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Liquid helium vibration cryostat for space qualification tests

✍ Scribed by H.-D. Denner; U. Ruppert; T. Sutter; Z. Szücs

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
248 KB
Volume
30
Category
Article
ISSN
0011-2275

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✦ Synopsis

A continuous flow, liquid helium cooled vibration cryostat with a useful cold space of 200 mm diameter and 160 mm height is described. The cryostat (weight 9 kg) is attached to the armature of a vibration magnet. Cool-down to 4.2 K takes ~ 15 rain and warm-up 1 h. The vacuum jacket and radiation shields can be removed so that samples can easily be exchanged. The vibration transfer of the cryostat is quite flat up to 600 Hz. The performance of the cryostat has been verified up to a level of 25 g (r.m.s.) in the random mode and up to 30g (O-p) in the sinusoidal mode. A number of infrared filters and polarizers for the ISOPHOT experiment, an active phase separator and certain cryomotors have already been successfully tested.

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