Difference between revisions of "June 7, 2017, Production & Analysis Working Group"
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#* Status of the last Spring 2016 production launch | #* Status of the last Spring 2016 production launch | ||
#* Preparing for the first Spring 2017 production launch | #* Preparing for the first Spring 2017 production launch | ||
+ | # Comparison of pass-3 and pass-4 of Spring 2016 --- Curtis Meyer | ||
=== Analysis Focus: Total Cross Sections === | === Analysis Focus: Total Cross Sections === | ||
Line 52: | Line 53: | ||
# CDC Hit Efficiencies --- Naomi Jarvis | # CDC Hit Efficiencies --- Naomi Jarvis | ||
# FDC Hit Efficiencies --- Alex Austregesilo | # FDC Hit Efficiencies --- Alex Austregesilo | ||
+ | #* Comparison between 2016-02 [https://halldweb.jlab.org/wiki/images/c/cf/PseudoEff_ver03.png ver03] and [https://halldweb.jlab.org/wiki/images/5/58/PseudoEff_ver04.png ver04]: | ||
# BCAL Hit Efficiencies --- Elton Smith | # BCAL Hit Efficiencies --- Elton Smith | ||
# FCAL Hit Efficiencies --- Jon Zarling | # FCAL Hit Efficiencies --- Jon Zarling | ||
Line 84: | Line 86: | ||
# Trigger emulation --- Alex Somov | # Trigger emulation --- Alex Somov | ||
# Triggering efficiency --- Alex Somov | # Triggering efficiency --- Alex Somov | ||
+ | |||
+ | = Minutes = | ||
+ | |||
+ | === Announcements === | ||
+ | * There are some outstanding issues with the room reservation for this meeting. Paul M. can address this when he's back tomorrow. | ||
+ | |||
+ | === Data Production === | ||
+ | # Sean gave an update on calibrations. Essentially all calibrations for the first production launch are in. Higher-statistics calibrations done by Mark Dalton have significantly improved the BCAL time resolution. One final monitoring launch is needed for final checks. | ||
+ | #* Sean and Alex A. are working in consultation with Sandy to avoid Lustre usage problems at JLab. | ||
+ | # Alex A. updated on the status of data processing. | ||
+ | #* The good half of the spring 2016 data has been processed as "ver04". An analysis launch was immediately done for the spring 2016 data, which finished except for 2 jobs, which are currently being finished. | ||
+ | #* Another spring 2017 monitoring launch was started today, hopefully it will finish before the CC outage tomorrow. | ||
+ | #* Mark I. brought up that he had anecdotally heard that the current reconstruction ran a factor ~3 slower than previously. Simon had been looking into this, and replied that part of the difference was that we are reconstructing 8 particle hypotheses now instead of 8, but with the current alignment and calibration, we are also throwing away fewer tracks than we had before. | ||
+ | # Curtis showed a quick comparison of the eta pi+ pi- final state between ver03 and ver04 of the Spring 2016 data. After at 10% kinematic fit CL cut, there are ~30% more events in the ver04 data. | ||
+ | #* Simon stated that this agrees with the increased number of reconstructed tracks that he saw. | ||
+ | |||
+ | === Analysis Focus: Total Cross Sections === | ||
+ | # Simon reported that Thomas and he agreed on a looser kinfit CL cut of 10^-5 to compare their results. He is currently studying the results of simulations to understand the efficiencies with this cut. | ||
+ | # Thomas showed some intermediate results on his phi -> K+K- cross sections from Spring 2016, which include an improved treatment of the tagger. The cross sections vary more gradually, although there still appears to be an issue with the TAGH/TAGM boundary. He is looking into the reason for the lower cross sections at higher energy and will look at the new reconstruction of the data. | ||
+ | #* Matt suggested to use realistic angular distributions for the phi, which could make a large difference in this channel. | ||
+ | #* Sean suggested to look into using an average TOF inefficiency for simulation to better match data. | ||
+ | |||
+ | === Studies: Hit Efficiencies === | ||
+ | # Alex Austregesilo compared FDC psuedohit efficiencies between the two reconstruction passes, and found that the overall efficiency stayed near 90%, but varied more evenly over packages. | ||
+ | #* Sean suggested to check these with simulations. Alex A. reminded that we need better handling of cathode half strips in simulation. | ||
+ | # Elton reported that Mark D. is working on updating calibrations for the simulation with the same procedures used on the data. | ||
+ | # Jon is working on updated shower efficiencies for next week. He mentioned that he sees ~3x more combinations in his omega -> 3pi w/ missing photon analysis in the latest reconstruction. | ||
+ | #* Matt reminded us that he has a new graduate student at work using the LED data to obtain block-level efficiencies. |
Latest revision as of 15:39, 7 June 2017
Contents
Meeting Time and Place
The meeting will be on Wednesday June 7, 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
- Preparing for the first Spring 2017 production launch
- Comparison of pass-3 and pass-4 of Spring 2016 --- Curtis Meyer
Analysis Focus: Total Cross Sections
- J/Ψ, φ --- Lubomir
- η, ρ, ω, φ --- Simon
- φ --- Thomas xsec results update
- ω --- Christiano
- Any others?
