ACTS4NP - Workshop on ACTS Tracking for Nuclear Physics 2025

US/Pacific
NERSC building (B59-3101) (Lawrence Berkeley National Laboratory)

NERSC building (B59-3101)

Lawrence Berkeley National Laboratory

1 Cyclotron Rd, Berkeley, CA 94720
Corentin Allaire (IJCLab, Université Paris-Saclay, CNRS/IN2P3), Shujie Li (Berkeley Lab)
Description

The first ACTS Tracking for Nuclear Physics 2025 (ACTS4NP) workshop aims to bridge the ACTS tracking software community and nuclear physics experiments that might want to (or already) use ACTS for particle trajectory reconstruction in their detectors. We also encourage members of HEP, dark matter, and other physics communities to attend and share their experiences on track reconstructions!

In this workshop, ACTS experts from France and CERN will be present in person to facilitate discussions and hands-on work on ACTS implementation and tutorials. There will also be a mini-symposium on tracking with GPU and AI/ML. 

 Zoom info: 

Meeting ID: 944 9960 0303

password: workshop name in lower case (7 characters)

Venue

 This workshop will be hosted at Lawrence Berkelely National Lab
    •   May 12-13: B70A-3377
    •   May 14-15: B59-3101 (NERSC building) 

Registration  

Attention: the registration is reopened to accommodate online participants (who can connect to some but not all presentation sessions). Please contact the organizer before you submit a new in-person application. 

We welcome participants from nuclear physics and related areas.  This workshop is supported by the France-Berkeley Fund. Registration is free. Please submit your registration at your earliest convinience so that we have time to process your Berkeley Lab site access.

    • Registration deadline: March 15, 2025. 

    • You could register with "remote" option to receive zoom link for presentation sessions later.

    • Time slots for short contribution talks are available. 

    • Lunch box will be provided.

    • Please indicate if you are interested in the off-site social dinner, and LBNL tours.

Agenda  

The agenda is under development. A large fraction of the time will be reserved for in-person discussion and hands-on sessions dedicated to using and contributing to ACTS. 
 
There will be topical discussions in the afternoons (e.g. EIC, telescope-type detector, drift chamber/TPC). If there is a specific subject you would be interested in seeing discussed, don't hesitate to bring it up to the organisers.
 
Letter of Invitation: If you need a letter of Invitation to the workshop, please get in touch with the organisers.

 

This event is supported by the France-Berkeley Fund

 

 

Participants
Surveys
Questions to participants
    • 08:40
      Registration 70A-3377 (LBNL)

      70A-3377

      LBNL

    • Introduction B70A-3377 (LBNL)

      B70A-3377

      LBNL

      Convener: Shujie Li (Berkeley Lab)
    • Presentation: ACTS project B70A-3377 (LBNL)

      B70A-3377

      LBNL

    • Lunch
    • Experiment specific discussion: Updates 70A-3377 (LBNL)

      70A-3377

      LBNL

      Convener: Andreas Salzburger (CERN)
      • 3
        ACTS tracking for EIC-ePIC detector 70A-3377

        70A-3377

        LBNL

        Speaker: Dmitry Kalinkin
      • 4
        Development of ACTS based tracking for multi-TPC at Tagged Deep Inelastic Scattering experiment 70A-3377

        70A-3377

        LBNL

        Speaker: Dmitry Romanov
      • 5
        LDMX 70A-3377

        70A-3377

        LBNL

        Speaker: Elizabeth Berzin (Stanford University)
      • 6
        Tracking for SoLID 70A-3377

        70A-3377

        LBNL

        Speaker: Zhongling Ji (Syracuse University)
      • 7
        PIONEER: A next generation rare pion decay experiment relying on 5D tracking 70A-3377

        70A-3377

        LBNL

        The next generation rare pion decay experiment PIONEER aims to test LFU by measuringR_{e\mu}= BR(\pi -> e \nu(\gamma)) / BR(\pi->\mu\nu (\gamma)) to a precision of 0.01% in phase I and provide insights on CKM unitarity through probing pion beta decay in phase II. To achieve this goal, the experimental design incorporates lessons learned from the predecessors PIENU and PEN/PIBETA. In this talk, I will cover the main experimental improvements with respect to those predecessor experiments - most notably a highly segmented active target with 5D tracking capabilities. I will also highlight the challenges in the event reconstruction and analysis to achieve the order of magnitude improvement in precision for phase I and how track information from the active target will help us to overcome those challenges.

