Tracking Efficiency Uncertainty
17.11.2020, The charges to the task force
- Conduct systematic studies on the TPC single track efficiency uncertainty on a few standard datasets, e.g. AuAu200, BES, pp200 or 500 GeV etc. It will be preferred that the uncertainty can be evaluated more differentially in pT, eta/y, luminosity etc when statistics allows.
- Investigate on any possible improvement in the TPC simulator to improve the efficiency uncertainty, especially for the BES-II datasets.
- Expect a report from the task force (to be released as a STAR note) The report should include the above studies, as well as a description on standard procedures to evaluate the tracking efficiency uncertainty for other datasets.
- Timeline: about 6 months - 1 year. If the full efforts are expected to take longer than this, we expect a preliminary report focusing on the findings from 1) to be released in about 6 months.
Weekly meetings: 10:00 AM Eastern Time (US and Canada)
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Meeting ID: 160 703 5037
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Related documents, studies, and link to tool can be found HERE.
Tracking Efficiency Uncertainty meeting
2021-10-19 10:00
2021-10-19 11:00
America/New York
Tuesday, 19 October 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
Tracking Efficiency Uncertainty meeting
2021-10-12 10:00
2021-10-12 11:00
America/New York
Tuesday, 12 October 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
Minutes:
There was a discussion about using difference between extracted tracking efficiencies for different FXT collision energies. Accoording to Gene it is not clear if separate calibrations for individual collisions energies are needed and it is being now investigated by TPC group.
From discussion of previous Robert's results on probability of hit loss on track it seem that there is higher chance to loose hits in lower pat of the TPC in data compared to simulation. This is bit strange in light of Xianglei's findings about cluster simulations as showed at collaboration meeting. It was suggested that incomplete accounting of dead channels could play a role.
There was a discussion about using difference between extracted tracking efficiencies for different FXT collision energies. Accoording to Gene it is not clear if separate calibrations for individual collisions energies are needed and it is being now investigated by TPC group.
From discussion of previous Robert's results on probability of hit loss on track it seem that there is higher chance to loose hits in lower pat of the TPC in data compared to simulation. This is bit strange in light of Xianglei's findings about cluster simulations as showed at collaboration meeting. It was suggested that incomplete accounting of dead channels could play a role.
Tracking Efficiency Uncertainty meeting
2021-10-05 10:00
2021-10-05 11:00
America/New York
Tuesday, 5 October 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
Tracking Efficiency Uncertainty meeting
2021-09-28 10:00
2021-09-28 11:00
America/New York
Tuesday, 28 September 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
Minutes:
GMT-There is currently ongoing comparison of hits and projections on track-by-track basis. It is not known what causes the difference between the hits projections, but the pinpointed to a P18im library.
K->3pi
It was discussed that after Xianglei tuned the cluster size for isobar data it would be good to compare to them to see the influence on this study.
GMT-There is currently ongoing comparison of hits and projections on track-by-track basis. It is not known what causes the difference between the hits projections, but the pinpointed to a P18im library.
K->3pi
It was discussed that after Xianglei tuned the cluster size for isobar data it would be good to compare to them to see the influence on this study.
| Time | Talk | Presenter |
|---|---|---|
| 09:00 | Update on K->3pi after coll. meeting ( 00:20 ) 1 file | Petr Chaloupka |
Tracking Efficiency Uncertainty meeting
2021-09-21 10:00
2021-09-21 11:00
America/New York
Tuesday, 21 September 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
| Time | Talk | Presenter |
|---|---|---|
| 09:00 | update on pp embedding ( 00:20 ) 1 file | Petr for Robert Licenik |
| 09:20 | Systematic error from K->3pi in 7.7 GeV ( 00:20 ) 1 file | Petr Chaloupka |
Tracking Efficiency Uncertainty meeting
2021-09-14 10:00
2021-09-14 11:00
America/New York
Tuesday, 14 September 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
Tracking Efficiency Uncertainty meeting
2021-09-07 10:00
2021-09-07 11:00
America/New York
Tuesday, 7 September 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
| Time | Talk | Presenter |
|---|---|---|
| 09:00 | k->3pi Update ( 00:20 ) 1 file | Petr Chaloupka |
Tracking Efficiency Uncertainty meeting
2021-08-31 10:00
2021-08-31 11:00
America/New York
Tuesday, 31 August 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
Tracking Efficiency Uncertainty meeting
2021-08-24 10:00
2021-08-24 11:00
America/New York
Tuesday, 24 August 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
| Time | Talk | Presenter |
|---|---|---|
| 09:00 | GMT alignment in run14 data ( 00:20 ) 1 file | Stepan Manukhov |
Tracking Efficiency Uncertainty meeting
2021-08-17 10:00
2021-08-17 11:00
America/New York
Tuesday, 17 August 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
Tracking Efficiency Uncertainty meeting
2021-08-10 10:00
2021-08-10 11:00
America/New York
Tuesday, 10 August 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
Minutes:
Grigory update on GMT: Based on the 2016 data, there is are hits found in all detectors (except one which is dead for long time).
