You need JavaScript to view this

The parametrized simulation of electromagnetic showers; Die parametrisierte Simulation elektromagnetischer Schauer

Abstract

The simulation of electromagnetic showers in calorimeters by detailed tracking of all secondary particles is extremely computer time consuming. Without loosing considerably in precision, the use of parametrizations for global shower properties may reduce the computing time by factors of 10{sup 1} to 10{sup 4}, depending on the energy, the degree of parametrization, and the complexity in the material description and the cut off energies in the detailed simulation. To arrive at a high degree of universality, parametrizations of individual electromagnetic showers in homogeneous media are developed, taking the dependence of the shower development on the material into account. In sampling calorimeters, the inhomogeneous material distribution leads to additional effects which can be taken into account by geometry dependent terms in the parametrization of the longitudinal and radial energy density distributions. Comparisons with detailed simulations of homogeneous and sampling calorimeters show very good agreement in the fluctuations, correlations, and signal averages of spatial energy distributions. Verifications of the algorithms for the simulation of the H1 detector are performed using calorimeter test data for different moduls of the H1 liquid argon calorimeter. Special attention has been paid to electron pion separation, which is of great importance for physics analysis. (orig.). [Deutsch]  More>>
Authors:
Publication Date:
Sep 01, 1992
Product Type:
Thesis/Dissertation
Report Number:
MPI-PhE-92-13
Reference Number:
SCA: 440104; PA: DEN-93:000824; SN: 93000924816
Resource Relation:
Other Information: TH: Diss.; PBD: Sep 1992
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CALORIMETERS; CASCADE SHOWERS; HERA STORAGE RING; COMPUTERIZED SIMULATION; RADIATION TRANSPORT; SPATIAL DISTRIBUTION; ENERGY DENSITY; FLUCTUATIONS; ARGON; LIQUID IONIZATION CHAMBERS; SHOWER COUNTERS; CORRELATIONS; ALGORITHMS; ELECTRON DETECTION; PION DETECTION; PARTICLE DISCRIMINATION; 440104; HIGH ENERGY PHYSICS INSTRUMENTATION
OSTI ID:
10116580
Research Organizations:
Max-Planck-Institut fuer Physik, Muenchen (Germany). Werner-Heisenberg-Institut; Hamburg Univ. (Germany). Fachbereich 12 - Physik
Country of Origin:
Germany
Language:
German
Other Identifying Numbers:
Other: ON: DE93758543; TRN: DE9300824
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
DEN
Size:
208 p.
Announcement Date:
Jun 30, 2005

Citation Formats

Peters, S. The parametrized simulation of electromagnetic showers; Die parametrisierte Simulation elektromagnetischer Schauer. Germany: N. p., 1992. Web.
Peters, S. The parametrized simulation of electromagnetic showers; Die parametrisierte Simulation elektromagnetischer Schauer. Germany.
Peters, S. 1992. "The parametrized simulation of electromagnetic showers; Die parametrisierte Simulation elektromagnetischer Schauer." Germany.
@misc{etde_10116580,
title = {The parametrized simulation of electromagnetic showers; Die parametrisierte Simulation elektromagnetischer Schauer}
author = {Peters, S}
abstractNote = {The simulation of electromagnetic showers in calorimeters by detailed tracking of all secondary particles is extremely computer time consuming. Without loosing considerably in precision, the use of parametrizations for global shower properties may reduce the computing time by factors of 10{sup 1} to 10{sup 4}, depending on the energy, the degree of parametrization, and the complexity in the material description and the cut off energies in the detailed simulation. To arrive at a high degree of universality, parametrizations of individual electromagnetic showers in homogeneous media are developed, taking the dependence of the shower development on the material into account. In sampling calorimeters, the inhomogeneous material distribution leads to additional effects which can be taken into account by geometry dependent terms in the parametrization of the longitudinal and radial energy density distributions. Comparisons with detailed simulations of homogeneous and sampling calorimeters show very good agreement in the fluctuations, correlations, and signal averages of spatial energy distributions. Verifications of the algorithms for the simulation of the H1 detector are performed using calorimeter test data for different moduls of the H1 liquid argon calorimeter. Special attention has been paid to electron pion separation, which is of great importance for physics analysis. (orig.). [Deutsch] Die Simulation elektromagnetischer Schauer in Kalorimetern durch eine detaillierte Verfolgung der Spuren aller Einzelteilchen erfordert einen extremen Rechenzeitaufwand. Die Verwendung von Parametrisierungen globaler Schauereigenschaften kann die Rechenzeit bei weitgehender Erhaltung der Genauigkeit um Faktoren 10{sup 1} bis 10{sup 4} reduzieren, abhaengig von der Energie, dem Umfang der Parametrisierungen sowie der Komplexitaet der Materialbeschreibung und den Abschneideenergien in der detaillierten Simulation. Um einen hohen Grad an Allgemeinheit zu erreichen, werden Parametrisierungen zur Beschreibung individueller elektromagnetischer Schauer in homogenen Medien entwickelt, die die Materialabhaengigkeit der Schauerentwicklung beruecksichtigen. In Sampling-Kalorimetern fuehrt die inhomogene Materialverteilung zu zusaetzlichen Effekten, die durch geometrieabhaengige Terme in den Parametrisierungen der longitudinalen und radialen Energiedichteverteilungen beruecksichtigt werden koennen. Vergleiche mit detaillierten Simulationen homogener und Sampling-Kalorimeter zeigen eine sehr gute Uebereinstimmung von Fluktuationen, Korrelationen und Signalmittelwerten raeumlicher Energieverteilungen. Eine Verifizierung der Algorithmen zur Simulation des H1-Detektors wird mit Hilfe experimenteller Daten aus Kalorimetertests verschiedener Module des H1 Fluessig-Argon Kalorimeters durchgefuehrt. Dabei werden Untersuchungen zur Elektron-Pion Trennung, die in der Physik-Analyse eine wichtige Rolle spielt, besonders beruecksichtigt. (orig.).}
place = {Germany}
year = {1992}
month = {Sep}
}