Mechanically-cooled germanium detector using two stirling refrigerators

Conference · Tue Dec 31 00:00:00 EST 1996

OSTI ID:513056

Katagiri, Masaki; Kobayashi, Yoshii ^[1]; Takahashi, Koji ^[2]

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1. Japan Atomic Energy Research Inst., Ibaraki-ken (Japan)
2. Seiko EG & G Co. Ltd., Chiba-ken (Japan)

In this paper, we present a developed mechanically-cooled germanium gamma-ray detector using Stirling refrigerators. Two Stirling refrigerators having cooling faculty of 1.5W at 80K were used to cool down a germanium detector element to 77K instead of a dewar containing liquid nitrogen. An 145cm{sup 3} (56.0mmf x 59.1 mml) closed-end Ge(I) detector having relative detection efficiency of 29.4% was attached at the refrigerators. The size of the detector was 60cml x 15cmh x 15cmw. The lowest cooling temperature, 70K was obtained after 8 hours operation. The energy resolutions for 1.33MeV gamma-rays and for pulser signals were 2.43keV and 1.84keV at an amplifier shaping time of 2{mu}sec, respectively.

• OSTI ID: 513056
• Report Number(s): CONF-961123-; TRN: 97:014108
• Resource Relation: Conference: Institute of Electrical and Electronic Engineers (IEEE) nuclear science symposium and medical imaging conference, Anaheim, CA (United States), 2-9 Nov 1996; Other Information: PBD: 1996; Related Information: Is Part Of 1996 IEEE nuclear science symposium - conference record. Volumes 1, 2 and 3; Del Guerra, A. [ed.]; PB: 2138 p.
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
GE SEMICONDUCTOR DETECTORS
GAMMA DETECTION
REFRIGERATION
DESIGN
STIRLING CYCLE
ENERGY RESOLUTION
GAMMA SPECTROMETERS
TEMPERATURE DEPENDENCE