Time-of-Flight/Start-Counter Meeting, August 7, 2009
Location, Time
Friday, August 7, 2009
3:00 pm EDT
JLab: CEBAF Center, Room F326/7
ESNet: 8542553
EVO: direct meeting link
Conference Group: 800-377-8846, participant code: 77438230
Slides: talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2009-08 on the JLab CUE (you have to be a member of the "halld" group). This directory is accessible from the web at https://halldweb1.jlab.org/talks/2009-08/ .
Agenda
- Minutes from the last meeting
- Time-of-Flight Status
- Start Counter Status
- Action Items
Minutes
simon, sascha, beni, mark, eugene Sasha and Chuck paul on way to jlab with local engineer, will talk to time chuck has done additional measurement on to hamamtsu pmt 2.1 sigma = 124 ps photonis was 142 ps hamamatsu run at 1700, 1750 the maximum photonis, 300 v below nominal plan to to back to photonis 2600 nominal voltage
plateau hamamatsu left does not plateau as easily as right done with trigger paddles in middle try at the ends switch the tubes trapezoidal shape light guide used in test final design fishtail will not fit
meeting with werner, after bcal review start bending early werner submitted new version of geometry chuck's drawings a starting point for him, need to decide what he should draw next mechanical discussion support concept understand regions in drawing match up with what is in the Monte Carlo get limitations from target werner planning measurements from prototypes this month sipm's for read-out dose estimate needed, perhaps something from collimator cave (sascha) sipm's avoid long light guides, 1.4 m Chris Keith
graduate student, working on gluex, nathan park, software work
working on clas as well
