Liquid Xenon detector R&D for 0ν2β search (KamXP)
Liquid Xenon detector R&D for 0ν2β search (KamXP)
复制标题
用于 0ν2β 搜索的液氙探测器研发 (KamXP)
DOI：
10.1088/1742-6596/1468/1/012138
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Kota Ueshima
中科院分区：
文献类型：
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作者：
Yue MA;赤石 貴也;赤石 貴也;赤石 貴也;Kota Ueshima
为了寻找无中微子双β衰变(0V2β)，一种新型的液体氙气探测器的研究正在进行中。由于Kamland-Zen实验的结果，实现全有源区探测器对于辐射能量的沉积是非常重要的。新开发的附加BG还原技术将在未来提高0V2β搜索的敏感度。我们的探测器概念是LXE存储在一种新型的塑料闪烁体容器中。在容器内表面，LXE闪烁光的波长从175 nm(VUV)移动到可见光。因此，LXE闪烁光可以被远离0V2β靶核的光子传感器探测到。LXE和塑料闪烁体的脉冲形状差异被用于额外的BG降低。在未来，8B太阳中微子事件将成为0V2β搜索的主要BGS之一。为了减少8B太阳中微子的BG，切伦科夫光的方向信息可能是有用的。报道了提高0V2β搜索灵敏度的LXE探测器的研发现状。
The R&D for a new type of liquid xenon (LXe) detector is ongoing to search for the neutrinoless double-beta decay (0v2β). As a result of the KamLAND-Zen experiment, it is very important to realize the all active region detector for the energy deposition of the radiation. Newly developed additional BG reduction techniques will improve the sensitivity of 0v2β search in the future. Our detector concept is LXe stored in a new type of plastic scintillator vessel. The wavelength of LXe scintillation light is shifted to visible light from 175nm (VUV) on the inner surface of the vessel. Therefore, the LXe scintillation light can be detected by photon sensors which are far away from the 0v2β target nuclei. The pulse shape difference between LXe and plastic scintillator is used for the additional BG reduction. In the future, 8 B solar neutrino events will be one of the dominant BGs in 0v2β search. To reduce the 8 B solar neutrino BG, the directional information of the Cherenkov light might be useful. The status of LXe detector R&D to improve the sensitivity of 0v2β search is reported.