Application of avalanche photodiodes as a readout for scintillator tile-fiber systems
Author(s) -
Cvetan Valeriev Cheshkov,
L. Litov,
I. Mandjoukov,
G. Georgiev,
Evgueni Gouchtchine,
V. Spassov
Publication year - 1999
Publication title -
journal of high energy physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.998
H-Index - 261
eISSN - 1126-6708
pISSN - 1029-8479
DOI - 10.1088/1126-6708/1999/09/022
Subject(s) - scintillator , physics , avalanche photodiode , preamplifier , large hadron collider , photodiode , optics , optical fiber , detector , muon , noise (video) , photomultiplier , silicon photomultiplier , photodetector , optoelectronics , nuclear physics , cmos , amplifier , artificial intelligence , computer science , image (mathematics)
The application of reach-through avalanche photodiodes (R'APD) as a photodetector for scintillator tiles has been investigated. The light collected by WLS fibers (0.84mm and 1mm diameter) embedded in the scintillator has been transmited to the 0 .5mm2 active surface of APD by clear optical fibers and optical connectors. A low noise charge sensitive preamplifier (approximately 400 electrons equivalent noise charge) has been used to gain the photodiode signal. Various configurations of tile-fibre s ystems, suitable for CMS and LHCb experiments at LHC have been studied using cosmic muons and muon beam at SPS at CERN. In order to optimize the performance of APD, measurments in the temperature range from -10°C to +25°C have been done. The MIP detection efficiency and electron/MIP separation have been estimated in order to determine applicability of the readout for LHCb preshower.
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