Difference between revisions of "Π polarizability Meeting May 19, 2021"
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== Minutes == | == Minutes == | ||
− | '' Attending: | + | '' Attending: Alex, Andrew, Beni, David, Ilya, Mark, Rory, Simon, Elton |
+ | |||
+ | # Previous CPP meeting: [[π polarizability Meeting May 12, 2021|May 12, 2021]] | ||
+ | # Announcements | ||
+ | #* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4668 Screen shots of detector from Stephanie] | ||
+ | # Action Items | ||
+ | # [[CPP and NPP Readiness Review]] | ||
+ | # [https://drive.google.com/drive/folders/1aiSOVh4zWwnObV5fA0eF-OXG8YbE14pO?usp=sharing Responses to the ERR]. This link points to the draft response to the ERR. | ||
+ | #* Rory has drafted a response to the questions about MWPC efficiency. | ||
+ | #* Send Rory comments on the document. David has already done so. | ||
+ | # hdgeant4 updates (Beni and Simon) | ||
+ | #* Mother volume changed to 'site' so that it would not overlap with FCAL | ||
+ | #* Added dead region of 10x10 cm2 into a non-sensitive area. | ||
+ | #* All changes in the xml, so no changes needed in the hdgeant4 code (Richard's recommendation) | ||
+ | #* 2" circular beam hole aperture for beam. | ||
+ | #* Rory: Plans to update document with best estimates of the Al honey comb. At the moment a reasonable composite is used | ||
+ | #* Added Pb picture frame to the geometry | ||
+ | #* Beni: Added geometry file to ccdb. Also included a material file in both the default and the mc_cpp versions | ||
+ | #* Rory: Note that the '''wire spacing is 0.4 in. (not 1.0 cm)'''. Over the length of the chamber that translates into over an accumulation of 2 cm. | ||
+ | #* Beni will make the appropriate change to hdgeant4 and place the beam half way between wires 72 and 73. | ||
+ | #* [https://logbooks.jlab.org/entry/3877374 Log Entry 3877374] Plugin with latest changes | ||
+ | # Rory: Inquired about the progress on matching muon tracks to single hits in FCAL | ||
+ | #* Simon: Code is on a branch that will do this. There is not intention of elevating single hits to FCAL showers. However, a list of hits in FCAL will be available for matching to tracks. He continues to work on this. | ||
+ | #* Rory: would like Andrew and Albert to get back to this issue this summer. | ||
+ | # GlueX Data Analysis (Andrew) | ||
+ | #* Continues to work on BH analysis of GlueX data. | ||
+ | #* Finds differences between data and MC in the elasticity variable. | ||
+ | #* Empirical adjustments to the FCAL energy allows the MC to match the data. | ||
+ | #* Checks with omegas look good | ||
+ | #* Checks with pi0->gamma e+e- show anomalies. | ||
+ | #* Results of training, shows anomalies in the pid variables, asymmetric between positive and negatives. | ||
+ | #* After matching e+ and e- separately, MC matches data, but e+ and e- elasticity variables are slightly different (as they are for data). A second adjustment brings e+ and e- together | ||
+ | #* After training with the new distributions, the pid variables continue to show anomalies in the difference between positive and negatives. Work is ongoing. | ||
+ | # CPP Software | ||
+ | # PID + AI | ||
+ | # Other business | ||
+ | # Next meeting |
Latest revision as of 11:51, 19 May 2021
Meeting Time And Location
09:00 EST (JLab time) Weekly Meeting
REMOTE during Covid-19
Connecting
You can connect using BlueJeans Video conferencing (ID: 949 429 419). (Click "Expand" to the right for details -->):
- Make sure you have created a BlueJeans account via your JLab CUE account using this link:
- http://jlab.bluejeans.com (You should only need to do this once)
- Meeting ID: 949 429 419
- (you may need to type this in, depending how you connect)
- If connecting via Web Browser: click this link (no passcode is needed):
- If connecting via iOS or Android App:
- Use your JLab e-mail address to log in and then enter the meeting ID given above to join the meeting
- If connecting via Phone: Dial one of the following numbers and then enter the meeting ID above and hit "#" or "##"
- Dial: (408) 740-7256 (US or Canada only)
- or, List of International Numbers
- If connecting via Polycom unit:
- Dial 199.48.152.152 or bjn.vc
- Enter meeting ID above
Action Items
Preliminary Agenda
- Previous CPP meeting: May 12, 2021
- Announcements
- Screen shots of detector from Stephanie
- Action Items
- CPP and NPP Readiness Review
- Responses to the ERR. This link points to the draft response to the ERR.
- hdgeant4 updates (Beni and Simon)
- Log Entry 3877374 Plugin with latest changes
- GlueX Data Analysis
- CPP Software
- PID + AI
- Other business
- Next meeting
Minutes
Attending: Alex, Andrew, Beni, David, Ilya, Mark, Rory, Simon, Elton
- Previous CPP meeting: May 12, 2021
- Announcements
- Action Items
- CPP and NPP Readiness Review
- Responses to the ERR. This link points to the draft response to the ERR.
- Rory has drafted a response to the questions about MWPC efficiency.
- Send Rory comments on the document. David has already done so.
- hdgeant4 updates (Beni and Simon)
- Mother volume changed to 'site' so that it would not overlap with FCAL
- Added dead region of 10x10 cm2 into a non-sensitive area.
- All changes in the xml, so no changes needed in the hdgeant4 code (Richard's recommendation)
- 2" circular beam hole aperture for beam.
- Rory: Plans to update document with best estimates of the Al honey comb. At the moment a reasonable composite is used
- Added Pb picture frame to the geometry
- Beni: Added geometry file to ccdb. Also included a material file in both the default and the mc_cpp versions
- Rory: Note that the wire spacing is 0.4 in. (not 1.0 cm). Over the length of the chamber that translates into over an accumulation of 2 cm.
- Beni will make the appropriate change to hdgeant4 and place the beam half way between wires 72 and 73.
- Log Entry 3877374 Plugin with latest changes
- Rory: Inquired about the progress on matching muon tracks to single hits in FCAL
- Simon: Code is on a branch that will do this. There is not intention of elevating single hits to FCAL showers. However, a list of hits in FCAL will be available for matching to tracks. He continues to work on this.
- Rory: would like Andrew and Albert to get back to this issue this summer.
- GlueX Data Analysis (Andrew)
- Continues to work on BH analysis of GlueX data.
- Finds differences between data and MC in the elasticity variable.
- Empirical adjustments to the FCAL energy allows the MC to match the data.
- Checks with omegas look good
- Checks with pi0->gamma e+e- show anomalies.
- Results of training, shows anomalies in the pid variables, asymmetric between positive and negatives.
- After matching e+ and e- separately, MC matches data, but e+ and e- elasticity variables are slightly different (as they are for data). A second adjustment brings e+ and e- together
- After training with the new distributions, the pid variables continue to show anomalies in the difference between positive and negatives. Work is ongoing.
- CPP Software
- PID + AI
- Other business
- Next meeting