APD performance in a luminosity monitor at LEP

Authors
Bartolome, E Boix, G Casado, MP Chmeissani, M Clemente, S Fernandez, E Garrido, L Lorenz, E Martinez, M Merino, G Riu, I Sanchez, F Wright, A
Citation
E. Bartolome et al., APD performance in a luminosity monitor at LEP, NUCL INST A, 442(1-3), 2000, pp. 198-202
Citations number
6
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
442
Issue
1-3
Year of publication
2000
Pages
198 - 202
Database
ISI
SICI code
0168-9002(20000311)442:1-3<198:APIALM>2.0.ZU;2-X
Abstract
Avalanche Photo-Diodes (APDs) are being used as optical readout elements in a sampling electromagnetic calorimeter made of alternate layers of tungste n and plastic scintillators. The calorimeter serves as a small-angle lumino sity monitor in the stray magnetic field of the ALEPH detector at LEP (CERN ). Its scintillators are coupled both to APDs and conventional PMTs simulta neously via wavelength shifter fibres. In this paper we present results on the overall performance of the APDs, including gain and stability versus ti me and energy, based an the direct comparison of the two photosensitive dev ices. (C) 2000 Elsevier Science B.V. All rights reserved.