Development of a low-background HPGe detector at Kamioka Observatory

K. Ichimura; H. Ikeda; Y. Kishimoto; M. Kurasawa; A. A. Suzuki; Y. Gando; M. Ikeda; K. Hosokawa; H. Sekiya; H. Ito; A. Minamino; S. Suzuki

doi:10.1093/ptep/ptad136

Development of a low-background HPGe detector at Kamioka Observatory

Instrumentation and Detectors 2023-12-05 v2

Authors: K. Ichimura , H. Ikeda , Y. Kishimoto , M. Kurasawa , A. A. Suzuki , Y. Gando , M. Ikeda , K. Hosokawa , H. Sekiya , H. Ito , A. Minamino , S. Suzuki

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Abstract

A new ultra-low background high-purity germanium (HPGe) detector has been installed at the Kamioka underground experimental site. The background count rate in the energy range from 40 keV to 2700 keV is about 25% lower than that of the first HPGe detector installed in 2016, which has the same detector specification and similar shielding geometry. This paper describes the shielding configuration, including the cleaning of the material surface, the comparison of calibration data and simulation, the time variation of the background spectra, the sample measurement procedure, and some results of the radioactivity in the selected samples.

Keywords

hpge detector low background kamioka observatory shielding radioactivity underground experiment

Cite

@article{arxiv.2308.05302,
  title  = {Development of a low-background HPGe detector at Kamioka Observatory},
  author = {K. Ichimura and H. Ikeda and Y. Kishimoto and M. Kurasawa and A. A. Suzuki and Y. Gando and M. Ikeda and K. Hosokawa and H. Sekiya and H. Ito and A. Minamino and S. Suzuki},
  journal= {arXiv preprint arXiv:2308.05302},
  year   = {2023}
}

Development of a low-background HPGe detector at Kamioka Observatory

Abstract

Keywords

Cite

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