Novel methods for cryogenic testing of infrared focal plane arrays in a Co60 radiation environment

Details Novel methods for cryogenic testing of infrared focal plane arrays in a Co60 radiation environment Novel methods for cryogenic testing of infrared focal plane arrays in a Co60 radiation environment

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992spie.1686...65m&link_type=abstract

In: Test and evaluation of IR detectors and arrays II; Proceedings of the Meeting, Orlando, FL, Apr. 22, 23, 1992 (A94-12744 02-

Computer Science

Performance

Focal Plane Devices, Infrared Detectors, Nuclear Radiation, Test Facilities, Cryogenic Equipment, Gamma Rays, Performance Tests, Radiation Dosage

Scientific paper

Co60 sources and test equipment have successfully been integrated to provide total, accumulated gamma dose and debris (delayed) gamma flux testing on a routine basis. Three Co60 sources provide a wide range of testing capabilities and dose rates: (1) one-curie source mated to a custom dewar and blackbody specifically designed for debris gamma testing, (2) a 2200-curie internal irradiator primarily used for discrete component testing, and (3) an 8000-curie Shepherd Cell internal irradiator with custom dewars utilizing graybody IR sources which is capable of complete radiometric characterizations of IR FPAs while being exposed to a wide range of position-selectable gamma fluxes and accommodates both total dose and debris gamma testing. Any of these sources and dewars can be interfaced with customer-specific test equipment, allowing the same test set to be used for clear environment and in-situ radiation testing. This paper describes the radiation sources and their associated dewars, the uses, and the test methodology utilized for testing IR focal plane arrays (FPAs) in the total gamma dose and the debris gamma environments. Examples of test data acquisition and reduction are presented.

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