GlueX Start Counter Meeting, May 31, 2012

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GlueX Start Counter Meeting
Thursday, May 31, 2012
10 am EDT
JLab: CEBAF Center F326/327

Agenda

  1. Announcements
  2. Review minutes from previous meeting
  3. Mechanical Design
  4. Read-out design
  5. Simulation
  6. Contract

Communication Information

Video Conferencing

Slides

Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2012-2Q on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2012-2Q/ .

Minutes

Present:

  • FIU: Werner Boeglin
  • JLab: Chuck Hutton, Mark Ito (chair), Tim Whitlatch, Beni Zihlmann

prototype, measured new scint from mcneal got time resolution about 400 ps 200 ps upstream, downstream 400 ps average 350 ps seems that working edges really well scratches in perfect surface not a big deal no wrapping good job on edges from company confirm with simulation simulation workshop will help if you make a volume give different surfaces different properties geant4 simulation

want to look at new sipm's

mechanical 1 outside 2 show start counter 3 zoom in cables 4 zoom in again gap between pcb and foam, put in a o ring to block the light, or tape plastic inserts between boards for light tightening 5 zoom in more cutaway clearance between target holder and start counter support , aluminum or stainless stainless on stainless sticks together, screw consideration standoff betwewween board and holder inner foam will have a lip holder single piece, bolts to targe support tube, stainless 6 fernando's electronics, back connector changed 7 electronics 8 cutway, target and start counter 9 side view cutaway 10 close-up, side cutway, at upstream end 11 foam alone 12 close up of foam alone

build central part, then mount counters on the outside

nose to save material outer foam now not there now to save material wrapping has not been decided, shrink wrap reflective material , one sheet, aluminized on both sides

target guys moved, made holder a bit thinner

viable mechanical set-up

fiu has a machine shop assemble scint, test them at fiu build central mandrill at jlab electronics at jlab

werner at jlab tue and wed review contract stuff

mcneal, feedback to them, make a couple of few more board with three scint prototype, with fake mandrill



to do

ask about meeting collab wed talk to youri about no outer foam