Measured Performance Of The Philips Usfa Stirling Cycle Cooler With Various Dewars.

R J de Putter

doi:10.1117/12.945537

3 October 1988 Measured Performance Of The Philips Usfa Stirling Cycle Cooler With Various Dewars.

R J de Putter

Proceedings Volume 0915, Recent Developments in Infrared Components and Subsystems; (1988) https://doi.org/10.1117/12.945537
Event: Sira/SPIE Infrared Meeting, 1988, London, United Kingdom

Abstract

Philips Usfa BV makes a range of small cryogenic coolers for cooling the sensors of thermal imaging systems. These coolers operate around 80 K and have cooling capacities of 0.25 W, 0.5 W and 1.0 W. The diameters of the "cold fingers" are respectively 5, 7 and 10mm. The standard compressor used at present has a diameter of 71mm and a length of 145mm, and we are currently developing two new compressors : one for the 0.25 W and 0.5 W cold fingers and one for the 1.0 W cold finger. The 1.0 W compressor has a diameter of 60mm and a length of 122mm. The compressor for the 0.25 W and 0.5 W cold fingers is 44mm in diameter and 142mm long. During the last few years a lot of experience has been gained with various cooler-Dewar combinations, one of the most widely used being the 0.5 W type UA 7041 cooler combined with the R185 Mullard Dewar, a TICM class II Dewar containing Sprite detectors. This paper mainly reports on the measured performance of the UA 7041 cooler with this Dewar. It includes : - basic technical principles of the cooler. - typical cooling capacity of the UA 7041. - typical cooling demand of the R185 Dewar. - performance of the UA 7041 - R185 combination. - performance of the UA 7043 - R175 combination. - results of lifetime testing.

Citation Download Citation

R J de Putter "Measured Performance Of The Philips Usfa Stirling Cycle Cooler With Various Dewars.", Proc. SPIE 0915, Recent Developments in Infrared Components and Subsystems, (3 October 1988); https://doi.org/10.1117/12.945537

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