Aerogel RICH for forward PID at Belle II
Aerogel RICH for forward PID at Belle II
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气凝胶 RICH 用于 Belle II 的正向 PID
DOI：
10.1016/j.nima.2013.06.080
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
他
中科院分区：
文献类型：
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作者：
R. Pestotnik (Stefan Inst.;Ljubljana);S. Iwata;H. Kakuno;T. Kumita;T. Sumiyoshi (Tokyo Metropolitan U.);他
对于 Belle II 光谱仪，我们正在准备一个以气凝胶作为散热器的近距聚焦 RICH。它将被放置在光谱仪的前进方向上，位于 1.5 T 强磁场内的漂移室和电磁量热计之间的小空间内。用作光电传感器的混合雪崩光电二极管能够高效地检测单光子，可以在磁场中工作，并且能够抵抗探测器中预期的中子和伽马通量。通过检测每个入射 4 GeV/cp 离子超过 11 个光子，并具有 15 mrad 单光子切伦科夫角分辨率，设计的气凝胶 RICH 应该能够在 0.5 GeV/cup 至 4 GeV/c 的广泛粒子动量范围内有效地将 kaon 与 π 介子分离。
For the Belle II spectrometer we are preparing a proximity focusing RICH with aerogel as the radiator. It will be positioned in the forward direction of the spectrometer in the small space between the drift chamber and the electromagnetic calorimeter inside a strong magnetic field of 1.5 T. The Hybrid Avalanche Photo Diode used as a photo sensor, is able to detect single photons with a high efficiency, can operate in the magnetic field and is resistant to the expected neutron and gamma fluxes in the detector. By detecting more than 11 photons per incident 4 GeV/cpion, with 15 mrad single photon Cherenkov angle resolution, the designed aerogel RICH should enable an efficient separation of kaons from pions in the wide range of particle momenta from 0.5 GeV/cup to 4 GeV/c.