Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8174588 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2015 | 7 Pages |
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.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
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,