        Speaker: Patrick Schwendimann
    • 15:35
      Break
    • Hands-on session: Discussions: Topics for the hands-on 70A-3377 (LBNL)

      70A-3377

      LBNL

    • 19:00
      Workshop Dinner O'neill room (Berkeley Faculty Club)

      O'neill room

      Berkeley Faculty Club

      Minor Ln, Berkeley, CA (on campus)
    • 08:40
      Coffee break
    • Experiment specific discussion: breakroom discussions (contact the organisers) 70A-3377 (LBNL)

      70A-3377

      LBNL

    • Tour to NERSC and 88inch Cyclotron LBNL

      LBNL

      • 8
        NERSC
      • 9
        88inch
    • Lunch: Lunch at the Guest House (B23) B23 (Guest House 2nd floor) (LBNL)

      B23 (Guest House 2nd floor)

      LBNL

    • Tutorial: Installing, using and contributing to ACTS 70A-3377 (LBNL)

      70A-3377

      LBNL

    • 15:30
      Break
    • Hands-on session: Hands-on / Discussions 70A-3377 (LBNL)

      70A-3377

      LBNL

    • 08:40
      Coffee break NERSC building (B59-3101)

      NERSC building (B59-3101)

      Lawrence Berkeley National Laboratory

      1 Cyclotron Rd, Berkeley, CA 94720
    • Topical discussion: Users Experiences NERSC building (B59-3101)

      NERSC building (B59-3101)

      Lawrence Berkeley National Laboratory

      1 Cyclotron Rd, Berkeley, CA 94720
      Convener: Shujie Li (Berkeley Lab)
    • Lunch
    • Tutorial: Detector geometry and ODD NERSC building (B59-3101)

      NERSC building (B59-3101)

      Lawrence Berkeley National Laboratory

      1 Cyclotron Rd, Berkeley, CA 94720
      Convener: Paul Gessinger (CERN)
    • 15:00
      Break NERSC building (B59-3101)

      NERSC building (B59-3101)

      Lawrence Berkeley National Laboratory

      1 Cyclotron Rd, Berkeley, CA 94720
    • Topical discussion: Algorithm Development NERSC building (B59-3101)

      NERSC building (B59-3101)

      Lawrence Berkeley National Laboratory

      1 Cyclotron Rd, Berkeley, CA 94720
    • Hands-on session: Hands-on / Discussions NERSC building (B59-3101)

      NERSC building (B59-3101)

      Lawrence Berkeley National Laboratory

      1 Cyclotron Rd, Berkeley, CA 94720
    • 08:40
      Coffee break NERSC building (B59-3101)

      NERSC building (B59-3101)

      Lawrence Berkeley National Laboratory

      1 Cyclotron Rd, Berkeley, CA 94720
    • Topical discussion: Topical discussion: ML/DL for Tracking NERSC building (B59-3101)

      NERSC building (B59-3101)

      Lawrence Berkeley National Laboratory

      1 Cyclotron Rd, Berkeley, CA 94720
      Convener: Corentin Allaire (IJCLab, Université Paris-Saclay, CNRS/IN2P3)
      • 16
        ACTS algorithms (Ambiguity solver)
        Speaker: Corentin Allaire (IJCLab, Université Paris-Saclay, CNRS/IN2P3)
      • 17
        Exploring new directions in enhancing the ACTS parameter optimization suite

        Particle tracking is among the most sophisticated and complex parts of the full event reconstruction chain. Various reconstruction algorithms work in sequence to build trajectories from detector hits. Each of these algorithms requires numerous configuration parameters that need fine-tuning to properly account for the detector/experimental setup, the available CPU budget, and the desired physics performance. To automate and optimize the tuning of these parameters, automatic parameter optimization techniques were implemented in “A Common Tracking Software” (ACTS) framework, the open-source track reconstruction software framework. These techniques allow users to flexibly choose tunable parameters and define a cost/benefit function for optimizing the full reconstruction chain. Since their implementation, these techniques have been greatly beneficial for researchers across various experiments. This study discusses ongoing advancements in these optimization techniques, including novel approaches that enable a more systematic and gradual refinement of parameter tuning. Specifically, I will explore the integration of Bayesian Optimization techniques for tracking algorithm tuning, highlighting their potential to improve efficiency and precision beyond existing methods.

        Speaker: Rocky Bala Garg (Stanford University (US))
      • 10:00
        Break
      • 18
        Graph Neural Network
        Speaker: Jay Chan (LBNL)
      • 19
        Discussion: ML/DL with ACTS
    • Lunch
    • GPU Tracking: Presentation NERSC building (B59-3101)

      NERSC building (B59-3101)

      Lawrence Berkeley National Laboratory

      1 Cyclotron Rd, Berkeley, CA 94720
      Convener: Beomki Yeo (University of California Berkeley (US))
      • 20
        Introduction to traccc
        Speaker: Beomki Yeo (University of California Berkeley (US))
      • 21
        detray
        Speaker: Joana Niermann (CERN)
      • 22
        Geometry alignment
        Speaker: Vakho Tsulaia (Lawrence Berkeley National Lab. (US))
    • 14:45
      Break NERSC building (B59-3101)

      NERSC building (B59-3101)

      Lawrence Berkeley National Laboratory

      1 Cyclotron Rd, Berkeley, CA 94720
    • GPU Tracking: Discussion NERSC building (B59-3101)

      NERSC building (B59-3101)

      Lawrence Berkeley National Laboratory

      1 Cyclotron Rd, Berkeley, CA 94720
      Convener: Beomki Yeo (University of California Berkeley (US))
    • Introduction: Closing words NERSC building (B59-3101)

      NERSC building (B59-3101)

      Lawrence Berkeley National Laboratory

      1 Cyclotron Rd, Berkeley, CA 94720