June 14, 2017, Production & Analysis Working Group
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Contents
Meeting Time and Place
The meeting will be on Wednesday June 14, 2017 at 2:00 pm EDT. For those people at Jefferson Lab, the meeting will be in room F326.
Meeting Connections
- To join via a Web Browser, go to the page [1] https://bluejeans.com/115815824.
- To join via Polycom room system go to the IP Address: 199.48.152.152 (bjn.vc) and enter the meeting ID: 115815824.
- 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
- More information on connecting to bluejeans is available.
Reconstruction & Analysis Studies Status
Agenda
- Announcements
- Data Production
- Analysis Focus
- This Week's Studies
- Any other studies
- 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
- Calibration Update --- Sean Dobbs
- Monitoring Update --- Thomas Britton
- Processing Update --- Alex Austregesilo
- Status of the last Spring 2016 production launch: done for runs 11366
- Status of the first Spring 2017 production launch: batch01 started on 06/12/17, almost at 10%
Analysis Focus: Total Cross Sections
- J/Ψ, φ update --- Lubomir
- η, ρ, ω, φ --- Simon
- φ --- Thomas
- ω --- Cristiano
- Any others?
Studies: Alignment & Track/Shower Efficiencies
(i.e. Is the reconstruction working?) Updates on experiment, simulation, and the comparison between the two.
- Drift chamber alignment --- Mike Staib
- Tracking Efficiencies --- Paul Mattione
- BCAL Shower Efficiencies --- Elton Smith
- FCAL Shower 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: Other Updates on experiment, simulation, and the comparison between the two.
- Track / Hit Matching: BCAL, FCAL, TOF, SC --- Paul Mattione, Simon
- Efficiencies: TOF, SC --- Beni, Mahmoud
- Means & Resolutions (time, energy, dE/dx): Tracking, BCAL, FCAL, SC, TOF
- Uncertainties: PID (BCAL, FCAL, TOF, dE/dx), Kinfit (BCAL, FCAL, tracking)
- Channel/Analysis Studies: Branching ratios, cross sections, SDMEs, beam asymmetries
- Other reconstruction/analysis issues
Week after next: Beamline & Triggering
- Flux --- Justin
- Beam energy --- Beamline Group
- Polarization (TPOL & lineshape) --- Beamline Group
- Beam Asymmetries --- Alex Austregesilo
- Trigger emulation --- Alex Somov
- 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.
- CDC Hit Efficiencies --- Naomi Jarvis
- FDC Hit Efficiencies --- Alex Austregesilo
- BCAL Hit Efficiencies --- Elton Smith
- FCAL Hit Efficiencies --- Jon Zarling
Minutes
- Talks: Summary/overviews only. Detailed discussions should be held in the appropriate working groups.
- Talks should be limited to 10 + 5 minutes.
Data Production
- Sean presented updates on the calibrations
- Low-rate running calibrations have been finalized and production started; high-rate data waiting on some final FCAL and TAGM calibrations
- Reminded all to not cut too tightly on the data. Several calibration improvements are in the works.
- Will update automated calibrations this summer, add more, study dependences between calibrations and variations during the run.
- Beni: Should add links to the code used for calibrations on the wiki page. More documentation before the next run is needed.
- Updating simulations is now a major focus, since they are needed for analyses.
- Thomas: Reconstruction monitoring hasn't worked since latest CC update. Otherwise, everything looks fine.
- Alex A. is at Indiana workshop, said that production of 2016 and corresponding analysis launch are finished. Data production was started Monday evening, current ~10% done with low-rate data. This projects to roughly ~40 days needed to reconstruct Spring 2017 data.
- Paul asked Sean and Mark I. about plans for a simulation launch. This launched a lot of discussion.
- Sean: Crucial issues are getting GlueX software working on OSG again (much progress by Richard J.) and matching MC smearing to data (less progress).
- Eugene: People should focus on matching simulation to data in order that we can deliver physics results. We likely need more manpower on this.
- Richard: hdgeant4 is still in bug-fix mode, comparisons of hdgeant and hdgeant4 can be covered in the offline software meeting.
- Most of the work in data/MC matching goes into mcsmear. Sean will organize discussions of this as part of this meeting and present a timeline for this work next meeting. We should aim for some time before the next run [Sept./Oct.].
Analysis Focus: Total Cross Sections
- Lubomir showed several updates with the new reconstruction of the 2016 data.
- He sees ~20% more J/psi, with somewhat worse resolution and more low-mass background. He also sees ~50% more phi's.
- Justin pointed out that a chi^2 cut is being used in this analysis, and this distribution significantly changed in the last production
- The recoil proton-only analysis looks worse.
- He also looked at rejecting backgrounds due to target excitations. This doesn't affect J/psi much, but can help backgrounds in the continuum region.
- He sees ~20% more J/psi, with somewhat worse resolution and more low-mass background. He also sees ~50% more phi's.
- Simon is looking at the t-dependence of his cross sections as a function of beam energy.
- Thomas is looking at the new version of the 2016 reconstructed data.
Studies: Alignment & Track/Shower Efficiencies
- Alignment: Thomas reported that with the new alignment, he is not seeing some of the track asymmetries that he was previously seeing.
- Paul has been on vacation and is currently focused on preparing for the next analysis launch.
- Jon is at the Indiana workshop.