Development of a lowerature germanium detector via mechanical cooling with a compact pulse-tube refrigerator

T. Koike, N. Chiga, T. Haruyama, K. Hosomi, H. Ichinohe, K. Kasami, T. Matsushita, Y. Mizoguchi, H. Ono, K. Shirotori, T. Takeuchi, H. Tamura, T. O. Yamamoto

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We have developed a new germanium (Ge) detector unit for hypernuclear γ-ray spectroscopy at J-PARC, which comprises a new Ge detector array Hyperball-J. A compact pulse-tube refrigerator is coupled to a coaxial Ge detector in order to achieve lower crystal temperatures as a means to increase radiation hardness. The obtained crystal temperature is 72 K, while an energy resolution is maintained at (FWHM) 3.1(1) keV for 1.33 MeV γ rays using a gate-integrated shaping amplifier (ORTEC 973U). Gain shifts with changing crystal temperature are also confirmed for the Ge detector.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume770
DOIs
Publication statusPublished - 2015 Jan 11

Keywords

  • Gamma-ray spectroscopy
  • Germanium detector
  • Hypernucleus
  • Pulse-tube refrigerator

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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