A 4-Kelvin Pulse-Tube/Reverse-Brayton Hybrid Cryocooler

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNC06CB18C
Agency Tracking Number: 053293
Amount: $69,728.00
Phase: Phase I
Program: SBIR
Awards Year: 2006
Solicitation Year: 2005
Solicitation Topic Code: S4.03
Solicitation Number: N/A
Small Business Information
1367 Camino Robles Way, San Jose, CA, 95120-4925
DUNS: 938515913
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 James Maddocks
 Principal Investigator
 (608) 265-4246
 maddocks@cae.wisc.edu
Business Contact
 Ali Kashani
Title: Program Director
Phone: (408) 507-0906
Email: akashani@atlasscientific.com
Research Institution
N/A
Abstract
NASA's ability to perform cutting edge space science, including lunar and planetary exploration, requires the use of cryogenically cooled detectors and sensors for advanced scientific instruments and telescopes. For example, to improve the signal-to-noise ratio of cryogenic IR focal plane arrays it is desirable to have on-focal plane, high-resolution, analog-to-digital data converters. Such A/D converters and supporting technology are currently in various stages of development. These and other detectors and sensors will require improvements in cryogenic system technology, including the development of lightweight, low vibration, highly-efficient, long-life cryocoolers if their useful lifetime is to be extended beyond a couple of years. To address these requirements, Atlas Scientific proposes to develop a 4K cryocooler that combines the efficiency of a recuperative, reverse-Brayton, low-temperature stage with the simplicity of a regenerative, pulse-tube, upper stage. The PT/RB hybrid is an innovative cooling system capable of achieving temperatures in the range of 4 to 10 K and is ideally suited to the requirements of many future space-based applications. The hybrid system addresses the issues of cryocooler vibration, reliability, and efficiency, while simultaneously providing an innovative approach to the challenge of interfacing a cryocooler with low-temperature detectors, sensors, and electronics.

* Information listed above is at the time of submission. *

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