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AtlFast3: Next Generation of Fast Simulation in ATLAS

Hasib Ahmed · CERN

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About

ATLAS is one of the largest experiments at the Large Hadron Collider. Its broad physics program ranges from precision measurements to the discovery of new interactions, requiring gargantuan amount of simulated Monte Carlo events. However, a detailed detector simulation with Geant4 is often too slow and requires too many CPU resources. For more than 10 years, ATLAS has developed and utilized tools that replace the slowest component - the calorimeter shower simulation - by faster alternatives. AtlFast3 is the next generation of high precision fast simulation in ATLAS. AtlFast3 is a combination of a parametrization-based Fast Calorimeter Simulation and a new machine learning-based Fast Calorimeter Simulation, and is deployed to meet the computing challenges and Monte Carlo needs now and in the future of ATLAS. With unprecedented precision and the ability to model jet sub-structure, AtlFast3 can be used for the simulation of almost any physics processes..

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The talk

  1. AtlFast3: Next Generation of Fast Simulation in ATLAS 2021-05-21 · 30 min · CERN's player

Credits and licence

Institution
CERN
Department
Conferences
Speaker
Hasib Ahmed
Year
2021
Language
English
Subjects
Physics, Computer science, Earth and environment
Source
CERN
Licence
CERN, as CERN states it. CERN's terms
Attribution
© CERN. CERN provides its audiovisual media free of charge for educational and informational use, credited to CERN; this lecture is shown in CERN's own player.
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