Studies: 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
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.
- Drift chamber alignment --- Mike Staib
- Tracking Efficiencies --- Paul Mattione
- BCAL Shower Efficiencies --- Elton Smith
- FCAL Shower Efficiencies --- Jon Zarling
Week after next: 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
The following week: 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
Minutes
Announcements
- There are some outstanding issues with the room reservation for this meeting. Paul M. can address this when he's back tomorrow.
Data Production
- Sean gave an update on calibrations. Essentially all calibrations for the first production launch are in. Higher-statistics calibrations done by Mark Dalton have significantly improved the BCAL time resolution. One final monitoring launch is needed for final checks.
- Sean and Alex A. are working in consultation with Sandy to avoid Lustre usage problems at JLab.
- Alex A. updated on the status of data processing.
- The good half of the spring 2016 data has been processed as "ver04". An analysis launch was immediately done for the spring 2016 data, which finished except for 2 jobs, which are currently being finished.
- Another spring 2017 monitoring launch was started today, hopefully it will finish before the CC outage tomorrow.
- Mark I. brought up that he had anecdotally heard that the current reconstruction ran a factor ~3 slower than previously. Simon had been looking into this, and replied that part of the difference was that we are reconstructing 8 particle hypotheses now instead of 8, but with the current alignment and calibration, we are also throwing away fewer tracks than we had before.
- Curtis showed a quick comparison of the eta pi+ pi- final state between ver03 and ver04 of the Spring 2016 data. After at 10% kinematic fit CL cut, there are ~30% more events in the ver04 data.
- Simon stated that this agrees with the increased number of reconstructed tracks that he saw.
Analysis Focus: Total Cross Sections
- Simon reported that Thomas and he agreed on a looser kinfit CL cut of 10^-5 to compare their results. He is currently studying the results of simulations to understand the efficiencies with this cut.
- Thomas showed some intermediate results on his phi -> K+K- cross sections from Spring 2016, which include an improved treatment of the tagger. The cross sections vary more gradually, although there still appears to be an issue with the TAGH/TAGM boundary. He is looking into the reason for the lower cross sections at higher energy and will look at the new reconstruction of the data.
- Matt suggested to use realistic angular distributions for the phi, which could make a large difference in this channel.
- Sean suggested to look into using an average TOF inefficiency for simulation to better match data.
Studies: Hit Efficiencies
- Alex Austregesilo compared FDC psuedohit efficiencies between the two reconstruction passes, and found that the overall efficiency stayed near 90%, but varied more evenly over packages.
- Sean suggested to check these with simulations. Alex A. reminded that we need better handling of cathode half strips in simulation.
- Elton reported that Mark D. is working on updating calibrations for the simulation with the same procedures used on the data.
- Jon is working on updated shower efficiencies for next week. He mentioned that he sees ~3x more combinations in his omega -> 3pi w/ missing photon analysis in the latest reconstruction.
- Matt reminded us that he has a new graduate student at work using the LED data to obtain block-level efficiencies.