[Solid_ec] Today's EC meeting minutes and to-do list

[Xiaochao Zheng]

Dear All:

Today's EC meeting minutes and to-do list have been added:

http://hallaweb.jlab.org/experiment/PVDIS/SoLID/EC/meetings/SoLID_EC_Weekly_minutes.html

The to-do list is copied below:

   1. Jin will continue PVDIS trigger simulation using the old Babar baffle design;
   2. Jin will provide more information on the PVDIS offline pion rejection. More specifically: A plot/matrix of pion rej factor vs. momentum and theta, like page 29 of last collaboration meeting's CC talk.  It will be even nicer if the same binning can be used.
   3. Upon receiving the above result from Jin, Xiaochao will put together the CC and the EC rejections and see if it meets the physics requirement of PVDIS that pion contamination should be <=1E-3;
   4. Someone will need to discuss with Bogdan on the status of the MAPMT electronics - Jin? Maybe Todd?
   5. Zhiwen will continue with the baffle design, but focusing on
         1. making the negative particle's acceptance correct and make sure the final electron statistics meet the PVDIS proposal goal (Fig. 2.6 on page 20 of the PVDIS 2009 proposal), or at least a comparison of the statistics to Seamus' last results. Care must be taken to use exactly the same Q2/x binning for these comparisons. Paul mentioned at most 10% reduction in statistics can be tolerated.
         2. If keeping high electron acceptance means some photons or pi+ will be accepted, we will have to deal with it through PID.
   6. Paul will look into the PVDIS requirement on the trigger PID. The max trigger rate was provided in the DAQ talk of March 22 meeting.

Thanks,

Xiaochao
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