Latest results from the TORCH R&D Project

被引：1

作者：

Gys, T. ^{[1
]}

Brook, N. ^{[2
]}

Garcia, L. Castillo ^{[3
]}

Cussans, D. ^{[4
]}

Foehl, K. ^{[1
,5
]}

Forty, R. ^{[1
]}

Frei, C. ^{[1
]}

Gao, R. ^{[3
]}

Harnew, N. ^{[3
]}

Piedigrossi, D. ^{[1
]}

Rademacker, J. ^{[4
]}

Ros Garcia, A. ^{[4
,6
]}

van Dijk, M. ^{[1
,3
]}

机构：

[1] CERN, EP Dept, CH-1211 Geneva 23, Switzerland

[2] Univ Bath, Fac Sci, Wessex House, Bath BA2 7AY, Avon, England

[3] Univ Oxford, Denys Wilkinson Lab, Keble Rd, Oxford OX1 3RH, England

[4] Univ Bristol, HH Wills Phys Lab, Tyndall Ave, Bristol BS8 1TL, Avon, England

[5] Justus Liebig Univ Giessen, Ludwigstr 23, D-35390 Giessen, Germany

[6] Inst Fis Corpuscular, Calle Catedrat Jose Beltran 2, E-46980 Valencia, Spain

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2018年 / 912卷

基金：

欧洲研究理事会;

关键词：

Time-of-flight; Cherenkov light; Micro-channel plate photon detectors; IDENTIFICATION; DETECTOR;

D O I：

10.1016/j.nima.2017.10.034

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

TORCH (Timing Of internally Reflected CHerenkov photons) is a precision time-of-flight detector for particle identification at low momentum. It uses Cherenkov photons produced by charged particles passing through a quartz radiator plate. Some of these photons propagate by total internal reflection, they emerge at the edges and are subsequently focused onto photon detectors. The recorded positions and arrival times of the photons are used to precisely reconstruct their trajectory and propagation time in the quartz. This allows to determine the crossing time of the particles through the plate. The TORCH design requires the development of fast photon detectors with fine and asymmetric anode segmentation. The overall per-photon time precision must be better than 70 ps after signal processing and photon path reconstruction in the quartz. In addition, the photon detectors must survive several years of high illumination levels. The on-going R&D programme aims at demonstrating the TORCH basic concept through the realization of a detector module equipped with custom photon detectors featuring the required granularity and lifetime, with dedicated fast front-end electronics and with high-quality quartz radiator and focussing optics. This paper will report on the latest TORCH results achieved in the laboratory and in charged particle beam tests. It will also introduce the developments towards a full-scale module prototype. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：53 / 56

页数：4

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