[Halld-pid] Start Counter Meeting Minutes, September 20, 2012

[Mark M. Ito]

Folks,

Find the minutes below and at

https://halldweb1.jlab.org/wiki/index.php/GlueX_Start_Counter_Meeting,_September_20,_2012

   -- Mark
_____

GlueX Start Counter Meeting, September 20, 2012
Minutes

    Present:
      * FIU: Werner Boeglin, Puneet Khetarpal, Eric Pooser
      * JLab: Eugene Chudakov, Chuck Hutton, Mark Ito (chair)

Mechanical Design and Construction

    The material ordered from Eljen is at McNeal. The order for 3 paddles
    has been placed with them. The dimensions should be as in final design.
    If acceptable, these modules can be used in the detector.

    FIU is currently setting up for connecting SiPM readout to a real
    scintillator paddle. Tests done before were with a pulsed led directly
    on the SiPM.

    Eric presented the current ideas on the mechanical assembly of the
    final detector. The idea is to use pneumatic pistons which exert
    pressure, digitally-controlled, to hold the scintillator bars in place
    around the inner foam support before the outer wrapping is done. The
    arrangement can be rotated around the beam axis. See [17]his slides for
    details.

    Werner is thinking about writing a NIM article about the FIU
    measurements and simulation. There is not much in the literature on the
    issues with long thin scintillators.

    Eric asked Chuck to send a CAD model of the inner foam support.

Contract

    Werner has started work on a schedule. He still has some questions for
    McNeal and issues to discuss with Lei Guo. He will send out a draft
    soon.

    Retrieved from
"https://halldweb1.jlab.org/wiki/index.php/GlueX_Start_Counter_Meeting,_September_20,_2012"

References

   17. 
https://halldweb1.jlab.org/talks/2012-3Q/Start_Counter_Construction_Prelim.pdf

-- 
Mark M. Ito
Jefferson Lab (www.jlab.org)
(757)269-5295