Sub-Kelvin cooling for two kilopixel bolometer arrays in the PIPER receiver
arXiv:1909.06440 · doi:10.1063/1.5108649
Abstract
The Primordial Inflation Polarization Explorer (PIPER) is a balloon-borne telescope mission to search for inflationary gravitational waves from the early universe. PIPER employs two 32x40 arrays of superconducting transition-edge sensors, which operate at 100 mK. An open bucket dewar of liquid helium maintains the receiver and telescope optics at 1.7 K. We describe the thermal design of the receiver and sub-kelvin cooling with a continuous adiabatic demagnetization refrigerator (CADR). The CADR operates between 70-130 mK and provides ~10 uW cooling power at 100 mK, nearly five times the loading of the two detector assemblies. We describe electronics and software to robustly control the CADR, overall CADR performance in flight-like integrated receiver testing, and practical considerations for implementation in the balloon float environment.
14 pages, 12 figures
References in corpus (1)
Cited by in corpus (4)
- The Experiment for Cryogenic Large-aperture Intensity Mapping (EXCLAIM)
- Anti-reflection Coated Vacuum Window for the Primordial Inflation Polarization ExploreR (PIPER) balloon-borne instrument
- Superfluid Liquid Helium Control for the Primordial Inflation Polarization Explorer Balloon Payload
- Superfluid-tight cryogenic receiver with continuous sub-Kelvin cooling for EXCLAIM