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

PDF Url : ADA188025

Report Date : 31 Aug 1987

Pagination or Media Count : 25

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 Condition, Heating, Lighting & Ventilating
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE