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Title: A Software Toolkit to Study Systematic Uncertainties of the Physics Models of the Geant4 Simulation Package

Journal Article · · Journal of Physics. Conference Series
 [1];  [1];  [2];  [1];  [1];  [2];  [1]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. SLAC National Accelerator Lab., Stanford, CA (United States)
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The Geant4 simulation toolkit is used to model interactions between particles and matter. Geant4 employs a set of validated physics models that span a wide range of interaction energies. These models rely on measured cross-sections and phenomenological models with the physically motivated parameters that are tuned to cover many application domains. To study what uncertainties are associated with the Geant4 physics models we have designed and implemented a comprehensive, modular, user-friendly software toolkit that allows the variation of one or more parameters of one or more Geant4 physics models involved in simulation studies. It also enables analysis of multiple variants of the resulting physics observables of interest in order to estimate the uncertainties associated with the simulation model choices. Based on modern event-processing infrastructure software, the toolkit offers a variety of attractive features, e.g. exible run-time con gurable work ow, comprehensive bookkeeping, easy to expand collection of analytical components. Design, implementation technology, and key functionalities of the toolkit are presented in this paper and illustrated with selected results.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1358084
Report Number(s):
FERMILAB-CONF-17-050-CD; 1600728
Journal Information:
Journal of Physics. Conference Series, Vol. 898, Issue 4; ISSN 1742-6588
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

Figures / Tables (4)

Figure 1(p. 4)figure Figure 1
Figure 2(p. 5)figure Figure 2
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Figure 4(p. 6)figure Figure 4

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Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS