ATTENTION! We have to do a short maintenance with downtime on Tue 14 Dec 2021, 10 - 11h CET (18 - 19h JST). Please finish your work in time to prevent data loss.

FSP Workshop: Slow pion tracking

MIAPP, Garching

MIAPP, Garching

Campus of Max-Planck Society Ahornstr 85748 Garching Germany
Stephan Paul (Belle (SuperKEKB Experiment)) , Thomas Kuhr (BELLE (BELLE II Experiment))

In order to cope with the high amount of data generated by the Belle II PXD its data are reduced using regions of interest. In this scheme, tracks from slow pions hitting only the inner detectors are lost from the events.

This workshop is focused on the development of another readout and reconstruction scheme where these tracks are preserved. We will discuss the physics motivation for these kinds of tracks. Based on that the workshop will cover tracking of these particles and challenges due to background tracks in the PXD. As well as identification and reconstruction of clusters created in those events and how these tasks can be implemented in the DAQ. Two days are foreseen for discussion and collaborative work on the topics discussed during the workshop.

The workshop will be held in Garching from 8-12 November 2021.

Zoom room:

Passcode: SlowPion

  • Andrei Rabusov
  • Carsten Niebuhr
  • Christian Kiesling
  • Christian Wessel
  • Christoph Schwanda
  • Denis Bodrov
  • Dmitrii Riabchikov
  • Dmytro Meleshko
  • Elisabetta Prencipe
  • Hans-Günther Moser
  • Igor Konorov
  • Jens Sören Lange
  • Jyotirmoi Borah
  • Katharina Dort
  • Lu Cao
  • Lukas Bierwirth
  • Mariangela Varela
  • Matthäus Krein
  • Norman Molina
  • Sergei Gerassimov
  • Soh Y. Suzuki
  • Souvik Maity
  • Stefan Huber
  • Stephan Paul
  • Stephanie Käs
  • Thomas Lueck
  • Timo Schellhaas
  • Tommy Martinov
  • Yubo Han
    • 09:00 10:30
      Clustering: Clustering 1
      Convener: Jens Soeren Lange (BELLE (BELLE II Experiment))
    • 10:30 11:00
      Coffee break
    • 11:00 12:30
      Clustering: Clustering 2
      Convener: Jens Soeren Lange (BELLE (BELLE II Experiment))
      • 11:00
        Neural Network Slow Pion Rescue (Giessen Approach), PCA 30m
        Speaker: Stephanie Käs (Giessen)
      • 11:30
        Neural Network Slow Pion Rescue (Giessen Approach), Support Vector Machines 30m
        Speaker: Timo Schellhaas (Giessen)
      • 12:00
        Neural Network Slow Pion Rescue (Giessen Approach), Convolution NN 30m
        Speaker: Johannes Bilk (Giessen)
    • 12:30 14:00
      Lunch break
    • 14:00 15:30
      PXD: PXD Infrastructure
      Convener: Bjoern Spruck (BELLE (BELLE II Experiment))


      - LocalDAQ is essential for calibration and pedestal taking. Has to be kept (agreed!).
      - Currently most PXD shifter monitoring is provided by ONSEN
      - Most DHH based monitoring had been dropped in 2019; recently added monitoring for overlapping firmware may be similar to what ONSEN provides and may be used/extended in the future
      - Removing ONSEN from system would mean monitoring has to be done elsewhere (but it seems in most plans ONSEN will stay for the moment)
      - Adding new PCIe hardware means adding to run control and provide hardware and data flow monitoring (in hard- and/or software).
      - Manpower for SlowControl identified as issue.


    • 15:30 16:00
      Coffee break
    • 10:00 10:30
    • 10:30 11:00
      Coffee break
    • 11:00 12:30
    • 12:30 14:00
      Lunch break
    • 15:30 16:00
      Coffee break
    • 10:30 11:00
      Coffee break
    • 12:30 14:00
      Lunch break