August 9, 2017, Production & Analysis Working Group

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Meeting Time and Place

The meeting will be on Wednesday August 9, 2017 at 2:00 pm EDT. For those people at Jefferson Lab, the meeting will be in room F326.

Meeting Connections

  1. To join via a Web Browser, go to the page [1] https://bluejeans.com/115815824.
  2. To join via Polycom room system go to the IP Address: 199.48.152.152 (bjn.vc) and enter the meeting ID: 115815824.
  3. To join via phone, use one of the following numbers and the Conference ID: 115815824.
    • US or Canada: +1 408 740 7256 or
    • US or Canada: +1 888 240 2560
  4. More information on connecting to bluejeans is available.

Reconstruction & Analysis Studies Status

Agenda

  1. Announcements
  2. Data Production
  3. Analysis Focus
  4. This Week's Studies
  5. Any other studies
  6. Upcoming Study Schedule

This Week's Topics

  • Talks: Summary/overviews only. Detailed discussions should be held in the appropriate working groups.
  • Talks should be limited to 10 + 5 minutes.

Data Production

  1. Monitoring Update --- Thomas Britton
  2. Processing Update --- Alex Austregesilo
  3. Calibration Update --- Sean Dobbs
  4. Simulations Update --- Sean Dobbs

Analysis Focus: Total Cross Sections, Acceptance Corrections

  1. J/Ψ, φ --- Lubomir
  2. η, ρ, ω, φ --- Simon
  3. φ --- Thomas
  4. ω --- Cristiano
  5. Any others?

Studies: Hit Efficiencies & Triggering

(i.e. Is the detector working?) Updates on experiment, simulation, and the comparison between the two.

  1. Trigger emulation --- Alex Somov
  2. Triggering efficiency --- Alex Somov
  3. CDC Hit Efficiencies --- Naomi Jarvis
  4. FDC Hit Efficiencies --- Alex Austregesilo
  5. BCAL Hit Efficiencies --- Elton Smith
  6. FCAL Hit Efficiencies --- Jon Zarling

Upcoming Study Schedule

  • Updates on experiment, simulation, and the comparison between the two.
  • Summary/overviews only. Detailed discussions should be held in the appropriate working groups.
  • All talks should be limited to 10 + 5 minutes.

Next Week: Alignment & Track/Shower Efficiencies (i.e. Is the reconstruction working?) Updates on experiment, simulation, and the comparison between the two.

  1. Drift chamber alignment --- Mike Staib, Alex Barnes
  2. Tracking Efficiencies --- Paul Mattione, Cristiano Fanelli
  3. BCAL Shower Efficiencies --- Elton Smith
  4. FCAL Shower Efficiencies --- Jon Zarling

The week after next: Other Updates on experiment, simulation, and the comparison between the two.

  1. Track / Hit Matching: BCAL, FCAL, TOF, SC --- Paul Mattione, Simon
  2. Efficiencies: TOF, SC --- Beni, Mahmoud
  3. Means & Resolutions (time, energy, dE/dx): Tracking, BCAL, FCAL, SC, TOF
  4. Uncertainties: PID (BCAL, FCAL, TOF, dE/dx), Kinfit (BCAL, FCAL, tracking)
  5. Channel/Analysis Studies: Branching ratios, cross sections, SDMEs, beam asymmetries
  6. Other reconstruction/analysis issues

The following week: Beamline & Triggering

  1. Flux --- Justin
  2. Beam energy --- Beamline Group
  3. Polarization (TPOL & lineshape) --- Beamline Group
  4. Beam Asymmetries --- Alex Austregesilo
  5. Trigger emulation --- Alex Somov
  6. Triggering efficiency --- Alex Somov

Simulation Reports

15 Minute summaries of progress and future plans on the 2017 mcsmear Workplan.

  1. August 9
    1. CDC - Naomi Jarvis pdf
  2. August 16
    1. BCAL - Mark Dalton
    2. FDC - Lubomir Pentchev / Alex Austregesilo
    3. TOF - Beni Zihlmann
  3. August 21
    1. FCAL - Matt Shepherd
    2. SC - Mahmoud Kamel

Minutes

Data Production

  1. Monitoring Update --- Thomas reports no news is good news.
  2. Processing Update --- Alex A. reported that the first batch of the analysis launch took just 58 hours to run - since the farm was fairly empty, we were able to run ~700 jobs at once. Currently working to merge trees so that there is only one file per reaction per run.
    • Paul is testing the updated analysis library for the second batch of jobs. Currently the K+ Lambda final state looks good, the other reactions are being tested.
  3. Calibration Update --- Sean reported several updates in the works related to TOF and CDC dE/dx.
  4. Simulations Update --- Sean reported that the results for the first mcsmear mini-launch are available to help with matching mc and data. The files were produced on the OSG. See the linked wiki pages for more information.
      • Remember that we are planning for a simulation launch in early September, and to use the special branch of sim-recon that matches the data for these studies.
    • Naomi gave an update on the CDC mcsmear work
      • Dead channels have been added, will worry about adding minor inefficiencies at the end once everything is understood better.
      • The timing distributions are slightly different between simulation and data, but the same tables are used in simulation and reconstruction, and the distributions look fine in HDGeant4, so it was agreed to not worry about the low-level timing at this point and focus on higher-level effects.
      • The hit integral distributions had worse agreement, the gain may need to be changed, but need to study some other effects, e.g. theta-dependent space-charge effect, which may be different in data and MC before trying to match.
      • Paul pointed out that the covariance matrices need to be compared in order to trust the kinematic fit.

Analysis Focus: Total Cross Sections, Acceptance Corrections

  1. J/Ψ, φ --- Lubomir mentioned that a tighter chi^2 cut gives better proportionality between 2016 and 2017 data.

Studies: Hit Efficiencies & Triggering

  1. Trigger emulation --- Alex Somov reported that he has some working code in a factory in a sim-recon branch that is working. The two remaining issues is figuring out which code lives in mcsmear and having a working version of RCDB - his is a development version and the current master branch breaks sim-recon.
    • Eugene: When can we see this version? Alex S.: Will make public by end of the week. Sean agreed to test the code.
    • David L.: if Dmitry can't fix the problem with the builds, he will take a look at it.
  2. Triggering efficiency --- Alex S. will show some slides next week.
  3. FDC Hit Efficiencies --- Alex A. reported that these are being discussed, will have an update next week.
  4. FCAL Hit Efficiencies --- Matt S. reported that the student who had been working on the block-level efficiencies is busy preparing for quals; he expects to reestablish contact after next week and have finalized results by the end of the month.