The missing signal observed by David is related to the cuts which are imposed on the hits.
We will now rerun the alignment using under DEV2 on run14 AuAu@15GeV data.
https://drupal.star.bnl.gov/STAR/system/files/GmtSoftware_TrkEffTF.pdf
Based on discussion with Yuri:
a) There is possible difference between online and offline cluster-finder. This could cause a difference in the hit finding efficiency at the edges of the TPC sectors. More details can be found at
https://drupal.star.bnl.gov/STAR/blog/fisyak/tpc-online-and-offline-clusters
b) For fixed-target the effects of space-charge are effectively reducing a TPC fiducial volume by 15 cm. This needs to be studied. The available data sets are at https://drupal.star.bnl.gov/STAR/blog/fisyak/status-express-production-run-xxi. From these the best seems to be 3p85GeV_fixedTarget_2021 since 7p7 comes from two luminosity periods.
Grigory update on GMT: Based on the 2016 data, there is are hits found in all detectors (except one which is dead for long time).
The missing signal observed by David is related to the cuts which are imposed on the hits.
We will now rerun the alignment using under DEV2 on run14 AuAu@15GeV data.
https://drupal.star.bnl.gov/STAR/system/files/GmtSoftware_TrkEffTF.pdf
Based on discussion with Yuri:
a) There is possible difference between online and offline cluster-finder. This could cause a difference in the hit finding efficiency at the edges of the TPC sectors. More details can be found at
https://drupal.star.bnl.gov/STAR/blog/fisyak/tpc-online-and-offline-clusters
b) For fixed-target the effects of space-charge are effectively reducing a TPC fiducial volume by 15 cm. This needs to be studied. The available data sets are at https://drupal.star.bnl.gov/STAR/blog/fisyak/status-express-production-run-xxi. From these the best seems to be 3p85GeV_fixedTarget_2021 since 7p7 comes from two luminosity periods.
Tracking Efficiency Uncertainty meeting
2021-08-03 10:00
2021-08-03 11:00
America/New York
Tuesday, 3 August 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
| Time | Talk | Presenter |
|---|---|---|
| 09:00 | k->3pi update ( 00:20 ) 1 file | Petr Chaloupka |
Tracking Efficiency Uncertainty meeting
2021-07-27 10:00
2021-07-27 11:00
America/New York
Tuesday, 27 July 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
Tracking Efficiency Uncertainty meeting
2021-07-20 10:00
2021-07-20 11:00
America/New York
Tuesday, 20 July 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
Tracking Efficiency Uncertainty meeting
2021-07-13 10:00
2021-07-13 11:00
America/New York
Tuesday, 13 July 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
Tracking Efficiency Uncertainty meeting
2021-07-06 10:00
2021-07-06 11:00
America/New York
Tuesday, 6 July 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
Tracking Efficiency Uncertainty meeting
2021-06-29 11:45
2021-06-29 12:00
America/New York
Tuesday, 29 June 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 15:45 (GMT), duration : 00:15
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 15:45 (GMT), duration : 00:15
Tracking Efficiency Uncertainty meeting
2021-06-22 10:00
2021-06-22 11:00
America/New York
Tuesday, 22 June 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
| Time | Talk | Presenter |
|---|---|---|
| 09:00 | single track efficiency from KFP ( 00:20 ) 1 file | Petr Chaloupka |
Tracking Efficiency Uncertainty meeting
2021-06-15 10:00
2021-06-15 11:00
America/New York
Tuesday, 15 June 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
Tracking Efficiency Uncertainty meeting
2021-06-08 10:00
2021-06-08 11:00
America/New York
Tuesday, 8 June 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
Note:
The observed difference beween SL12 and SL13 seems to hold even when the same daq files are ruconstructed manually under SL12d_embed.
I was suggested that the likely cause is some difference between vertex finder and related track cuts introduced into SL13 library.
The observed difference beween SL12 and SL13 seems to hold even when the same daq files are ruconstructed manually under SL12d_embed.
I was suggested that the likely cause is some difference between vertex finder and related track cuts introduced into SL13 library.
| Time | Talk | Presenter |
|---|---|---|
| 09:00 | Embedding in 2012 pp vs data ( 00:20 ) 1 file |