Pulse-tube dilution refrigeration below 10 mK for AstrophysicsReport as inadecuate




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1 NEEL - Institut Néel 2 UBT - Ultra-basses températures NEEL - Institut Néel 3 ALIS - Achat magasin, Liquéfacteur, Infrastructures, Sécurité NEEL - Institut Néel 4 ALAT - Air Liquide Advanced Technologies Sassenage

Abstract : Astroparticle bolometric detectors often rely on the use of dilution refrigerators providing a large cooling power at millikelvin temperatures.
Conventional machines, however, need a systematic supply of cryogenic fluids, complicating and making more expensive their operation, particularly in underground laboratories.
We describe here novel cryogen-free dilution units, able to cool down large detectors to millikelvin temperatures, and where cooling and warming times have been optimised.


Keywords : Cryogenic techniques dilution refrigerator pulse-tube refrigerator detectors astroparticles





Author: Thomas Prouve - Henri Godfrin - Christian Gianese - Sebastien Triqueneaux - Alain Ravex -

Source: https://hal.archives-ouvertes.fr/



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