HSF Detector Simulation Working Group

2024 summary, 2025 plans

https://hepsoftwarefoundation.org/activities/detsim.html

2024 conveners :

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Krzysztof Genser (Mu2e, Geant4, Fermilab)

Kolja Kauder (STAR/EIC, BNL)

Tommaso Lari (ATLAS, Milano)

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2025 conveners :

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Makoto Asai (Geant4, JLab)

Tommaso Lari (ATLAS, Milano)

Anna Zaborowska (FCC, Geant4, CERN)

Summary of 2024 activities

Three seminars in two sessions on machine learning simulation

Machine learning in simulation in general in May

End-to-end fast simulation (i.e. generating physics objects directly from the event generation output) approaches in LHCb and CMS in June

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Preparation of the ESPPU document, with a community meeting in November

Plans for 2025 - candidate topics for seminars

In no particular order

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• In two weeks there will be a review of the Celeritas and Adept projects (calorimeter shower simulation on GPUs) by Geant4. We are considering a session with presentations from Celeritas and Adept in April (i.e. a presentation of the status of the projects, benefiting from the work they did for the review), and a report from Geant4 about their assessment on an early Summer timescale.
• Fluka.CERN progress, depending on status (probably after Summer)
• Calorimeter Fast Simulation Challenge, summarize recently published final results (https://arxiv.org/abs/2410.21611)
• Opticks-Geant4 integration for the ePIC RICH (probably after Summer)
• Tools to build G4 geometry from CAD files MRADSIM (commercial tool with free version, developed with INFN) and/or Georgia Technical University (working on this topic for ATLAS detector since a few years)
• Migration to HEPMC3 format (discuss also with Generator group)
• Wire-Cell package (for LAr TPC)

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Will contact candidate speakers to evaluate availability

Other topics might come up during the year