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首页> 外文会议>International Conference on Technology and Instrumentation in Particle Physics >Liquid Xenon Detector with VUV-Sensitive MPPCs for MEG Ⅱ Experiment
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Liquid Xenon Detector with VUV-Sensitive MPPCs for MEG Ⅱ Experiment

机译：具有VUV敏感MPPC的液体氙探测器，用于MEGⅡ实验

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The MEG II experiment is an upgrade of the MEG experiment which searched for the charged lepton flavor violating decay of muon, μ→eγ. The target sensitivity of MEG II experiment is 4 x 10 ~(-14). The liquid xenon (LXe) detector was used to detect γ-ray from the signal decay, and its performance will be upgraded in MEG II. To achieve the higher granularity and uniformity of the scintillation readout, 216 photomultiplier tubes (PMTs) on the γ-ray entrance face has been replaced with 4092 Multi-Pixel Photon Counters (MPPCs). In this replacement, a large area VUV-MPPC is used which was newly developed in collaboration with Hamamatsu Photonics K.K. The performance of this MPPC was measured in LXe. Photon detection efficiency for LXe scintillation light was confirmed to be over 15%. Mass production of MPPC was performed and it was successfully installed to the detector. Detector commissioning is now ongoing towards the pilot run at the end of this year.
机译：MEG II实验是升级MEG实验，该实验搜索了违反MUON，μ→Eγ的腐烂的Lepton风味。 MEG II实验的目标敏感性为4×10〜（-14）。 液体氙（LXE）检测器用于检测来自信号衰减的γ射线，其性能将在MEG II中升级。 为了达到较高的焦点读出的粒度和均匀性，γ射线入口面上的216个光电倍增管（PMTS）已被4092多像素光子计数器（MPPC）代替。 在这种替换中，使用大面积的VUV-MPPC，其与Hamamatsu Photonics K.K的合作新开发。 在LXE中测量该MPPC的性能。 LXE闪烁光的光子检测效率被证实超过15％。 进行MPPC的大规模生产，并成功安装到探测器。 探测器调试现在正在持续到今年年底的试点。

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