Supercritical helium dewar for the Infrared Background Signature Survey experiment

Gunther Pulkert; Guenter Lange; H. Lieb; Albert Seidel

doi:10.1117/12.23052

1 November 1990 Supercritical helium dewar for the Infrared Background Signature Survey experiment

Gunther Pulkert, Guenter Lange, H. Lieb, Albert Seidel

Proceedings Volume 1340, Cryogenic Optical Systems and Instruments IV; (1990) https://doi.org/10.1117/12.23052
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

A superfluid helium dewar design for operation under supercritical conditions is described. The dewar consists of a 300 1 volume cylinder toroidal tank suspended from the vacuum shell by preloaded GFC chains. Three ventgas cooled radiation shields surround the tank. The optics is mounted to a flange at the He tank being conductively cooled. The optics temperature is allowed to float with the tank temperature going from 4.8 to 10 K while holding the tank pressure constant at 2.8 bar. The focal planes of the IR sensor are actively heated and held at a constant temperature of 10.5 and 14.2 K.

Citation Download Citation

Gunther Pulkert, Guenter Lange, H. Lieb, and Albert Seidel "Supercritical helium dewar for the Infrared Background Signature Survey experiment", Proc. SPIE 1340, Cryogenic Optical Systems and Instruments IV, (1 November 1990); https://doi.org/10.1117/12.23052

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available