升级了蜡烛中稀有衰变搜索的屏蔽

Progress in Nuclear Science and Technology Pub Date : 2019-01-31 DOI:10.15669/PNST.6.144

K. Nakajima, T. Batpurev, W. M. Chan, F. Dokaku, K. Fushimi, K. Kanagawa, S. Katagiri, K. Kawasaki, B. T. Khai, H. Kino, E. Kinoshita, T. Kishimoto, R. Hazama, H. Hiraoka, Daiki Hiyama, T. Iida, M. Ishikawa, Xiaolong Li, T. Maeda, K. Matsuoka, M. Moser, M. Nomachi, I. Ogawa, T. Ohata, Hiroyoshi Sato, K. Shamoto, M. Shimada, M. Shokati, N. Takahashi, Y. Takemoto, Y. Takihira, Y. Tamagawa, M. Tozawa, K. Teranishi, K. Tetsuno, V. Trang, M. Tsuzuki, S. Umehara, Wei Wang, S. Yoshida, N. Yotsunaga

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引用次数: 0

摘要

在旨在利用48Ca寻找非常罕见的无中微子双β衰变(0νββ)的candle实验中，我们引入了一种新的屏蔽系统，用于屏蔽探测器附近大量材料中中子捕获的高能γ射线，以及在CaF2晶体的0νββ靶中对232Th衰变的背景还原。介绍了背景降低的方法和新安装的屏蔽系统的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Upgrading of shielding for rare decay search in CANDLES

In the CANDLES experiment aiming to search for the very rare neutrino-less double beta decays (0νββ) using 48Ca, we introduced a new shielding system for high energy γ-rays from neutron captures in massive materials near the detector, in addition to the background reduction for 232Th decays in the 0νββ target of CaF2 crystals. The method of background reduction and the performance of newly installed shielding system are described.

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Progress in Nuclear Science and Technology

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