Cryogenic magnet systems

Details Cryogenic magnet systems Cryogenic magnet systems

1984-02-10

1985-08-27

Capossela, Ronald C.

Refrigeration

Using electrical or magnetic effect

Thermoelectric; e.g., peltier effect

62 45, 62514R, F25B 2102

Patent

active

045370338

ABSTRACT:
Improved cryogenic magnet systems for use in NMR imaging devices comprising an electro-magnet immersed in a first tank containing a first liquid gas, the first tank located in a container evacuated to a high vacuum, a refrigerating system external to said container, and coupling means for coupling a cold head of the refrigerating system to radiation shielding means surrounding said first tank for lowering the temperature of the shielding means to thereby reduce boil-off of said liquid gas.

REFERENCES:
patent: 3358463 (1967-12-01), Hawkins et al.
patent: 3358472 (1967-12-01), Klipping
patent: 3518591 (1970-06-01), Zar
patent: 3611746 (1971-10-01), Marsing et al.
patent: 4291541 (1981-09-01), Kneip, Jr. et al.

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