Open AccessA continuous dry 300 mK cooler for THz sensing applications
Author(s) -
Georgina M. Klemencic,
P. A. R. Ade,
S. T. Chase,
R. Sudiwala,
Adam L. Woodcraft
Publication year - 2016
Publication title -
review of scientific instruments
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.605
H-Index - 165
eISSN - 1089-7623
pISSN - 0034-6748
DOI - 10.1063/1.4945691
Subject(s) - cryostat , nuclear engineering , head (geology) , materials science , terahertz radiation , sorption , cryogenics , coolant , infrared , environmental science , process engineering , optoelectronics , computer science , thermodynamics , physics , optics , chemistry , superconductivity , condensed matter physics , geology , geomorphology , organic chemistry , adsorption , engineering
We describe and demonstrate the automated operation of a novel cryostat design that is capable of maintaining an unloaded base temperature of less than 300 mK continuously, without the need to recycle the gases within the final cold head, as is the case for conventional single shot sorption pumped (3)He cooling systems. This closed dry system uses only 5 l of (3)He gas, making this an economical alternative to traditional systems where a long hold time is required. During testing, a temperature of 365 mK was maintained with a constant 20 μW load, simulating the cooling requirement of a far infrared camera.
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