[Lowq] Minutes of the eg6 meeting on May 18

[Hovanes Egiyan]

  Minutes of the May 18 meeting


       From Lowqwiki

Present: Stepan, Carlos, Howard, Hovanes

On the Phone: Raphael, Eric, Dave.


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    Cooking update

    * Lamiaa used Stepan's numbers to set the timing for some of the
      shifted TOF paddles. The /p2p_delay_el/ needs to be fixed.
    * Lamiaa cooked some "strategically chosen" runs to check the
      calibration quality, mainly then RF-offsets.

        Most runs at 5.7 and 6 GeV have RF-offset within 100 ns. 
        But 1 GeV run have large offsets, and a different RF offsets
        will be applied to those run ranges before we start Pass 0 cooking. 

    * One run has an unusually large width for RF-offset plot.
    * Some of the C_SQL numbers are wrong. They also need to be checked.
    * Hovanes will ask Raffaella to update the monitoring page on the
      secure web site with the numbers from these jobs.
    * Lamiaa is checking the solenoid magnet currents in CALDB so that
      we do not use fixed values for the torus and solenoid in the TCL
      file.

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    ?^0 s in IC

    * Dave looked for ?^0 s in IC by reconstructing two photons
      <http://jlab.org/%7Ejenkins/eg6/17may10/eg6Analysis17may10.html>.
    * There seem to be a problem with *MVRT* bank which he was using to
      constrain the pion decay vertex. He will try to use the electrons
      in *EVNT* to find the vertex. It was pointed out that F.-X. is
      working on implementing this feature in the reconstruction code
      itself.

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    Other

    * Eric asked Stepan and Hovanes to check for the "Tiefenback energy".
    * The claseg6 cooking account was suspended last week because the
      password was not changed.

        Neither Hovanes nor Lamiaa received an e-mail about this before
        suspension. 
        The account was reactivated Tuesday morning. 

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