TORCH 飞行时间项目的现状
仪器与探测器
2018-12-27 v1
摘要
TORCH 是一种飞行时间探测器，旨在为 10 m 飞行路径上动量达 10 GeV/c 的带电 π/K 粒子提供鉴别。为达到此性能水平，要求每个入射粒子的时间分辨为 15 ps。TORCH 使用 1 cm 厚石英平面作为切伦科夫光子源，光子随后被聚焦到有效面积 53 x 53 mm^2、等效分割为 8 x 128 像素的方形微通道板光电倍增管（MCP-PMT）上。一个带有定制 MCP-PMT 及相关读出电子学的小尺度 TORCH 演示器已在 CERN PS 设施的 5 GeV/c 混合 π/质子束中成功运行。初步结果表明可实现优于 100 ps 的单光子分辨。文中还讨论了用于 LHCb 实验 Upgrade II 的全尺寸 TORCH 探测器的预期性能。
引用
@article{arxiv.1812.09773,
title = {Status of the TORCH time-of-flight project},
author = {Neville Harnew and Srishti Bhasin and Thomas Blake and Nicholas Brook and Tom Conneely and David Cussans and Maarten van Dijk and Roger Forty and Christoph Frei and Emmy Gabriel and Rui Gao and Timothy Gershon and Thierry Gys and Tom Hadavizadeh and Thomas Hancock and Michel Kreps and James Milnes and Didier Piedigrossi and Jonas Rademacker},
journal= {arXiv preprint arXiv:1812.09773},
year = {2018}
}
备注
9 pages, 6 figures, Paper submitted to Nuclear and Methods A : Proceedings of the 10th International Workshop on Ring Imaging Cherenkov Detectors (RICH 2018), Moscow, Russia, July 29 to August 4 2018