Conveners
C4Or1A - Aerospace Cryocoolers III
- Ted Conrad (FLIR Systems)
- Amir Jahromi (NASA/GSFC)
The cryogenics group at NASA’s Goddard Space Flight Center has a long-standing development and test program for laboratory and space-flight adiabatic demagnetization refrigerators (ADRs). These devices are used to cool components to temperatures as low as 0.05 K. At such low temperatures the ADR systems can provide a few micro-Watts of cooling power, so it is important to minimize the...
The cryogenics and fluids branch at NASA’s Goddard Space Flight Center is currently developing a high-efficiency, vibration-free, flight-worthy Continuous Adiabatic Demagnetization Refrigerator (CADR) that consist of two modular units: one that lifts ~6 microW at 50 mK while rejecting its heat to a 4 K thermal sink, and another unit that provides a constant 4 K cooling stage while rejecting...
A solution for a “vibration-free” Joule-Thomson cooler using a sorption compressor is presented to answer the needs of potential future Earth Observation IR missions with low micro-vibration levels requirements from the European Space Agency.
The adopted solution includes a closed cycle J-T cooler, using nitrogen as working fluid with an expected cooling power of $1.5$ W @ $80$ K. The fluid...
We describe the design and testing of the Cryogenic Flex Cable (CFC) delivered for the Near-Infrared Spectro-Photometer (NISP) instrument for the ESA Euclid mission. The Euclid spacecraft is scheduled for launch in the summer of 2022. It will observe ~1/3 of the total sky using a telescope with 1.2m SiC primary mirror, passively cooled to ~125K, and containing Visible Imager (VIS) and NISP...
A high Technology Readiness Level cryocooler with significant cooling in the 2K to 4K regime will enable a variety of missions ranging from large infrared space telescopes to superconducting and quantum applications. The cryocooler for the MIRI instrument on JWST was designed for operation at 6K, and with relatively minor changes this design can achieve significant lift in the 2K to 4K region....
