Device for cooling a SQUID measuring instrument

Details Device for cooling a SQUID measuring instrument Device for cooling a SQUID measuring instrument

1991-06-24

1993-03-16

Bennet, Henry A.

Refrigeration

Storage of solidified or liquified gas

Including cryostat

62 501, 62 507, 324248, 505 1, 505888, 505899, G01R 3302, F25B 1900

Patent

active

051933489

ABSTRACT:
A device for cooling a SQUID measuring instrument for measuring biomagnetic or other weak magnetic fields includes a cryostat containing a vacuum in an interior space. At least one superconducting gradiomeer and at least one associated SQUID are disposed in the vacuum. Heat-conducting connections thermally couple the superconducting gradiometer and the associated SQUID to a cryogen supplied from outside the cryostat. A carrier structure supports the SQUID and the gradiometer. The carrier structure has cooling channels through which the cryogen is forced. A cryogen supply unit is situated outside the cryostat and a cryogen transfer line couples the cryogen supply unit to the cooling channels.

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