Space charge in ionization detectors and the NA48 electromagnetic calorimeter
- Palestini, S
- Barr, GD
- Biino, C
- Calafiura, P
- Ceccucci, A
- Cerri, C
- Chollet, JC
- Cirilli, M
- Cogan, J
- Costantini, F
- Crepe, S
- Cundy, D
- Fantechi, R
- Fayard, L
- Fischer, G
- Formica, A
- Frabetti, PL
- Funk, W
- Gianoli, A
- Giudici, S
- Gonidec, A
- Gorini, B
- Govi, G
- Iconomidou-Fayard, L
- Kekelidze, V
- Kubischta, W
- Luitz, S
- Mannelli, I
- Martini, M
- Mikulec, I
- Norton, A
- Ocariz, J
- Schinzel, D
- Sozzi, M
- Tatishvili, G
- Tkatchev, A
- Unal, G
- Velasco, M
- Vossnack, O
- Wahl, H
DOIAbstract
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 E...
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