Minutes of the May 29 TOF/SC Meeting

["Mark M. Ito" <marki@jlab.org>]

Find them at 
http://www.jlab.org/Hall-D/software/wiki/index.php/Time-of-Flight/Start-Counter_Meeting%2C_May_29%2C_2009#Minutes 
and attached as text.

Minutes

     * JLab: Mark Ito, Sascha Somov, Simon Taylor, Elliott Wolin
     * FSU: Paul Eugenio, Sasha Ostrovidov


Status of Time-of-Flight Work at FSU

   Paul and Sasha reported on progress and plans.
     * They are assembling new trigger counters for the test set-up.
     * With the machine shop, Paul is working on a realistic light guide
       prototype. He showed us [15]his working drawing. They will start by
       making one, then bend and test it.
     * Elliott will get a flash ADC to send to FSU. The P0 connector on
       their 64X crate is causes physical interference with the ADC and
       will have to be removed. (JLab people are dealing with the same
       issue on their 64X crates.)
     * FSU has purchased the CAEN constant fraction discriminator formerly
       on loan to them.
     * Sasha O. outlined plans for the test set-up.
          + He will to try to improve time resolutions, currently at 600
            ps using a leading-edge discriminator. Will try a
            constant-fraction discriminator.
          + Will measure efficiency of trigger, end left, end right, using
            scalers.
     * Paul looking at hiring an undergraduate to help with measurements
       and software improvements.
     * Sascha S. raised the question of auxiliary trigger types for the
       TOF detectors. These may impact the design of trigger electronics
       boards.
          + Paul: monitoring will largely piggyback off calorimeter
            calibration system.


Start Counter

     * Sascha S.: Chuck thinks there is room to start bending early.

Retrieved from

   http://www.jlab.org/Hall-D/software/wiki/index.php/Time-of-Flight/Start-Counter_Meeting%2C_May_29%2C_2009

References

  15. http://hadron.physics.fsu.edu/~eugenio/gluex/tof/TOF-Light-Guide.pdf