Difference between revisions of "Analysis Day 2018JUL16"
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*[https://hallaweb.jlab.org/wiki/images/a/a2/ECC_VZ.pdf Endcap Subtraction] -- Tong | *[https://hallaweb.jlab.org/wiki/images/a/a2/ECC_VZ.pdf Endcap Subtraction] -- Tong | ||
* [https://wiki.jlab.org/tegwiki/images/c/c0/Ped_scan.pdf Pedestal Stability]-- Jason. [https://hallaweb.jlab.org/wiki/images/d/d7/Cal2_pmt10.png prl2 pmt10] | * [https://wiki.jlab.org/tegwiki/images/c/c0/Ped_scan.pdf Pedestal Stability]-- Jason. [https://hallaweb.jlab.org/wiki/images/d/d7/Cal2_pmt10.png prl2 pmt10] | ||
− | * | + | * [https://hallaweb.jlab.org/wiki/images/9/9e/Essential_Checks.pdf Data Quality Checks] -- Mike |
== Session: Systematic Effects == | == Session: Systematic Effects == | ||
Line 22: | Line 22: | ||
== Session: Wrap-up == | == Session: Wrap-up == | ||
− | * Priorities and Timeline | + | * Priorities and Timeline [https://redmine.jlab.org/projects/tritium-experiment/issues Redmine Task List] -- Evan |
= Minutes = | = Minutes = | ||
+ | ==SESSION: Calibrations== | ||
+ | |||
+ | *Mike- BCM Calibrations- | ||
+ | **use dnew in standard analysis | ||
+ | **use constant calibration for entire MARATHON run | ||
+ | **Javier- why is unew low for calibration #2? | ||
+ | |||
+ | *Tyler H- Raster Calibration- | ||
+ | **Javier- Did something in the beamline really change? ask the expert | ||
+ | **Javier- Does the carbon hole image get fuzzier with higher angle due to multiple scattering within the target? | ||
+ | **Need to make a plot for stability of current-to-mm calibration over the whole MARATHON run | ||
+ | **check BPM documents to find raster calibration stuff | ||
+ | |||
+ | *Jason- Runlists- | ||
+ | **get runlist info in mysql, add mysql runlist query functions to TriTools | ||
+ | |||
+ | *Tong- Endcap Contamination- | ||
+ | **downstream vertex-z moving: caused by mispointing, raster calibration, optics? | ||
+ | |||
+ | *Jason- Pedestal Stability- | ||
+ | **Hanjie- FADC class for S0, S2, and Cer calculates pedestal values event-by-event | ||
+ | |||
+ | *Mike- Data Quality Checks- | ||
+ | ** | ||
+ | |||
+ | |||
+ | ==SESSION: Systematics== | ||
+ | |||
+ | *Tong- December Boiling- | ||
+ | **Talk to Meekins: are we surprised that the boiling is non-linear? | ||
+ | **check target-z dependence of boiling | ||
+ | |||
+ | *Mike- Boiling- | ||
+ | **why are the events from the gas tilted (high at upstream, lower at downstream) | ||
+ | |||
+ | *Hanjie- No-track/Multi-track- | ||
+ | **use assumption of constant cosmic rate, predict zero track efficiency effect vs kinematic | ||
+ | |||
+ | *Tyler K- Tritium Decay- | ||
+ | **calculate effect of uncertainty in contamination factor on uncertainty in yield ratio | ||
+ | |||
+ | *Hanjie- Radiative Corrections- | ||
+ | **Check that you are actually using scattering angle, not just horizontal angle, for the radiative corrections | ||
+ | **Zhihong: bin centering- use simulation with radiative correction included | ||
+ | **Javier: bin centering- cut to stay away from edges, use model to get dependence of cross-section on x, Q^2 | ||
+ | **Makis: don't trust edge bins in x, plot each bite separately to look for discrepancies | ||
+ | **Zhihong: perhaps make tighter acceptance cuts on theta and phi | ||
+ | **check which model used in Dave Gaskells code | ||
+ | |||
+ | *Tong- Positrons- | ||
+ | **do data quality checks on Helium kin3 positron runs | ||
+ | |||
+ | ==SESSION 3== | ||
+ | |||
+ | *Tyler K- Event Viewer- | ||
+ | ** | ||
+ | *Tyler H- Batch Replays- | ||
+ | **clean up old replay directories, if any still exist | ||
+ | |||
+ | ==SESSION 4== | ||
+ | |||
+ | *Evan- Discussion: Moving Forward- | ||
+ | **Priority 1: | ||
+ | ***Anything that changes the database/code for pass2 | ||
+ | ****finalize calibrations (BCM, raster, beam energy, optics, etc.) | ||
+ | **energy and angle higher-order corrections | ||
+ | **optics matrix depends on accurate angle central value and mispointing numbers | ||
+ | ***decision on beam trip cut handling (cutting out ramp-up?) | ||
+ | ***Finalize Data Quality Checks | ||
+ | ****run lists | ||
+ | ****all suspicious runs identified and investigated | ||
+ | **Priority 2: | ||
+ | ***Systematics Studies | ||
+ | ****radiative corrections | ||
+ | ****tritium decay | ||
+ | ****positrons | ||
+ | ****endcap contamination | ||
+ | ****boiling | ||
+ | ****acceptance cuts | ||
+ | ****zero-track and multi-track events (decision: use only one-track events) | ||
+ | ***priority ordering (Makis)- | ||
+ | ****acceptance cuts (need to set standard cuts (PID: Hanjie track study)) | ||
+ | ****endcaps | ||
+ | ****boiling | ||
+ | ****positrons | ||
+ | ****tritium decay | ||
+ | ****binning | ||
+ | ****radiative corrections |
Latest revision as of 16:15, 16 July 2018
Contents
Agenda
- Welcome -- 9:00am
Session: Calibrations
- BCM Calibration-- Mike
- Raster Calibration -- Tyler H.
