Open AccessJDry-100-ASTRA, a cryogen-free 3He–4He dilution refrigerator for ground-based Cosmic Microwave Background astronomy
Author(s) -
Vladimir Shvarts,
Zhibo Zhao,
M. Jirmanus,
R. Battiston,
M. Calvo,
P. de Bernardis,
M. De Petris,
C. Giordano,
S. Masi,
R. Mezzena
Publication year - 2012
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/400/5/052033
Subject(s) - cryostat , dilution refrigerator , cosmic microwave background , cryogenics , telescope , observatory , bolometer , refrigerator car , astra , physics , mechanical engineering , aerospace engineering , nuclear engineering , astronomy , astrophysics , engineering , optics , nuclear physics , thermodynamics , detector , superconductivity , quantum mechanics , anisotropy
A new custom cryogen-free dilution refrigerator with base temperature of 17 mK and cooling power of 120 μW@100mK was developed in collaboration with the University of Roma, Italy; and Janis Research Company, Inc. (USA). The design is specifically geared for integrating with an existing telescope on alt-azimuth mount. The first lab-based test results show that the system is maintaining its design specifications in its tilted position up to as much as -20 degree and +50 degree from the cryostat vertical axis. © Published under licence by IOP Publishing Ltd