Difference between revisions of "Minutes - XEM Minutes"

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==Meeting Information==
 
==Meeting Information==
−
Current meeting information:
+
:Meeting Place: Virtual - Bluejeans
−
Meeting Place: Virtual - Bluejeans
+
:Meeting Time: Tuesday, 11:30 EST
−
Meeting Time: Tuesday, 11:30 EST
+
:Meeting Link: Refer to the weekly reminder email or calendar event for connection information.
−
Meeting Link: Refer to the weekly reminder email or calendar event for connection information.
 
  
−
===Meeting Minutes===
+
===Previous Meeting Minutes===
−
;Tuesday September 7th, 2021
+
Abishek
−
:Set up a task list and meeting minutes page on the XEM wiki (THIS ONE!)
+
;Plotting in xi different Q2 values for this setting.
−
====Current Tasks====
+
:Still working on ratio vs. density
−
Run the XEM model for 5.1 GeV EMC data.
+
::Look at dummy and carbon target to map out any ytar dependence.
 +
;Ryan may be sharing densities for next week.
 +
:John's OG calculation, Dave's PRL values, recent values
 +
:Ryan's density extraction technique
 +
Casey
 +
;Parameterizing kinematically forbidden contribution to cryo targs
 +
:Get resolution at X=2 from SIMC using a 'heavy' proton.
 +
:Check 5.1GeV hydrogen at X>1 to check kinematically forbidden events.
 +
Cameron
 +
;Cherenkov Cal. documentation
 +
:PMTs are fine with lower HV and better voltages.
 +
:Dave's comment on cer cal:
 +
::Simply fit the HGC photoelectron peak and move on. (with reasonable timing cuts)
 +
::Follow Simona's second technique for the NGC.
 +
::FADCs aren't great for Cerenkov.  Integrating ADCs would be better because they integrate the whole distribution.
 +
:::Cer is always run in mode 10 during pion_lt exp, which saves everything. (Can treat fADCs like IADCs this way)
  
−
Burcu Work:
+
===Current Tasks===
−
  Not currently working on any analysis as of now:
+
;Burcu
−
Planning to do: Look at pi/e- ratios for X>1 data.
+
:Looking at pi/e- ratios for X>1 data.
−
Use Abishek’s information Abishek came up with (using existing data)
+
:* x>1 data is well above the pion threshold of 4.65 GeV and the pion sample is contaminated.
−
 Decide on Noble Gas Cherenkov gas mix, etc for upcomming week
+
:*Based on the study need to decide on Noble Gas Cherenkov gas mix, unless we opt out using it (hopefully for upcoming week).
−
 Hopefully avail for next week.
+
;Casey
−
Planning to help with analysis tasks:
+
: Write-up calibration procedures for XEM hodoscope, and calorimeter.
−
 Where she can start
+
:* Illustrate the usefulness of the diagnostic plots.
−
Dave Gaskell:
+
: Run the XEM model for all EMC settings
−
*Might get done by near.
+
: Find what is happening to the YTrack= -2.5 blocks pulseInt
−
Log entry on cryo target density uncertainty.   
+
: Open the reference time windows for the 2019 data slightly.  Include random hits, which should be removed by good electron cuts.
−
Not consistent with what Dave has heard in the past.
+
: Work on tracking in 2018 data.  Pruning algorithm work
−
Bill has values like 0.6%, which is starteling
+
:* Ali from Pion_LT running has some scripts / plots to help in this process.
−
Look at target boiling.  Determine difference between Dave Mack and our values.  Don’t know why they should be different.
+
:*Possibly narrow the windows to select just the main peak?
−
Bill sent data for Dave to play with
+
;Dave
−
EMC ratio anomaly, where it is not yet correct.   
+
EMC ratio anomaly, where it is not yet correct.   
−
Nievely use Dave Mack’s boiling value moves in the correct direction, so related.
+
;Abishek
−
 
+
: Working on the point-to-point dependence of the error on acceptance.
−
Abishek:
+
: Must add ‘added error’ to all momentum settings.
−
Working on the point-to-point dependence of the error on acceptance.
+
:*Added error is until the Chi-2 value goes to ~1 per DOF.  This is the ideal value, and this will give us an idea of the point-to-point error associated with the acceptance. **
−
Acceptance studies – did not include error bars on acceptance studies, and stat. error was ~1.2%
+
:* Possibly combine the two settings that have okay ratios (Data/MC) across the acceptance.
−
Adding error bars, very sensitive to statistical errors. 
 
−
Must add ‘added error’ to all momentum settings.
 
−
**Added error is until the Chi-2 value goes to ~1 per DOF.  This is the ideal value, and this will give us an idea of the point-to-point error associated with the acceptance. **
 
−
** Possibly combine the two settings that have okay ratios (Data/MC) across the acceptance.
 
 
Systematic tracking efficiency is hard to pin down.  Rel. Uncert. Comes from Deb’s study from rate dependence.   
 
