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Fast shower simulation in the ATLAS calorimeter

The time to simulate pp collisions in the ATLAS detector is largely dominated by the showering of electromagnetic particles in the heavy parts of the detector, especially the electromagnetic barrel and endcap calorimeters. Two procedures have been developed to accelerate the processing time of elect...

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Detalles Bibliográficos
Autores principales: Barberio, E, Boudreau, J, Butler, B, Cheung, S L, Dell'Acqua, A, Di Simone, A, Ehrenfeld, W, Gallas, M V, Glazov, A, Marshall, Z, Müller, J, Placakyte, R, Rimoldi, A, Savard, P, Tsulaia, V, Waugh, A, Young, C C
Lenguaje:eng
Publicado: 2008
Materias:
Acceso en línea:https://dx.doi.org/10.1088/1742-6596/119/3/032008
http://cds.cern.ch/record/1176890
Descripción
Sumario:The time to simulate pp collisions in the ATLAS detector is largely dominated by the showering of electromagnetic particles in the heavy parts of the detector, especially the electromagnetic barrel and endcap calorimeters. Two procedures have been developed to accelerate the processing time of electromagnetic particles in these regions: (1) a fast shower parameterisation and (2) a frozen shower library. Both work by generating the response of the calorimeter to electrons and positrons with Geant 4, and then reintroduce the response into the simulation at runtime.