Difference between revisions of "September 13, 2017, Production & Analysis Working Group"

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(Upcoming Study Schedule)
(Data Production)
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#* We need more people to look at their kinematic fitter outputs to determine how accurate the current fit errors are.
 
#* We need more people to look at their kinematic fitter outputs to determine how accurate the current fit errors are.
 
#* Paul: Add in Simon's improvements of track extrapolation
 
#* Paul: Add in Simon's improvements of track extrapolation
#* [https://halldweb.jlab.org/wiki/index.php/File:Stevens_fcal_9.13.17.pdf &pi;<sup>0</sup> yield run dependence] (Justin)
+
# Justin showed some slides trying to understand the [https://halldweb.jlab.org/wiki/index.php/File:Stevens_fcal_9.13.17.pdf &pi;<sup>0</sup> yield run dependence]
# Simulations Update --- Sean Dobbs
+
#* Difference between 2016 and 2017 yields remains.
#* [https://halldweb.jlab.org/wiki/images/3/3b/Production_20170913.pdf Trigger simulations] (Sean)
+
#* Looking at run-by-run variations shows that the last FCAL HV set leads to loss of showers at larger FCAL radii. 
#* [https://mailman.jlab.org/pipermail/halld-offline/2017-July/002884.html Simulation mini-launches]
+
#* This is supported by an analysis using a fiducial cut that removes this region. A ~20% drop in the high rate data remains. Various systematic effects/studies were discussed.
#** [[Sim-RP-2017-01-ver01 Conditions | 2017-01 ver 01]]
+
#* Eugene: Should look at fully charged modes to see if there is a similar effect.
#** [[Sim-RP-2017-01-ver02 Conditions | 2017-01 ver 02]]
+
#* Matt: The HV changes were generally small, order of 10 V. The resulting gain changes were ~10-20%.
#* [https://mailman.jlab.org/pipermail/halld-offline/2017-July/002840.html mcsmear development branch]
+
#* Alex A.: What is the loss in acceptance due to the fiducial cut.  Justin: Numbers not on hand, maybe ~30%.
#* [[2017 mcsmear Workplan]]
+
# Simulations Update --- Sean showed a few slides with an initial check of the trigger simulation.
 +
#* First step is consistency check running the algorithm on data.  Physics trigger generally close, BCAL-only trigger agrees within ~20%
 +
#* Alex S.: Agrees with his previous studies, known problems with mode 7 data.
 +
#* Working on more detailed checks, reweighing of bggen events.
 +
#* Paul M.: Please check rates of events where both triggers are fired.
 +
#* Will do another mini-launch once next round of trigger simulation updates are in and tested
 +
#* Looked at some FCAL monitoring plots, Matt and Elton reminded to make sure that only physics triggers are used.
  
 
=== Simulation Reports ===
 
=== Simulation Reports ===

Revision as of 17:22, 13 September 2017

Meeting Time and Place

The meeting will be on Wednesday September 13, 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

Simulation Reports

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

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: Alignment & Track/Shower Efficiencies

(i.e. Is the detector 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
    • Quick look at trigger simulation in channel omega->3pi

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: Miscellaneous Updates on experiment, simulation, and the comparison between the two.

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

The week after next: 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

The following week: Hit Efficiencies (i.e. Is the detector working?) Updates on experiment, simulation, and the comparison between the two.

  1. CDC Hit Efficiencies --- Naomi Jarvis
  2. FDC Hit Efficiencies --- Alex Austregesilo
  3. BCAL Hit Efficiencies --- Elton Smith
  4. FCAL Hit Efficiencies --- Jon Zarling

Minutes

Data Production

  1. Monitoring Update --- Thomas: things still looking good
  2. Processing Update --- Alex A.: Sean requested another monitoring launch over 2017 data. It is ~50% completed.
  3. Calibration Update --- Sean checked in on the progress for updates for the next reconstruction launch.
    • Naomi and Will shall check in their updates by the end of the week to check in the next monitoring launch.
    • We need more people to look at their kinematic fitter outputs to determine how accurate the current fit errors are.
    • Paul: Add in Simon's improvements of track extrapolation
  4. Justin showed some slides trying to understand the π0 yield run dependence
    • Difference between 2016 and 2017 yields remains.
    • Looking at run-by-run variations shows that the last FCAL HV set leads to loss of showers at larger FCAL radii.
    • This is supported by an analysis using a fiducial cut that removes this region. A ~20% drop in the high rate data remains. Various systematic effects/studies were discussed.
    • Eugene: Should look at fully charged modes to see if there is a similar effect.
    • Matt: The HV changes were generally small, order of 10 V. The resulting gain changes were ~10-20%.
    • Alex A.: What is the loss in acceptance due to the fiducial cut. Justin: Numbers not on hand, maybe ~30%.
  5. Simulations Update --- Sean showed a few slides with an initial check of the trigger simulation.
    • First step is consistency check running the algorithm on data. Physics trigger generally close, BCAL-only trigger agrees within ~20%
    • Alex S.: Agrees with his previous studies, known problems with mode 7 data.
    • Working on more detailed checks, reweighing of bggen events.
    • Paul M.: Please check rates of events where both triggers are fired.
    • Will do another mini-launch once next round of trigger simulation updates are in and tested
    • Looked at some FCAL monitoring plots, Matt and Elton reminded to make sure that only physics triggers are used.

Simulation Reports

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

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: Alignment & Track/Shower Efficiencies

(i.e. Is the detector 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
    • Quick look at trigger simulation in channel omega->3pi