Conveners
C3Po1D - Very Low Temperature Aerospace Cryocoolers
- Franklin Miller (University of Wisconsin - Madison)
- Ram Dhuley (Florida State University)
Several astrophysics missions are currently planned, with significant European participations. To reach their targeted performances, cooling down to temperature of 50 or 100 mK, depending on the instrument design is required. Multi stage ADR cooling can provide such performances and is well adapted for space. At the early stage of the mission definition various cryogenics design are considered...
Sorption compressors do not have moving parts and are suitable for driving Joule-Thomson cryocoolers. This allows a complete cryogenic cooling system with the absence of moving parts, which is attractive especially for space applications, as well as for other applications. Sorption compressors are thermally driven, meaning, they operate in heating and cooling cycles. The main drawback of...
Sorption pumped 3He refrigerator systems are a well described method of accessing the ~ 300mK temperature range. However, pulse-tube pre-cooled 3He systems typically also include a pumped 4He refrigerator stage to ensure the efficient condensation of the 3He charge, and a set of heat switches to isolate the sorption pumps during regeneration. Here we show that excellent cryogenic performance...
Operating 6,800 feet underground at the SNOLAB facility in Sudbury, Ontario, Canada, the dilution refrigerator-cooled SuperCDMS experiment has been designed for maximum cryogenic up-time and remote operations. A key element in achieving these goals is a pair cold traps in the helium circulation stream of the dilution refrigerator; the first operating near liquid nitrogen temperatures and the...
