[Halld-pid] TOF DAQ Planning Meeting Mintutes, July 8, 2014

[Mark M. Ito]

Folks,

Find the minutes of the meeting below and at 
https://halldweb1.jlab.org/wiki/index.php/TOF_DAQ_Planning_Meeting,_July_8,_2014#Minutes 
.

   -- Mark
__________________________________________

TOF DAQ Planning Meeting, July 8, 2014
Minutes

    Present:
      * FSU: Brad Cannon, Paul Eugenio, Sasha Ostrovidov, Aristeidis Tsaris
      * JLab: Hussein Al Ghoul, Sergey Furletov, Mark Ito (chair), Sascha
        Somov, Mike Staib, Beni Zihlmann

Event Display

    Aristeidis showed an [17]simulated event that has the TOF geometry
    incorporated. ADC hits are shown on the ends. TDC hits will be drawn as
    bars with and indicator along the length positioned by the time
    difference.

Work in the Hall

    Hussein reported that the bad splitter has been replaced. He needs to
    take data to confirm the fix.

TOF Cosmic Trigger

    Sascha showed an [18]event taken with the cosmic trigger. ADC raw
    pulses are shown. New this time is the TDC information. The
    uncalibrated time difference was used to determine hit position,
    indicated with a red dot, and it does a pretty good job despite lack of
    calibration.

    The trigger is sent out of the front panel of the CTP and goes into the
    TI as an external trigger.

    Sasha reported on problems found and fixed:
      * A TDC, which receives two sets of 16 channels from separate
        discriminators, had those two sets swapped.
      * The pedestal values had to be reset with another calibration run.
        Some of them seem to have drifted.
      * One of the flashes had a bad ADC data bit for all 32 channels. The
        board was replaced.
      * The flashes needed a firmware update.

Data Acquisition Tasks

    We reviewed a long list of [19]possible areas for work. There was some
    discussion:
      * David reported that we would have the ability to read both forms of
        TOF data into JANA very soon.
      * The FSU team is keen to get the discriminator scalar read-out
        going. We decided to try and get the code from Sergey Boiarinov to
        do this. Although eventually these values will be served out by
        EPICS, that step is not necessary right now. Sergey F. will talk to
        Sergey B.

FSU Travel

    Hussein is going back to Florida tomorrow. Paul and Sasha O. will be at
    JLab next week.

Meeting Frequency

    We briefly discussed going to weekly TOF meetings for a while. The next
    bi-weekly meeting is just over a week away; we will discuss it further
    then.

References

   17. https://halldweb1.jlab.org/wiki/images/f/fe/Tof-hdview2.png
   18. https://logbooks.jlab.org/entry/3289258
   19. https://halldweb1.jlab.org/wiki/index.php/TOF_DAQ_Tasks,_July_8,_2014

-- 
Mark M. Ito, Jefferson Lab, marki at jlab.org, (757)269-5295