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Switzer, E. R.; Ade, P. A. R.; Baildon, T.; Benford, D.; Bennett, C. L.; Chuss, D. T.; Datta, R.; Eimer, J. R.; Fixsen, D. J.; Gandilo, N. N.; Essinger-Hileman, T. M.; Halpern, M.; Hilton, G.; Irwin, K.; Jhabvala, C.; Kimball, M.; Kogut, A.; Lazear, J.; Lowe, L. N.; McMahon, J. J.; Miller, T. M.; Mirel, P.; Moseley, S. H.; Pawlyk, S.; [...]

Sub-Kelvin cooling for two kilopixel bolometer arrays in the PIPER receiver

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  • Media type: E-Article
  • Title: Sub-Kelvin cooling for two kilopixel bolometer arrays in the PIPER receiver
  • Contributor: Switzer, E. R.; Ade, P. A. R.; Baildon, T.; Benford, D.; Bennett, C. L.; Chuss, D. T.; Datta, R.; Eimer, J. R.; Fixsen, D. J.; Gandilo, N. N.; Essinger-Hileman, T. M.; Halpern, M.; Hilton, G.; Irwin, K.; Jhabvala, C.; Kimball, M.; Kogut, A.; Lazear, J.; Lowe, L. N.; McMahon, J. J.; Miller, T. M.; Mirel, P.; Moseley, S. H.; Pawlyk, S.; [...]
  • imprint: AIP Publishing, 2019
  • Published in: Review of Scientific Instruments
  • Language: English
  • DOI: 10.1063/1.5108649
  • ISSN: 0034-6748; 1089-7623
  • Origination:
  • Footnote:
  • Description: <jats:p>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 32 × 40 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 and 130 mK and provides ≈10 μW 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 flightlike integrated receiver testing, and practical considerations for implementation in the balloon float environment.</jats:p>