- Calibration Run Lists -- Jason
- Endcap Subtraction -- Tong
- Pedestal Stability-- Jason. prl2 pmt10
- Data Quality Checks -- Mike
Session: Systematic Effects
- December Boiling-- Tong
- March Boiling -- Mike
- Multi-track and No-track events -- Hanjie
- 3H Decay -- Tyler K
- Radiative Corrections -- Hanjie
- Positrons (slides) -- Tong
Session: Tools
- Event Viewer -- Tyler K
- Batch Replays -- Tyler H
Session: Wrap-up
- Priorities and Timeline Redmine Task List -- Evan
Minutes
SESSION: Calibrations
- Mike- BCM Calibrations-
- use dnew in standard analysis
- use constant calibration for entire MARATHON run
- Javier- why is unew low for calibration #2?
- Tyler H- Raster Calibration-
- Javier- Did something in the beamline really change? ask the expert
- Javier- Does the carbon hole image get fuzzier with higher angle due to multiple scattering within the target?
- Need to make a plot for stability of current-to-mm calibration over the whole MARATHON run
- check BPM documents to find raster calibration stuff
- Jason- Runlists-
- get runlist info in mysql, add mysql runlist query functions to TriTools
- Tong- Endcap Contamination-
- downstream vertex-z moving: caused by mispointing, raster calibration, optics?
- Jason- Pedestal Stability-
- Hanjie- FADC class for S0, S2, and Cer calculates pedestal values event-by-event
- Mike- Data Quality Checks-
SESSION: Systematics
- Tong- December Boiling-
- Talk to Meekins: are we surprised that the boiling is non-linear?
- check target-z dependence of boiling
- Mike- Boiling-
- why are the events from the gas tilted (high at upstream, lower at downstream)
- Hanjie- No-track/Multi-track-
- use assumption of constant cosmic rate, predict zero track efficiency effect vs kinematic
- Tyler K- Tritium Decay-
- calculate effect of uncertainty in contamination factor on uncertainty in yield ratio
- Hanjie- Radiative Corrections-
- Check that you are actually using scattering angle, not just horizontal angle, for the radiative corrections
- Zhihong: bin centering- use simulation with radiative correction included
- Javier: bin centering- cut to stay away from edges, use model to get dependence of cross-section on x, Q^2
- Makis: don't trust edge bins in x, plot each bite separately to look for discrepancies
- Zhihong: perhaps make tighter acceptance cuts on theta and phi
- check which model used in Dave Gaskells code
- Tong- Positrons-
- do data quality checks on Helium kin3 positron runs
SESSION 3
- Tyler K- Event Viewer-
- Tyler H- Batch Replays-
- clean up old replay directories, if any still exist
SESSION 4
- Evan- Discussion: Moving Forward-
- Priority 1:
- Anything that changes the database/code for pass2
- finalize calibrations (BCM, raster, beam energy, optics, etc.)
- Anything that changes the database/code for pass2
- energy and angle higher-order corrections
- optics matrix depends on accurate angle central value and mispointing numbers
- decision on beam trip cut handling (cutting out ramp-up?)
- Finalize Data Quality Checks
- run lists
- all suspicious runs identified and investigated
- Priority 2:
- Systematics Studies
- radiative corrections
- tritium decay
- positrons
- endcap contamination
- boiling
- acceptance cuts
- zero-track and multi-track events (decision: use only one-track events)
- priority ordering (Makis)-
- acceptance cuts (need to set standard cuts (PID: Hanjie track study))
- endcaps
- boiling
- positrons
- tritium decay
- binning
- radiative corrections
- Systematics Studies
- Priority 1: