Elena Aprile, Ran Budnik, Bin Choi, Hugo Contreras, Karl Giboni, Luke Goetzke, Rafael Lang, Kyungeun Lim, Antonio melgarejo, Petr Shagin
We have developed an efficient cryogenic system with heat exchange and associated gas purification system, as a prototype for the XENON1T experiment. The XENON1T detector will use about 3 ton of liquid xenon (LXe) at a temperature of 175K as target and detection medium for a dark matter search. In this paper we report results on the cryogenic system performance focusing on the dynamics of the gas circulation-purification through a heated getter, at flow rates above 50 Standard Liter per Minute (SLPM). A maximum flow of 114 SLPM has been achieved, and using two heat exchangers in parallel, a heat exchange efficiency better than 96% has been measured.
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http://arxiv.org/abs/1208.2001
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