Run Planning Meeting Notes, September 23 - September 29, 2021

Thursday, September 23

1. In last 24 hours:
   • Early Riser summary https://logbooks.jlab.org/entry/3910318 (4am to 10am),
   • Owl summary https://logbooks.jlab.org/entry/3910862 (10pm to 4am)
   • Day summary https://logbooks.jlab.org/entry/3910458 (10am to 4pm),

  https://logbooks.jlab.org/entry/3910670 

1. • FCAL pi0 calibration and HV tuning started yesterday at 6 am, https://logbooks.jlab.org/entry/3910786
     • With PMT HVs, gains, and pedestals of run 73065
     • Then, we subtracted 6V to all PMT HV resulting in a reduction of roughly 5% on all gains
   • Sergey made a rapid access to the experimental hall to power cycle NIM crate
   • Beni changed the TOF HV a couple of times eg https://logbooks.jlab.org/entry/3910611
   • Sergey did a BCAL pedestal runs,
   • Sean time calibration https://logbooks.jlab.org/entry/3910464, https://logbooks.jlab.org/entry/3910484
   • Sasha adjusted tagh HV
2. Issues
   • Beni did look at the bleedthrough issue by analyzing timing for different run condition https://logbooks.jlab.org/entry/3910680, https://logbooks.jlab.org/entry/3910800
   • After entry to the experimental MCC struggle for almost one hour to send us beam
   • Sean time calibration pointed to tagm issues that Richard will address
   • FCAL issues, fADC died screwing the FCAL pi0 calibration run see report diphoton invariant mass distribution per ring https://halldweb.jlab.org/primexd/phase2/fcal2021_method0_period_2-g1/
3. Plan for the day
   • tagm studies by Richard
   • FDC straight track studies by Lubomir