Mike, JP, Zhiwen, Paul Souder,Rakitah 

Mike 
-Maurizio
-trigger on 9 sum : more efficient on sum
-need to test with real PMT : coming soon
-plot on wiki : 
-check low energy background using Zhiwen baffles and geometry : they agree
-Low EM background : turned on  
-Simulation takes a day on farm
-Need to migrate code
-Singles rates ? and rejection

Zhiwen
-understand more
-still no way to improve
-gave file to Seamus, results seems ok but background is not as good as Seamus design
-file for latest baffle design available on the wiki
https://hallaweb.jlab.org/wiki/index.php/Baffle_Design
http://hallaweb.jlab.org/12GeV/SoLID/download/baffle/

-will update SVN to include the latest baffle design

-Heavy Gas Cerenkov needs to move 10 cm further back, Zhiwen looked in details, modules, fibers and connectors. 30 cm at the back.
Still need to make sure it fits. Different options to be evaluated, yoke change, calorimeter length change.


-check with collaborators for talk 


Alexandre

SIDIS simulation : need to evaluate pion trigger efficiency from simulation
Effect of background on SIDIS
Mostly focus on singles trigger with one sample readout and put coincidence and 3 samples as fall back.


GEM occupancy studies needs to be redone with new baffles for PVDIS to 

Conversion number need to check with Seamus if this number was used.
Full monte carlo in GEM.

Magnet document request sent


Fifth chamber cost seems ok


Still plan do review for October need final document by Mid August.


Make page for summarizing rates on Wiki