Low noise cryogenic apparatus for making magnetic measurements

Apparatus for performing sensitive magnetic measurements using cryogenically cooled instrumentation, wherein the instrumentation is separated from the bubbles present in a cryogenic cooling fluid. In one embodiment, the magnetic measurement instrumentation is placed in a tail piece joined by heat co...

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Bibliographic Details
Main Author PAULSON; DOUGLAS N
Format Patent
LanguageEnglish
Published 02.05.1989
Edition4
Subjects
BLASTING
DIAGNOSIS
FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES
FIXED-CAPACITY GAS-HOLDERS
HEATING
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
LIGHTING
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
MECHANICAL ENGINEERING
MEDICAL OR VETERINARY SCIENCE
PHYSICS
STORING OF DISTRIBUTING GASES OR LIQUIDS
SURGERY
TESTING
VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES
WEAPONS
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Summary:Apparatus for performing sensitive magnetic measurements using cryogenically cooled instrumentation, wherein the instrumentation is separated from the bubbles present in a cryogenic cooling fluid. In one embodiment, the magnetic measurement instrumentation is placed in a tail piece joined by heat conducting bolts to a dewar containing a cryogenic fluid, and heat from the instrumentation is conducted to the cryogenic fluid heat sink by metallic strips reaching to the bolts. The cryogenic fluid does not contact the instrumentation directly, resulting in a significantly reduced level of noise in the instrumentation. The tail piece may also be evacuated to avoid pressure and temperature variations that may cause noise and affect the magnetic instrumentation.
Bibliography:Application Number: US19870037030