TODO reprocessing 2017-01 data

Things to do before reprocessing the 2017 data with the latest software

Everyone should recheck their calibrations. Hopefully this should be pretty straightforward.

Run-dependent Calibrations

Calibration	Person	Status
Overall Timing	Sean Dobbs
BCAL TDC 32 ns offsets	Mark Dalton
BCAL run timing	Mark Dalton
FCAL pedestal	Igal Jaegle
CDC wire gains	Naomi Jarvis	done, before v55
CDC dE/dx	Naomi Jarvis	first go done, need to redo after TTOD finishes
CDC time-to-distance	Naomi Jarvis	recalibrated once after setting new start values, again after v55
FDC fine timing	Alex Austregesilo	done (11/20/24), will show up in ver56
PS/PSC Timing	Sasha Somov
SC gain	Beni Zihlmann	done, will show up in ver 56
TAGH timewalks	?	not needed, no improvement in procedure. Need to check MC matching?
TAGM timewalks	Richard Jones
TOF	Beni Zihlmann	done

Overall Calibrations

Calibration	Person	Status
BCAL channel timing	Mark Dalton
BCAL attenuation length/gain ratio	Mark Dalton
BCAL z-position	Mark Dalton
BCAL gains/non-linearities	Igal Jaegle
FCAL gains/non-linearities	Igal Jaegle
FCAL timing	Igal Jaegle
SC Timewalks	Viviana Flechas
SC Propagation Time	Viviana Flechas
Beam spot	Simon Taylor
Start Counter alignment	Simon Taylor

Simulation

Quantity	Person	Run Range
CDC hit thresholds	Naomi Jarvis	these did not change
CDC wire mc efficiency	Naomi Jarvis	done, 30000-39999
FCAL block efficiencies	Susan Schadmand
FCAL block quality	Igal Jaegle
FDC wire efficiencies	Alex Austregesilo

Old List

Need to do

• Analyze the FCAL LED skim
  • Extract pedestals for each run
  • Bad blocks table for each run
• Recalibrate inner FCAL blocks
  • Igal says that if we keep the same 2 calibration periods, he is ready to recalibrate and this should take maybe a couple of weeks
    • Gains (2 tables)
      • 93676 2017-11-16 10-03-20 2017-11-16 10-03-20 default 30000L-30788L
      • 84661 2017-11-07 21-46-51 2017-11-07 21-46-51 default 30789L-inf
    • Pedestals (3 tables)
      • 55748 2017-04-04 08-31-43 2017-04-04 08-31-43 default 30992L-inf
      • 55747 2017-04-04 08-30-47 2017-04-04 08-30-47 default 30400L-30991L
      • 55746 2017-04-04 08-30-23 2017-04-04 08-30-23 default 30000L-30399L
    • Timing offsets (1 table)
      • 82585 2017-10-27 12-55-09 2017-10-27 12-55-09 default 30000L-inf
  • Decide if we should use the Primex calibration procedure
  • Also decide if we should use log-weighted or weighted mean (current default) position
  • Igal: Simon is working on finalizing the Island reconstruction algorithm - maybe we want to use this instead
• Update CDC calibrations
• Decide whether to raise the CDC thresholds in software
• Check tagger calibrations
• Update TOF calibrations
• Fix alignment of start counter
• Benchmark reconstruction software against 2019-11 software version
• Revisit how we handle pedestals (Reference)

Would like to do

• Figure out drift chamber alignment
• study matching to single FCAL blocks
  • not that important
• detailed tagger energy calibration

Beam energy reconstructed with exclusive rho events

• better calibration of high energy FCAL showers

Which skims to use

We changed several things about the skimming during the run, since that was the first real physics run. So I suggest looking at the skims from the recent recon launch:

• /mss/halld/RunPeriod-2017-01/recon/ver04

• FCAL
  • skim_pi0fcal/
  • FCAL-LED/

FCAL plots

pi0 mass for inner blocks in run period 2017-01 (run 30730) - 25 April 2022 (pdf)

pi0 mass for inner blocks in run period 2018-08 (run 51227) - 25 April 2022 (pdf)

pi0 mass for inner blocks In run period 2017-01 (note that these plots were made using the pi0 skims, whereas the above plots were made with the full raw data, so ignore this plot!! the pi0 skims explicitly rejected in the inner FCAL layers)- 20 April 2022