GlueX Start Counter Meeting, December 13, 2012

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GlueX Start Counter Meeting
Thursday, December 13, 2012
10 am EDT
JLab: CEBAF Center F326/327

Agenda

  1. Announcements
  2. Review minutes from previous meeting
  3. Counter Construction
  4. SiPM read-out status
  5. Light collection study status
  6. Contract

Communication Information

Video Conferencing

Telephone and Desktop Sharing

To connect via telephone:

To view the shared desktop:

Slides

Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2012-4Q on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2012-4Q/ .

Minutes

Present:

  • FIU:
  • JLab:

start counter meeting notes 12/13/12

st-2 will be coming back to fiu

we have discriminators to send to FIU

coda stuff everyting setup trigger supervisor up and running pulser generator, triggers get read-out list for adc's and tdc sent model number to david abbott /site/coda/3.0

yesterday, conversation with chuck hurlburt chief engieer at eljen reviewed geometry discussed types of heating methods consitderin long and thin try localized infra-red heading, al foil to cover non heated areasd support on a form polished aluminiumn try for minimum heat to bend, 90 degres farenheit they think it would be easy, they bend and then ship to Mcneal previous batch, mcneal removed tape to heat when machining protection not present in bend region elgen wil re-apply potective tape mcneal 177$ each for batch of 5 with diamond edge milling if elgen bends, no need for diamond edge eugene: can we leafe the tape on the gap needed is a wavelength

found a clas new start counter paper interesting things contact with Youri, on how he assembled internal support structure

tests with wrapping materials plan for 2 micron aluminum coated mylar will try aluminum foil in past perhaps bad results from wrappitnn too lightlyl with mylar

chuck eugene beni puneet mark eric

each paddle light tight, wrap each paddle black tedlar, at jlab, beni will give some to puneet

finished classes

looking at finalized geometry changed, width increased chuck will review discussed with c & werner

foam cone assembly: would like not stp but, vxf or dwg

SiPM, amplitude from the counter, amplification of read-out depends on this we will need amplitude for time-walk correcrtion

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