Aerogel RICH for the Belle II forward PID
Aerogel RICH for the Belle II forward PID
复制标题
用于 Belle II 前向 PID 的气凝胶 RICH
DOI：
10.1016/j.nima.2014.06.061
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
I. Adachi et al.
中科院分区：
文献类型：
--
作者：
S. Nishida;I. Adachi et al.
贝儿II型光谱仪是非常成功的贝儿实验的后续，目前正在日本KEK的SuperKEKB电子-正电子对撞机上建造。对于光谱仪前区的PID系统，正在开发一种带有气凝胶辐射器的近贴聚焦环成像切伦科夫（RICH）计数器。该计数器将提供高达4 GeV/c动量的π介子和K介子的4σ分离。对于位置敏感光子传感器，已经与Hamamatsu Photonics K.K.开发了144通道混合雪崩光电探测器（HAPD）。读出电子器件基于定制开发的ASIC。目前正在最后确定部件的设计，部分批量生产已经开始。在这里，我们报告的最终设计的计数器和原型测试进行测试梁在DESY。
The Belle II spectrometer, a follow up of the very successful Belle experiment, is under construction at the SuperKEKB electron–positron collider at KEK in Japan. For the PID system in the forward region of the spectrometer, a proximity focusing ring-imaging Cherenkov (RICH) counter with an aerogel radiator is being developed. The counter will provide a 4σ separation of pions and kaons up to momenta of 4 GeV/c. For the position sensitive photon sensor, a 144-channel Hybrid Avalanche Photo-Detector (HAPD) has been developed with Hamamatsu Photonics K.K. The readout electronics is based on the custom developed ASIC. The design of the components is currently being finalized and part of their mass production have already started. Herein, we report the final design of the counter and a prototype test conducted with test beams at DESY.