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    EP R&D Software Working Group Meeting

    → Europe/Zurich
    32/1-A24 (CERN)

    32/1-A24

    CERN

    40
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    EP R&D Software Working Group Meeting
    Zoom Meeting ID
    62893115044
    Host
    Graeme A Stewart
    Alternative host
    Andre Sailer
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    Software R&D WG Minutes, 2022-11-23

    Room: Jenny, Erica, Graeme, Paul, Andre, Alberto, Piyush, Witek, Dalila, Anna, Vincenzo, Geri, Valentin

    Remote: Andi, Benedikt, Javier, Marco, Juraj, Felice

    Introduction (Andre)

    Javier: should be able to give the analysis report on 14 December, so in principle we will keep the meeting that day. TBC.

    Reconstruction Calorimetry (Erica)

    • Q. Jenny - what is the lowest photon energy you can reconstruct?
      • A. Connected to the local density, around 10-20MeV
      • J Theoreticians are interested in how low they would have to model photons correctly

    • A. J - CMS colleagues complaining that Key4hep is Gaudi based, not CMSSW

      • A. CLUE is standalone; although CLUE3D is currently in CMSSW - need to port out. Important to have help to be able to use Key4hep at the moment.
      • Marco, CLUE3d now is in standalone, and also running via Alpaka on GPU. Shouldn't then be hard to port to Key4hep.
      • Andi, then we can test Gaudi GPU integration in that case.

    • Q. Anna - result for Pandora is for photons (not electrons, where Pandora would use the tracker)

      • A. Yes, that's why we had to create particles on the surface top avoid conversions.

    • Q. Witek - For the ODD, the geometry is very flat, which made it unusable for simulation. Can we have the tracker/calo implemented with some heirarchy? We see taht many solids are repeated.

      • A. Paul - the focus was on the structures we need, and it's not optimised. We are also having similar issues with the ITK geometry.
      • A. Andi - there is a heirarchy, which follows what was done for the FCC tracker. There is an MR yesterday to help optimise (reduce solids). Happy to collaborate, of course!
      • Anna - Jonas is having a look.

    • Q. Graeme - will CMS use CLUE/CLUE3D in the barrel?

      • A. Yes, probably - certainly needs to be studied.

    • Q. Graeme - can we adapt CLUE into Pandora?

      • A. It's under discussion. Want to work on the libraries.
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