Multi-PMT Modules for Hyper-Kamiokande
Multi-PMT Modules for Hyper-Kamiokande
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适用于 Hyper-Kamiokande 的多 PMT 模块
DOI：
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发表时间：
2019
期刊：
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通讯作者：
Nao Izumi
中科院分区：
文献类型：
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作者：
B. Quilain;M. Hartz;Y. Nishimura;M. Kuze;Haruya Morikawa;M. Inomoto;M. Ishitsuka;Nao Izumi
Hyper-Kamiokande是将在日本建造的260千吨水切伦科夫探测器，是超级Kamiokande实验的下一代。其广泛的物理计划包括核子衰变，来自天文和人造束流的中微子，主要重点是确定轻子CP破坏。为了探测中微子相互作用或质子衰变产生的微弱切伦科夫光，主要的光电探测器候选人是20英寸的“盒和线”光电倍增管（滨松R12860）。为了扩大Hyper-Kamiokande物理程序，多PMT模块的使用被认为是主要候选人的补充。多PMT光学模块基于装有多个小直径光电传感器、读出电子器件和电源的压力容器，具有对地球磁场的灵敏度较低、粒度增加、暗率降低、定时分辨率提高和方向信息几乎各向同性的视场等优点。我们将介绍为Hyper-Kamiokande开发的多PMT模块及其近探测器E61，以及对其单个3英寸PMT（R14374）性能的测量。我们将最终展示这些模块在Hyper-Kamiokande物理学中对高能和低能领域的影响。
Hyper-Kamiokande, a 260 kton water Cherenkov detector to be built in Japan, is the next generation of the Super-Kamiokande experiment. Its broad physics program includes nu-cleon decay, neutrinos from astronomical and human-made beam, with the main focus to determine the leptonic CP violation. To detect the weak Cherenkov light generated by neutrino interactions or proton decay, the primary photo-detector candidate are 20-inch “Box & Line” PMTs (Hamamatsu R12860). In order to enlarge Hyper-Kamiokande physics program, the use of multi-PMT modules is considered as a complement of the primary candidates. A multi-PMT Optical Module based on a pressure vessel instrumented with multiple small diameter photosensors, readout electronics and power, offers several advantages as weaker sensitivity to Earth’s magnetic field, increased granularity, reduced dark rate, improved timing resolution and directional information with an almost isotropic field of view. We will present the multi-PMT module developed for Hyper-Kamiokande and its near detector, E61, as well as the measurement of the performances of its individual 3-inch PMTs (R14374). We will finally show the impact of these modules in Hyper-Kamiokande physics in both the high and low energy sectors.