GlueX Start Counter Meeting, July 26, 2012

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GlueX Start Counter Meeting
Thursday, July 26, 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:
    1. Start Counter Background Studies
    2. Start Counter Simulations
  6. Contract

Communication Information

Video Conferencing

Slides

Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2012-3Q on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2012-3Q/ .

Minutes

start counter meeting notes

Describe your new note here.

chuck, beni, eugene, sasha, mark werner, puneet


• scintillator has not been ordered • contacted eljen, asked about diamond milled edges • place order next week

• wrapping the scintillator for cross talk • eljen have double aluminized mylar, two microns thick, used for entry windows for alpha detectors to make them light tight ∘ could wrap entire counter ∘ they have reject material that we could get for cheap, 1000 A of Al on each side

• chuck will send drawings

• thickness of mylar thinner than tolerance of detector

• got the boards on Monday ∘ one board with row of SiPM's, 50 and 100 micron

• check digitation details • figure out what thresholds are being applied for the rates • fixed sized sensors • hdgeant, threshold remove hits below .150 MeV • 150 cm attentuation length

• sensor 3 x 12 mm • air gap at the end .1 mm

implement edges on to the bent geometry