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    block this user An-Ping Li

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    Beijing 100085, P.R.China

    Space charge in ionization detectors and the NA48 electromagnetic calorimeter

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    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 e#ect of longitudinal development of showers; (f ) the behaviour of the average reductions of response; and (g) the non-uniformity of response for di#erent 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. PACS: 29.40.Cs; 29.40.Vj; 61.25.Bi Keywords: Ionization detectors; Space charge; Liquid noble gases; Ion mobility; Electromagnetic calorimeters *Corresponding author. E-mail: sandro.palestini@cern.ch. # Permanent address: Dipartimento di Fisica dell'Universita e Sezione dell'INFN di Torino, 10125 Torino, Italy. # Present address: CEA-Saclay-DSM---DAPNIA, 91191 Gif-sur-Yvette, France. # Permanent address: Dipartimento di Fisica dell'Universita e Sezione dell'INFN di Bologna, 40126 Bologna, Italy. # Permanent address: Departamento de F sica, Universidad de los Andes, Me rida 5101-A, Venezuela. 0168-9002/99/$ --- see front matter # 1999 Elsevier Science B.V. All rights reserved. PII: S 0 1 6 8 - 9 0 0 2 ( 9 8 ) 0 1 1 9 3 - 0 1.

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    Title : Space charge in ionization detectors and the NA48 electromagnetic calorimeter
    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 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 e#ect of longitudinal development of showers; (f ) the behaviour of the average reductions of response; and (g) the non-uniformity of response for di#erent 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. PACS: 29.40.Cs; 29.40.Vj; 61.25.Bi Keywords: Ionization detectors; Space charge; Liquid noble gases; Ion mobility; Electromagnetic calorimeters *Corresponding author. E-mail: sandro.palestini@cern.ch. # Permanent address: Dipartimento di Fisica dell'Universita e Sezione dell'INFN di Torino, 10125 Torino, Italy. # Present address: CEA-Saclay-DSM---DAPNIA, 91191 Gif-sur-Yvette, France. # Permanent address: Dipartimento di Fisica dell'Universita e Sezione dell'INFN di Bologna, 40126 Bologna, Italy. # Permanent address: Departamento de F sica, Universidad de los Andes, Me rida 5101-A, Venezuela. 0168-9002/99/$ --- see front matter # 1999 Elsevier Science B.V. All rights reserved. PII: S 0 1 6 8 - 9 0 0 2 ( 9 8 ) 0 1 1 9 3 - 0 1.
    Subject : unspecified
    Area : Mathematics
    Language : English
    Affiliations
    Url : http://www.cern.ch/NA48/Welcome/papers/SpaceCharge/paper.pdf
    Doi : 10.1.1.20.7584

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    An-Ping's Peer Evaluation activity

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