[Halld-pid] Time-of-Flight Meeting Minutes, January 26, 2022

[Mark Ito]

Folks,

Please find the minutes here 
<https://halldweb.jlab.org/wiki/index.php/GlueX_TOF_Meeting,_January_26,_2022#Minutes> 
and below.

   -- Mark

      __________________________________


    GlueX TOF Meeting, January 26, 2022, Minutes

Present: Paul Eugenio, Mark Ito (chair), Sasha Ostrovidov, Simon Taylor, 
Beni Zihlmann

There is a recording of this meeting 
<https://jlab-org.zoomgov.com/rec/share/Kwf_wdPOjKEnvHO9-A9JVOH2POD3T9wr0zk06AATC4ArPL58iAwUfT8vHoyGTjlE.TaC1872_9yLMALTa> 
on the ZoomGov site. Use passcode: 8r2yJj at Q .


      Announcements

Mark announced that the renewal of the equipment loan agreement with FSU 
is past due. Paul mentioned that a large fraction of the items have been 
returned, but that there are indeed a few items that need renewal.


      Review of minutes from the last meeting

We went over the minutes from the meeting on December 1 
<https://halldweb.jlab.org/wiki/index.php/GlueX_TOF_Meeting,_December_1,_2021#Minutes>. 



        Gain Balancing

Beni reminded us that he adjusted voltage on all PMTs at the beginning 
of the PrimEx run to equalize gains.


        Calibration

Beni reported that he has completed timing calibrations for both the 
PrimEx and SRC runs. The results have been entered into the CCDB.


      Long-Term Detector Health

We looked over Matt Shepherd's email 
<https://halldweb.jlab.org/talks/2022/evaluating%20status%20of%20Hall%20D%20hardware%20and%20electronics.pdf> 
announcing a session at the February collaboration meeting on evaluating 
the status of Hall D hardware and electronics. We have just gone through 
an exercise of replacing PMTs identified as having reduced gain. That 
experience informs much of what we can say for maintaining the TOF into 
future years.

Paul will prepare a presentation.


      TOF II Trigger

Mark reported that the new firmware for the TOF did not get a trial 
during the last run. Sascha Somov is doing test with it this week. 
Testing will have to be done without the beam.

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