A long duration cryostat suitable for balloon borne photometry

Authors
Masi, S Cardoni, P de Bernardis, P Piacentini, F Raccanelli, A Scaramuzzi, F
Citation
S. Masi et al., A long duration cryostat suitable for balloon borne photometry, CRYOGENICS, 39(3), 1999, pp. 217-224
Citations number
22
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Mechanical Engineering
Journal title
CRYOGENICS
ISSN journal
00112275 → ACNP
Volume
39
Issue
3
Year of publication
1999
Pages
217 - 224
Database
ISI
SICI code
0011-2275(199903)39:3<217:ALDCSF>2.0.ZU;2-M
Abstract
We describe a He-4 cryostat suitable for cooling a large (about 50 1 in vol ume) multiband bolometric photometer for;mm-waves. The cryostat features tw o large optical windows and a hold time longer than 2 weeks. The long hold time has been obtained using a 20 K vapour cooled shield for the liquid hel ium tank and superinsulation for the nitrogen tank. The tanks are supported by kevlar cords. The cryostat has been optimized for operation on long dur ation stratospheric balloon flights, and has been tested successfully at gr ound level and on two short balloon flights. (C) 1999 Elsevier Science Ltd. All rights reserved.