (10) comprises: a superconducting coil (12); a radiation shield (14) which thermally protects the superconducting coil (12); a main cold head (102) which cools the superconducting coil (12); a sub cold head (104) which cools the radiation shield (14); a shared compressor (106) which supplies coolant gas to the main cold head (102) and the sub cold head (104); a first temperature sensor (40) which measures the temperature of the radiation shield (14); a second temperature sensor (42) which measures the temperature of the superconducting coil (12); and a controller (110) which is configured to start up the sub cold head (104) for initial cooling of the superconducting magnet device (10), stop the sub cold head (104) on the basis of output from the first temperature sensor (40) or the second temperature sensor (42), and cause the main cold head (102) to operate in a state where the sub cold head (104) is stopped.
Inventors:
IKEYA YOICHIRO (JP)
SLOAN R (US)
SLOAN R (US)
Application Number:
PCT/JP2021/011607
Publication Date:
October 28, 2021
Filing Date:
March 22, 2021
Export Citation:
Assignee:
SUMITOMO HEAVY INDUSTRIES (JP)
SUMITOMO SHI CRYOGENICS OF AMERICA INC (US)
SUMITOMO SHI CRYOGENICS OF AMERICA INC (US)
International Classes:
F25B9/00; F25B9/14
Foreign References:
| JPH11304271A | 1999-11-05 | |||
| JP2018084347A | 2018-05-31 | |||
| JPH07283022A | 1995-10-27 | |||
| JPH01125509U | 1989-08-28 | |||
| JP2005123231A | 2005-05-12 | |||
| JP2004233047A | 2004-08-19 |
Attorney, Agent or Firm:
MORISHITA Sakaki (JP)
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