Mechanically-cooled germanium detector using two Stirling refrigerators

Author

Katagiri, Masaki ; Kobayashi, Yoshii ; Takahashi, Koji

Author_Institution

JAERI, Ibaraki, Japan

Volume

1

fYear

1996

fDate

2-9 Nov 1996

Firstpage

619

Abstract

In this paper, we present a developed mechanically-cooled germanium gamma-ray detector using Stirling refrigerators. Two Stirling refrigerators having cooling faculty of 1.5 W at 80 K were used to cool down a germanium detector element to 77 K instead of a dewar containing liquid nitrogen. An 145 cm³ (56.0 mmf×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 60 cml×15 cmh×15 cmw. The lowest cooling temperature, 70 K was obtained after 8 hours operation. The energy resolutions for 1.33 MeV gamma-rays and for pulser signals were 2.43 keV and 1.84 keV at an amplifier shaping time of 2 μsec, respectively

Keywords

gamma-ray detection; germanium radiation detectors; refrigerators; 1.33 MeV; 1.5 W; 15 cm; 56 mm; 59.1 mm; 60 cm; 70 K; 77 K; 8 h; 80 K; Ge; Stirling refrigerators; energy resolutions; gamma-ray detector; mechanically-cooled Ge detector; Electronics cooling; Energy resolution; Gamma ray detection; Gamma ray detectors; Germanium; Nitrogen; Noise reduction; Pulse amplifiers; Refrigerators; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium, 1996. Conference Record., 1996 IEEE

Conference_Location

Anaheim, CA

ISSN

1082-3654

Print_ISBN

0-7803-3534-1

Type

conf

DOI

10.1109/NSSMIC.1996.591076

Filename

591076