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Surface-based GPU-friendly geometry modeling for detector simulation / Apostolakis, John (CERN) ; Cvijetic, Dusan (LPHE, Lausanne) ; Cosmo, Gabriele (CERN) ; Gheata, Andrei (CERN) ; Hahnfeld, Jonas (CERN) ; Stan, Eduard-George (Bucharest, IFIN-HH ; Bucharest, Polytechnic Inst.)
In a context where the high-energy physics community strives to enhance software to handle increased data throughput, detector simulation is evolving to take advantage of new performance opportunities. Given the intricacy of particle transport simulation, recent advancements, such as adapting to accelerator hardware, require a significant research and development effort.The feasibility of porting complex particle transport codes to GPUs has been already demonstrated by parallelizing the processing of tracks undergoing electromagnetic interactions. [...]
2024 - 8 p. - Published in : EPJ Web Conf. 295 (2024) 03039 Fulltext: PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.03039

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ATLAS Geant4 Simulation Optimizations / ATLAS Collaboration
Several optimization techniques are implemented in the ATLAS Geant4 detector simulation to improve CPU and memory usage. [...]
ATL-SOFT-PROC-2024-005. - 2024. - 6 p.
Original Communication (restricted to ATLAS) - Full text

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ATLAS Geant4 Simulation Optimizations / ATLAS Collaboration
Several optimization techniques are implemented in the ATLAS Geant4 detector simulation to improve CPU and memory usage. [...]
ATL-PHYS-PROC-2024-048. - 2024. - 6 p.
Original Communication (restricted to ATLAS) - Full text

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Software and computing for Run 3 of the ATLAS experiment at the LHC / ATLAS Collaboration
The ATLAS experiment has developed extensive software and distributed computing systems for Run 3 of the LHC. [...]
arXiv:2404.06335 ; CERN-EP-2024-100. - 2024 - 175.
Fulltext - Previous draft version - Fulltext

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Optimizing the ATLAS Geant4 detector simulation software / ATLAS Collaboration
The ATLAS experiment at the LHC relies critically on simulated event samples produced by the full Geant4 detector simulation software FullSim. [...]
ATL-SOFT-PROC-2023-002. - 2023. - 6 p.
Original Communication (restricted to ATLAS) - Full text

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Optimizing the ATLAS Geant4 detector simulation software / ATLAS Collaboration
The ATLAS experiment at the LHC relies critically on simulated event samples produced by the full Geant4 detector simulation software (FullSim). FullSim was the major CPU consumer during the last data-taking year in 2018 and it is expected to be still significant in the HL-LHC era. [...]
ATL-SOFT-SLIDE-2022-552.- Geneva : CERN, 2022 - 17 p. Fulltext: PDF; External link: Original Communication (restricted to ATLAS)

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Offloading electromagnetic shower transport to GPUs / Amadio, G. (CERN) ; Apostolakis, J. (CERN) ; Buncic, P. (CERN) ; Cosmo, G. (CERN) ; Dosaru, D. (Ecole Polytechnique, Lausanne) ; Gheata, A. (CERN) ; Hageboeck, S. (CERN) ; Hahnfeld, J. (CERN) ; Hodgkinson, M. (Sheffield U.) ; Morgan, B. (Liverpool U.) et al.
Making general particle transport simulation for high-energy physics (HEP) single-instruction-multiple-thread (SIMT) friendly, to take advantage of accelerator hardware, is an important alternative for boosting the throughput of simulation applications. To date, this challenge is not yet resolved, due to difficulties in mapping the complexity of Geant4 components and workflow to the massive parallelism features exposed by graphics processing units (GPU). [...]
arXiv:2209.15445.- 2023 - 7 p. - Published in : J. Phys. : Conf. Ser. 2438 (2023) 012055 Fulltext: document - PDF; 2209.15445 - PDF;
In : 20th International Workshop on Advanced Computing and Analysis Techniques in Physics Research (ACAT 2021), Daejeon, Korea, 29 Nov - 3 Dec 2021, pp.012055

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Detector Simulation Challenges for Future Accelerator Experiments / Apostolakis, John (CERN) ; Bandieramonte, Marilena (Pittsburgh U.) ; Banerjee, Sunanda (Wisconsin U., Madison) ; Bartosik, Nazir (INFN, Turin) ; Corti, Gloria (CERN) ; Cosmo, Gabriele (CERN) ; Elvira, V Daniel (Fermilab) ; Evans, Thomas (ORNL, Oak Ridge (main)) ; Gheata, Andrei (CERN) ; Pagan Griso, Simone (LBNL, Berkeley) et al.
Detector simulation is a key component for studies on prospective future high-energy colliders, the design, optimization, testing and operation of particle physics experiments, and the analysis of the data collected to perform physics measurements. This review starts from the current state of the art technology applied to detector simulation in high-energy physics and elaborates on the evolution of software tools developed to address the challenges posed by future accelerator programs beyond the HL-LHC era, into the 2030-2050 period. [...]
FERMILAB-PUB-22-145-CMS-PPD.- 2022 - 20 p. - Published in : Front. Phys. 10 (2022) 913510 Fulltext: PDF;

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Description and stability of a RPC-based calorimeter in electromagnetic and hadronic shower environments / CALICE Collaboration
The CALICE Semi-Digital Hadron Calorimeter technological prototype completed in 2011 is a sampling calorimeter using Glass Resistive Plate Chamber (GRPC) detectors as the active medium. This technology is one of the two options proposed for the hadron calorimeter of the International Large Detector for the International Linear Collider. [...]
arXiv:2207.06291; CALICE-PUB-2022-02; CALICE-PUB-2023-02.- 2023-03-20 - 33 p. - Published in : JINST 18 (2023) P03035 Fulltext: document - PDF; 2207.06291 - PDF;

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A VecGeom navigator plugin for Geant4 / Wenzel, Sandro (CERN) ; Apostolakis, John (CERN) ; Cosmo, Gabriele (CERN)
VecGeom is a geometry modeller library with hit-detection features as needed by particle detector simulation at the LHC and beyond. It was incubated by a Geant-R&D; initiative and the motivation to combine the code of Geant4 and ROOT/TGeo into a single, better maintainable piece of software within the EU-AIDA program.So far, VecGeom is mainly used by LHC experiments as a geometry primitive library called from Geant4, where it was shown to provide 7–12% reduction in CPU time due to its faster algorithms for complex primitives [1].In this contribution, we discuss how VecGeom can be used as the navigating library in Geant4 in order to benefit from both its fast geometry primitives as well as its vectorised navigation module. [...]
2020 - 8 p. - Published in : EPJ Web Conf. 245 (2020) 02024 Fulltext from publisher: PDF;
In : 24th International Conference on Computing in High Energy and Nuclear Physics, Adelaide, Australia, 4 - 8 Nov 2019, pp.02024

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See also: similar author names
57	APOSTOLAKIS, John
23	Apostolakis, J.
57	Apostolakis, John

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