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Title: Upgrades for the CMS simulation

Over the past several years, the CMS experiment has made significant changes to its detector simulation application. The geometry has been generalized to include modifications being made to the CMS detector for 2015 operations, as well as model improvements to the simulation geometry of the current CMS detector and the implementation of a number of approved and possible future detector configurations. These include both completely new tracker and calorimetry systems. We have completed the transition to Geant4 version 10, we have made significant progress in reducing the CPU resources required to run our Geant4 simulation. These have been achieved through both technical improvements and through numerical techniques. Substantial speed improvements have been achieved without changing the physics validation benchmarks that the experiment uses to validate our simulation application for use in production. As a result, we will discuss the methods that we implemented and the corresponding demonstrated performance improvements deployed for our 2015 simulation application.
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of Notre Dame, Notre Dame, IN (United States)
  3. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
  4. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Publication Date:
Report Number(s):
FERMILAB-CONF-14-592-CMS
Journal ID: ISSN 1742-6588; 1373000
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
Journal of Physics. Conference Series
Additional Journal Information:
Journal Volume: 608; Journal Issue: 1; Journal ID: ISSN 1742-6588
Publisher:
IOP Publishing
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
CMS Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1346390

Lange, D. J., Hildreth, M., Ivantchenko, V. N., and Osborne, I.. Upgrades for the CMS simulation. United States: N. p., Web. doi:10.1088/1742-6596/608/1/012056.
Lange, D. J., Hildreth, M., Ivantchenko, V. N., & Osborne, I.. Upgrades for the CMS simulation. United States. doi:10.1088/1742-6596/608/1/012056.
Lange, D. J., Hildreth, M., Ivantchenko, V. N., and Osborne, I.. 2015. "Upgrades for the CMS simulation". United States. doi:10.1088/1742-6596/608/1/012056. https://www.osti.gov/servlets/purl/1346390.
@article{osti_1346390,
title = {Upgrades for the CMS simulation},
author = {Lange, D. J. and Hildreth, M. and Ivantchenko, V. N. and Osborne, I.},
abstractNote = {Over the past several years, the CMS experiment has made significant changes to its detector simulation application. The geometry has been generalized to include modifications being made to the CMS detector for 2015 operations, as well as model improvements to the simulation geometry of the current CMS detector and the implementation of a number of approved and possible future detector configurations. These include both completely new tracker and calorimetry systems. We have completed the transition to Geant4 version 10, we have made significant progress in reducing the CPU resources required to run our Geant4 simulation. These have been achieved through both technical improvements and through numerical techniques. Substantial speed improvements have been achieved without changing the physics validation benchmarks that the experiment uses to validate our simulation application for use in production. As a result, we will discuss the methods that we implemented and the corresponding demonstrated performance improvements deployed for our 2015 simulation application.},
doi = {10.1088/1742-6596/608/1/012056},
journal = {Journal of Physics. Conference Series},
number = 1,
volume = 608,
place = {United States},
year = {2015},
month = {5}
}