Picosecond timing of charged particles using the TORCH detector
Picosecond timing of charged particles using the TORCH detector
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使用 TORCH 探测器对带电粒子进行皮秒计时
DOI：
10.1016/j.nima.2022.166950
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Cicala M
中科院分区：
文献类型：
--
作者：
Cicala M
TORCH是一个大面积、高精度的飞行时间（ToF）探测器，旨在提供2-20 GeV/c动量范围内的带电粒子识别。带电强子在穿过10 mm石英辐射器时发射的瞬发切伦科夫光子传播到检测器的外围，在那里它们被聚焦到微通道板光电倍增管（MCP-PMT）阵列上。光子的位置和到达时间被用来推断粒子进入辐射体的时间，根据它们的ToF来识别强子。MCP-PMT是与工业合作伙伴共同开发的，以满足TORCH检测器的严格要求。要求包括精细分段的阳极、出色的时间分辨率和长寿命。在大约10米的飞行距离上，动量为10 GeV/c的K介子和π介子之间的ToF差为35 ps，导致每个轨道的定时分辨率要求为10-15 ps。平均每个强子检测到30个光子，这意味着单光子时间分辨率为70 ps。TORCH研发计划旨在通过实验室和束流测试来证明探测器概念的有效性，并提供了测试结果。在束流测试中达到了70-100 ps的时间分辨率，接近TORCH的设计目标。实验室定时测试包括操作连接到TORCH读出电子设备的MCP-PMT。测量的时间分辨率为50 ps，满足TORCH目标定时分辨率。
TORCH is a large-area, high-precision time-of-flight (ToF) detector designed to provide charged-particle identification in the 2–20 GeV/c momentum range. Prompt Cherenkov photons emitted by charged hadrons as they traverse a 10 mm quartz radiator are propagated to the periphery of the detector, where they are focused onto an array of micro-channel plate photomultiplier tubes (MCP-PMTs). The position and arrival times of the photons are used to infer the particles’ time of entry in the radiator, to identify hadrons based on their ToF. The MCP-PMTs were developed with an industrial partner to satisfy the stringent requirements of the TORCH detector. The requirements include a finely segmented anode, excellent time resolution, and a long lifetime. Over an approximately 10 m flight distance, the difference in ToF between a kaon and a pion with 10 GeV/c momentum is 35 ps, leading to a 10–15 ps per track timing resolution requirement. On average 30 photons per hadron are detected, which translates to a single-photon time resolution of 70 ps. The TORCH R&D program aims to demonstrate the validity of the detector concept through laboratory and beam tests, results from which are presented. A timing resolution of 70–100 ps was reached in beam tests, approaching the TORCH design goal. Laboratory timing tests consist of operating the MCP-PMTs coupled to the TORCH readout electronics. A time resolution of 50 ps was measured, meeting the TORCH target timing resolution.
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TORCH PMT：适合切伦科夫应用的密堆积、多阳极、长寿命 MCP-PMT
影响因子：
1.3
作者：
Conneely T
通讯作者：
Conneely T
影响因子：
1.8
作者：
Despeisse, M.;Powolny, F.;Lapington, J.
通讯作者：
Lapington, J.
DOI：
10.1016/j.nima.2018.07.023
发表时间：
2018-05
期刊：
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
影响因子：
--
作者：
N. Brook;L. Garc'ia;T. Conneely;D. Cussans;M. Dijk;K. Fohl;R. Forty;C. Frei;R. Gao;T. Gys;T. Hancock;N. Harnew;J. Lapington;J. Milnes;D. Piedigrossi;J. Rademacker;A. Garc'ia
通讯作者：
N. Brook;L. Garc'ia;T. Conneely;D. Cussans;M. Dijk;K. Fohl;R. Forty;C. Frei;R. Gao;T. Gys;T. Hancock;N. Harnew;J. Lapington;J. Milnes;D. Piedigrossi;J. Rademacker;A. Garc'ia
TORCH 飞行时间探测器中定制 MCP 系统的精密电子器件
影响因子：
1.3
作者：
Gao R
通讯作者：
Gao R
TORCH 原型模块的测试光束演示
DOI：
10.1088/1742-6596/2374/1/012004
发表时间：
2022
期刊：
Conference Series
影响因子：
--
作者：
Smallwood J
通讯作者：
Smallwood J