Cryogenic cooler for photoconductive cells

Patent · Tue Feb 26 04:00:00 EST 1985

OSTI ID:5618652

Gaskin, V R; Horvath, E P; Jansson, R M

Resolution and sensitivity of photoconducting light sensitive devices vary inversely with temperature. Hence it is desirable to provide cooling means for photoconductive radiation detectors. One type of low temperature photoconductor is fabricated by placing the photomultiplier tube in a double-walled vacuum Dewar flask. In another type, the detector is mounted near a cryogenic projection, or cold finger, emenating from a refrigerator. In this case fabrication is critical, and great care must be exercised when the cryogenic cold finger is inserted in the Dewar well in order to avoid breakage. A different solution herein to the problem provides detector not as prior devices to breakage of the Dewar detector wall.

• Assignee: The United States of America as represented by the Secretary of the Army
• Patent Number(s): US 4501131
• OSTI ID: 5618652
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
440101 -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CONTAINERS
COOLING
CRYOGENICS
DEWARS
HEAT EXCHANGERS
MEASURING INSTRUMENTS
PHOTOCONDUCTORS
RADIATION DETECTORS
TEMPERATURE DEPENDENCE