Systematic tracking efficiency is hard to pin down.  Rel. Uncert. Comes from Deb’s study from rate dependence.   
−
Abishek will be looking at EMC ratio with correct target thickness.  Need to add Boron-11 final value.
+
;Cameron
−
 
+
: Work through reference time and timing window cuts.
−
Cameron was on Shift – Did carbon hole centering.
 
  
−
Put files on CDAQ machine.
+
===Recently Completed===
 +
;Aishek
 +
: Isotopic purity assessment of boron targets
 +
: Carbon target EMC ratio with Dave M's boiling slopes. (still 2% off)
 +
: Looked at the EMC ratios with mc-single-arm detector checks turned off.
 +
;Dave
 +
:Log entry on cryo target density uncertainty
 +
:Look at target boiling difference between Dave Mack and our values.
 +
;Burcu
 +
: Reproduced Abishek's pion contamination (PC) study with the 21 deg EMC data (C and LD2).
 +
: Discussed the impact of the pre-shower and trigger cuts (ELHI and ELLO) on the PC study.
 +
;Casey
 +
: Set up analysis location on CDAQ machine (XEM-2022).
 +
: Ran the hodoscope calibration and improved the fit range of velocity and cable length difference.
 +
: Looked at possible problems with X>1 calorimeter calibration.
 +
: Checked 2019 kinematicaly forbidden range
 +
;Cameron
 +
: Many, many shifts.

Latest revision as of 12:14, 28 September 2021

Meeting Information

Meeting Place: Virtual - Bluejeans
Meeting Time: Tuesday, 11:30 EST
Meeting Link: Refer to the weekly reminder email or calendar event for connection information.

Previous Meeting Minutes

Abishek

Plotting in xi different Q2 values for this setting.
Still working on ratio vs. density
Look at dummy and carbon target to map out any ytar dependence.
Ryan may be sharing densities for next week.
John's OG calculation, Dave's PRL values, recent values
Ryan's density extraction technique

Casey

Parameterizing kinematically forbidden contribution to cryo targs
Get resolution at X=2 from SIMC using a 'heavy' proton.
Check 5.1GeV hydrogen at X>1 to check kinematically forbidden events.

Cameron

Cherenkov Cal. documentation
PMTs are fine with lower HV and better voltages.
Dave's comment on cer cal:
Simply fit the HGC photoelectron peak and move on. (with reasonable timing cuts)
Follow Simona's second technique for the NGC.
FADCs aren't great for Cerenkov. Integrating ADCs would be better because they integrate the whole distribution.
Cer is always run in mode 10 during pion_lt exp, which saves everything. (Can treat fADCs like IADCs this way)

Current Tasks

Burcu
Looking at pi/e- ratios for X>1 data.
  • x>1 data is well above the pion threshold of 4.65 GeV and the pion sample is contaminated.
  • Based on the study need to decide on Noble Gas Cherenkov gas mix, unless we opt out using it (hopefully for upcoming week).
Casey
Write-up calibration procedures for XEM hodoscope, and calorimeter.
  • Illustrate the usefulness of the diagnostic plots.
Run the XEM model for all EMC settings
Find what is happening to the YTrack= -2.5 blocks pulseInt
Open the reference time windows for the 2019 data slightly. Include random hits, which should be removed by good electron cuts.
Work on tracking in 2018 data. Pruning algorithm work
  • Ali from Pion_LT running has some scripts / plots to help in this process.
  • Possibly narrow the windows to select just the main peak?
Dave

EMC ratio anomaly, where it is not yet correct.

Abishek
Working on the point-to-point dependence of the error on acceptance.
Must add ‘added error’ to all momentum settings.
  • Added error is until the Chi-2 value goes to ~1 per DOF. This is the ideal value, and this will give us an idea of the point-to-point error associated with the acceptance. **
  • Possibly combine the two settings that have okay ratios (Data/MC) across the acceptance.

Systematic tracking efficiency is hard to pin down. Rel. Uncert. Comes from Deb’s study from rate dependence.

Cameron
Work through reference time and timing window cuts.

Recently Completed

Aishek
Isotopic purity assessment of boron targets
Carbon target EMC ratio with Dave M's boiling slopes. (still 2% off)
Looked at the EMC ratios with mc-single-arm detector checks turned off.
Dave
Log entry on cryo target density uncertainty
Look at target boiling difference between Dave Mack and our values.
Burcu
Reproduced Abishek's pion contamination (PC) study with the 21 deg EMC data (C and LD2).
Discussed the impact of the pre-shower and trigger cuts (ELHI and ELLO) on the PC study.
Casey
Set up analysis location on CDAQ machine (XEM-2022).
Ran the hodoscope calibration and improved the fit range of velocity and cable length difference.
Looked at possible problems with X>1 calorimeter calibration.
Checked 2019 kinematicaly forbidden range
Cameron
Many, many shifts.
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