BCAL Reconstruction Meeting 2013-11-12

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Teleconference Time: 11:15 a.m. EDT

  • ESNET (Number is 8542553) and EVO session (GlueX Calorimetry meeting room)
  • Phone connection only upon request.
    • +1-866-740-1260 : US+Canada
    • +1-303-248-0285 : International
    • then enter participant code: 3421244# (remember the "#").
    • or www.readytalk.com (and code without the #)

Participant Direct Lines

  • JLab Phone: in CC F326 is 757-269-6460 (usual room)
  • JLab Phone in CC L207 is 757-269-7084
  • Phone in the Regina Video-conference Suite is 306-585-4204


  1. BCAL Reconstruction Issues
  2. BCAL Reconstruction Algorithms
  3. Will's reconstructed energy info

Action Items

  1. Introduce FPGA timing algorithm to derive hit times from fADC
  2. Smoothing of spectra and filling of 2D histos (Andrei and David)
  3. "Curvature effect": incorporate Andrei's and Irina's parametrization of this effect into the KLOE and IU codes and establish that this closes the gap in cluster handling between the two codes. (Who?)
  4. Start developing BDT variables for cluster handling in the BCAL Reconstruction. (All)
  5. Constants in code should be transferred to database; list of parameters for ccdb storage.


  1. Announcements
  2. Action Items
  3. Software Review Slides (David)
  4. Action Items
  5. Updates
  6. Any other business


Attendees: David, Yi, Beni (JLab), Will (CMU), Andrei, Zisis (Regina)

  1. Announcements: none
  2. Action Items
    1. Nothing done, but keep on list
    2. Not yet done. Schedule set for Andrei to deliver in early December
    3. This will now be folder into item 2.
    4. BDT discussion: use BDT in step 1 just for em clusters with (bad: cluster, noise background, splitoffs, etc), in terms of cluster reconstruction. Train the BDT with the MC to the best we can. Define best variables. Then in step 2 use em (fore) and hadronic showers (background). Train the Tree with all event types (splitoffs, overlaps, etc). Start with single showers. The importance of the simulation is paramount. Unbias simulated data is needed in the sense of not having cuts. Anticipate differences between simulated and real data.
  3. Updates:
    1. Will can devote some time to transfer his existing work into BDT. It needs about a day. Much beyond that someone else has to pick up the work. Perhaps Giovanni can go to CMU to be trained by Will.
    2. A healthy discussion took place in how to use Andrei/Irina's curvature "library" information in the reconstruction. This hurdle needs to be overcome to prepare us with the real data analysis. Need to estimate how much effort this takes and whether improvement will be useful. Giovanni will work on this.
  4. Software Review Slides (David)
    1. Software Review Committee will look at current state of software and make sure it is mature.
  5. Any other business