Timing capabilities of garnet crystals for detection of high energy charged particles

0482741 - FZÚ 2018 RIV NL eng J - Journal Article
Lucchini, M.T. - Gundacker, S. - Lecoq, P. - Benaglia, A. - Nikl, Martin - Kamada, K. - Yoshikawa, A. - Auffray, E.
Timing capabilities of garnet crystals for detection of high energy charged particles.
Nuclear Instruments & Methods in Physics Research Section A. Roč. 852, Apr (2017), s. 1-9. ISSN 0168-9002. E-ISSN 1872-9576
R&D Projects: GA ČR GA16-15569S
EU Projects: European Commission(XE) 690599 - ASCIMAT; European Commission(XE) 644260 - INTELUM
Grant - others:COST(XE) TD1401
Institutional support: RVO:68378271
Keywords : precision timing * calorimeters * time-of-flight * YAG:Ce * LuAG:Ce * GAGG:Ce * LSO:Ce * crystals * SiPM
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 1.336, year: 2017

Radiation tolerant, scintillating crystals coupled to silicon photomultipliers (SiPMs) can provide a flexible and compact option for the implementation of a precision timing layer inside large particle detectors. In this paper, we compare the timing performance of aluminum garnet crystals (YAG: Ce, LuAG: Ce, GAGG: Ce) and the improvements of their time resolution by means of codoping with Mg2+ ions. The crystals were read out using SiPMs from Hamamatsu glued to the rear end of the scintillator and their timing performance was evaluated by measuring the coincidence time resolution
(CTR) of 150 GeV charged pions traversing a pair of crystals. The influence of crystal properties, such as density, light yield and decay kinetics on the timing performance is discussed.
Permanent Link: http://hdl.handle.net/11104/0278128