1. Sub-Kelvin cooling for two kilopixel bolometer arrays in the PIPER receiver
- Author
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Samelys Rodriguez, Natalie N. Gandilo, Charles L. Bennett, Rahul Datta, Dale J. Fixsen, Joseph Eimer, Samuel H. Moseley, Dan Sullivan, S. Pawlyk, Timothy M. Miller, J. Lazear, Alan J. Kogut, Dominic J. Benford, Kent D. Irwin, Edward J. Wollack, Mark O. Kimball, L. Lowe, Mark Halpern, David T. Chuss, Eric R. Switzer, Thomas Essinger-Hileman, A. Walts, Peter Taraschi, Taylor Baildon, Carole Tucker, Johannes Staguhn, Peter A. R. Ade, Paul Mirel, Christine A. Jhabvala, Peter Shirron, Gene C. Hilton, Jeff McMahon, and Elmer Sharp
- Subjects
Physics ,business.industry ,Gravitational wave ,Liquid helium ,Detector ,Bolometer ,Astrophysics::Instrumentation and Methods for Astrophysics ,Refrigerator car ,FOS: Physical sciences ,law.invention ,Telescope ,Optics ,law ,Electronics ,Astrophysics - Instrumentation and Methods for Astrophysics ,business ,Adiabatic process ,Instrumentation and Methods for Astrophysics (astro-ph.IM) ,Instrumentation - 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., Comment: 14 pages, 12 figures
- Published
- 2019
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