NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Low-Thermal Conductivity Suspensions Used in the Isolation of the Salt Pills Aboard the Astro-H Adiabatic Demagnetization RefrigeratorAn adiabatic demagnetization refrigerator (ADR) utilizes the magnetocholoric effect in a paramagnetic salt to produce sub-Kelvin temperatures. It is a solid-state device that has no moving parts and does not rely upon a density gradient in a working fluid. This makes it ideal for cooling space-based instruments. ·Typically the salt is enclosed in a cylindrical pill that is suspended within the bore of a magnet. The suspension between the salt pill and magnet must be robust enough to survive a launch yet have a thermal conductance that minimizes heat from the magnet that is mechanically, and thermally, anchored to a stage at a higher temperature. Here we detail such a design that uses Kevlar(Trade Mark) as the supporting media in a system that limits motion of the salt pill axial as well as laterally with respect to the magnet bore.
Document ID
20180001161
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
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)
Wegel, Donald C. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
James, Bryan L. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Galassi, Nicholas M. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Faulkner, Richard L. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
San Sebastian, Marcelino (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
February 13, 2018
Publication Date
June 13, 2011
Subject Category
Engineering (General)
Report/Patent Number
LEGNEW-OLDGSFC-GSFC-LN-1185
Meeting Information
Meeting: CEC-ICMC 2011
Location: Spokane, WA
Country: United States
Start Date: June 13, 2011
End Date: June 17, 2011
Sponsors: Army Communications-Electronics Command
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available