Acts Developers Meeting

Name: Acts Developers Meeting
Start: 2023-06-20T17:00:00+02:00
End: 2023-06-20T18:10:00+02:00
Location: ZOOM ONLY

Tuesday 20 Jun 2023, 17:00 → 18:10 Europe/Zurich

ZOOM ONLY

Andreas Salzburger (CERN), Joana Niermann (Georg August Universitaet Goettingen (DE))

Description

General discussion on developments in Acts.

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98843051283

Paul Gessinger

Alexander J PFLEGER, Joana Niermann

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- 1
  CTD Abstract Discussion
  - a) Seed finding in the Acts Software Package: Algorithms and Optimizations
    
    ===============================================================
    
    Seed finding in the Acts Software Package: Algorithms and Optimizations
    
    Seed finding is an important and computationally expensive problem in
    the reconstruction of charged particle tracks; finding solutions to this
    problem involves forming triples (\emph{seeds}) of discrete points at
    which particles were detected (\emph{spacepoints}) in the detector
    volume. This combinatorial process scales cubically with the number of
    spacepoints, which in turn is expected to increase in future collision
    experiments as well as in upgrades to current experiments such as the
    HL-LHC (\emph{High-Luminosity Large Hadron Collider}). The Acts (\emph{A
    Common Tracking Software}) software package provides a broad range of
    algorithms -- including seeding -- for the reconstruction of charge
    particle tracks in a broad range of detectors. In order to provide
    competitive performance -- in terms of computation as well as physics --
    for future experiments, the Acts software provides highly optimized seed
    finding algorithms which can be configured for different detector
    geometries. In this talk, we describe the seeding algorithms in traccc
    which reduce the combinatorial explosion problem through the use of
    structured grids and $k$-dimensional search trees. We compare the
    performance of these algorithms in CPU- and GPU-based environments.
    Finally, we discuss strategies for reducing the volume of output seeds
    -- which impacts the performance of other algorithms such as
    combinatorial Kalman filtering -- such as seed filtering and seed merging.
    
    ===============================================================
  - b) ACTS Measurement Calibration
  - c) Exa.TrkX + CKF pipeline
  - d) Seed and track selection with ML
- 2
  
  PR Recap
  
  Speaker: Joana Niermann (Georg August Universitaet Goettingen (DE))
  
  slides.pdf
- 3
  
  Round table

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Acts Developers Meeting

ZOOM ONLY