Space charge in ionization detectors and the NA48 electromagnetic calorimeter

Journal article

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 electromagnetic calorimeters .The topics discussed include: (a) the stationary; (b) the time dependent cases; (c) the limit of very large space charge; (d) the electric field dependence of the electron drift velocity; (e) the effect of longitudinal development of showers; (f ) the behaviour of the average reductions of response; and (g) the non-uniformity of response for different positions of the shower axis inside the cell defined by the electrodes. The NA48 calorimeter is used as application and for comparison of results. © 1999 Elsevier Science B.V. All rights reserved.

Authors: Palestini, S; Barr, G; Biino, C; Calafiura, P; Ceccucci, A

• Publication status: Published
• Journal: NUCLEAR INSTRUMENTS and METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
• Volume: 421
• Issue: 1-2
• Pages: 75-89
• Publication date: 1999-01-21
• DOI: 10.1016/S0168-9002(98)01193-0
• ISSN: 0168-9002
• Language: English
• Keywords: ionization detectors; space charge; ion mobility; liquid noble gases; electromagnetic calorimeters