1-5 September 2014
Faculty of Civil Engineering
Europe/Prague timezone

Simulation Upgrades for the CMS experiment

4 Sep 2014, 15:15
C219 (Faculty of Civil Engineering)


Faculty of Civil Engineering

Faculty of Civil Engineering, Czech Technical University in Prague Thakurova 7/2077 Prague 166 29 Czech Republic
Oral Data Analysis - Algorithms and Tools Data Analysis - Algorithms and Tools


David Lange (Lawrence Livermore Nat. Laboratory (US))


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. In this presentation, we will discuss the methods that we implemented and the corresponding demonstrated performance improvements deployed for our 2015 simulation application.

Primary author

David Lange (Lawrence Livermore Nat. Laboratory (US))


Mrs Ianna Osborne (Fermi National Accelerator Lab. (US)) Mike Hildreth (University of Notre Dame (US)) Prof. Vladimir Ivantchenko (CERN)

Presentation Materials