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arXiv physics/0410080physics.ins-det
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用于光子探测器的长夹层模块

Long sandwich modules for photon veto detectors

N. Yershov, M. Khabibullin, Yu. Kudenko, L. Littenberg, V. Mayatski, O. Mineev

摘要:

介绍了为BNL实验KOPIO研制的长铅闪烁体夹层模块。单个4 m长的模块由15层7 mm厚的挤出闪烁体和15层1 mm铅吸收体组成。读出是通过WLS光纤粘合到凹槽中的闪烁体与7毫米的间距,并从两端的光电管。获得了300 ps的宇宙MIP的时间分辨率。2年的光输出稳定性监测表明,没有超出测量误差的退化。一个4米长的C形弯曲的三明治模块也被制造和测试。

英文摘要:

Long lead-scintillator sandwich modules developed for the BNL experiment KOPIO are described. The individual 4 m long module consists of 15 layers of 7 mm thick extruded scintillator and 15 layers of 1 mm lead absorber. Readout is implemented via WLS fibers glued into grooves in a scintillator with 7 mm spacing and viewed from both ends by the phototubes. Time resolution of 300 ps for cosmic MIPs was obtained. Light output stability monitored for 2 years shows no degradation beyond the measurement errors. A 4 m long C-bent sandwich module was also manufactured and tested.

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