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PIPER Continuous Adiabatic Demagnetization RefrigeratorWe report upon the development and testing of a 4-stage adiabatic demagnetization refrigerator (ADR) capable of continuous cooling at 0.100 Kelvin. This cooler is being built to cool the detector array aboard NASA's Primordial Inflation Polarization Explorer (PIPER) observatory. The goal of this balloon mission is to measure the primordial gravitational waves that should exist if the theory of cosmological inflation is correct. At altitude, the ADR will hold the array of transition-edge sensors at 100 mK continuously while periodically rejecting heat to a 1.2 K pumped helium bath. During testing on ground, the array is held at the same temperature but heat is rejected to a 4.2 K helium bath indicating the flexibility in this coolers design.
Document ID
20170006477
Acquisition Source
Goddard Space Flight Center
Document Type
Presentation
Authors
Kimball, Mark O.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Shirron, Peter J.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Canavan, Edgar R.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
James, Bryan L.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Sampson, Michael A.
(Stinger Ghaffarian Technologies, Inc. Greenbelt, MD, United States)
Letmate, Richard V.
(Atair Aerospace Brooklyn, NY, United States)
Date Acquired
July 11, 2017
Publication Date
July 5, 2017
Subject Category
Fluid Mechanics And Thermodynamics
Report/Patent Number
GSFC-E-DAA-TN43944
Meeting Information
Meeting: Space Cryogenics Workshop
Location: Oak Brook, IL
Country: United States
Start Date: July 5, 2017
End Date: July 7, 2017
Sponsors: Cryogenic Society of America, Inc., NASA Headquarters
Funding Number(s)
CONTRACT_GRANT: NNG15CR64C
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Magnetic Cooling Sub-Kelvin ADR
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