Accession Number:

ADA188025

Title:

Cryocooler Systems Demonstration.

Descriptive Note:

Final rept. 4 Sep 84-23 Feb 86,

Corporate Author:

TRW SPACE AND TECHNOLOGY GROUP REDONDO BEACH CA

Personal Author(s):

• Sandell, R. D.
• Silver, A. H.

Report Date:

1987-08-31

Pagination or Media Count:

25.0

Abstract:

TRW successfully transferred Stirling-cycle cryocooler technology from its development at NBS to industry. We installed, modified, and operated a small, plastic, five-stage Stirling cycle refrigerator which was developed at the National Bureau of Standards and furnished to TRW for this project. We also designed and fabricated a new gas handling system, pressure wave generator and displacer drive, and fiber-designed, fabricated, and operated a monolithic thin film SQUID gradiometer on a single silicon chip. The cooler was modified by the addition of a 4 kelvin Joule-Thompson stage before delivery to TRW and we initially fabricated this SQUID with a Nb-Pb technology for 4 kelvin experiments. We later transferred to an all-niobium technology developed at TRW when it was decided to operate the cryocooler at about 7 kelvin without the Joule-Thomson stage. We designed, constructed, and installed all components necessary to interface the magnetometer with the silicon printed circuit board which was heat-sunk to the final stage of the cryocooler. Radiation shields were constructed and low noise and low thermal electrical leads were provided.

Descriptors:

• *CRYOGENICS
• *REFRIGERATION SYSTEMS
• *GRADIOMETERS
• CHIPS(ELECTRONICS)
• DEMONSTRATIONS
• ELECTRIC CONNECTORS
• GASES
• HANDLING
• LOW NOISE
• MAGNETOMETERS
• PRINTED CIRCUIT BOARDS
• RADIATION SHIELDING
• SHOCK WAVES
• SILICON
• THERMAL PROPERTIES
• WAVEFORM GENERATORS
• STIRLING CYCLE
• MINIATURE ELECTRICAL EQUIPMENT
• QUANTUM ELECTRONICS
• SUPERCONDUCTORS
• THIN FILMS
• LEAD ALLOYS
• NIOBIUM ALLOYS

Subject Categories:

• Air Conditioning, Heating, Lighting and Ventilating
• Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE