TY - JOUR
T1 - Development of a lowerature germanium detector via mechanical cooling with a compact pulse-tube refrigerator
AU - Koike, T.
AU - Chiga, N.
AU - Haruyama, T.
AU - Hosomi, K.
AU - Ichinohe, H.
AU - Kasami, K.
AU - Matsushita, T.
AU - Mizoguchi, Y.
AU - Ono, H.
AU - Shirotori, K.
AU - Takeuchi, T.
AU - Tamura, H.
AU - Yamamoto, T. O.
N1 - Funding Information:
The machine shop in the Graduate School of Science at Tohoku University is greatly thanked for its support and production of various parts. Careful reading of the manuscript and comments by Dr. C. J. Chiara are greatly appreciated. This study is supported by Basic Research ( 17070001 , 23244043 , 24105003 ) of Grant-in-Aid from the MEXT, Japan.
Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.
PY - 2015/1/11
Y1 - 2015/1/11
N2 - 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.
AB - 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.
KW - Gamma-ray spectroscopy
KW - Germanium detector
KW - Hypernucleus
KW - Pulse-tube refrigerator
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U2 - 10.1016/j.nima.2014.09.084
DO - 10.1016/j.nima.2014.09.084
M3 - Article
AN - SCOPUS:84908426292
SN - 0168-9002
VL - 770
SP - 1
EP - 7
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
ER -