Space charge in ionization detectors and the NA48 electromagnetic calorimeter

Citation
S. Palestini et al., Space charge in ionization detectors and the NA48 electromagnetic calorimeter, NUCL INST A, 421(1-2), 1999, pp. 75-89
Citations number
12
Language
INGLESE
art.tipo
Article
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
0168-9002 → ACNP
Volume
421
Issue
1-2
Year of publication
1999
Pages
75 - 89
Database
ISI
SICI code
0168-9002(19990121)421:1-2<75:SCIIDA>2.0.ZU;2-U
Abstract
The subject of space charge due to positive ions slowly moving in parallel plate ionization chambers is considered. A model for the degradation of the detector response is developed, with particular emphasis on electromagneti c calorimeters. The topics discussed include: (a) the stationary; (b) the t ime dependent cases; (c) the limit of very large space charge, (d) the elec tric held dependence of the electron drift velocity; (e) the effect of long itudinal development of showers; (f) the behaviour of the average reduction s of response; and (g) the non-uniformity of response for different positio ns of the shower axis inside the cell defined by the electrodes. The NA48 c alorimeter is used as application and for comparison of results. (C) 1999 E lsevier Science B.V. All rights reserved.