Revision as of 13:05, 3 May 2012

GlueX Start Counter Meeting
Thursday, May 3, 2012
10 am EDT
JLab: CEBAF Center, Room 326/327

Agenda

1. Announcements
2. Review minutes from previous meeting
3. Prototype Report
4. Readout Design
5. Contract Status
6. Simulation

Communication Information

Video Conferencing

• ESNet: 8542553
• EVO:
  • Meeting URL: http://evo.caltech.edu/evoNext/koala.jnlp?meeting=eneueMvsv2aBaDInalIn
  • Phone Bridge ID: 13 2615

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, Puneet Khetarpal
• JLab: Mark Ito (chair), Elton Smith, Tim Whitlatch, Beni Zihlmann

Prototype

The sample counter has still not come in from McNeal. It has been built and now is "in finishing."

Read-Out

Mark reported on his conversation with Fernando. Fernando has started thinking about the design of the SiPM board • 3 sectors ok • 3 bias voltages • outrigger board • thermister, not used ∘ elton and werner prefer it ∘ does set point temp need to be known in advance?

new geometry for stat counters ready • remove long light guides • puneet will do it • may have to add some material for sipm boards

LED system • usefull to vary intesnsity, check efficiency, if fsast, can look at timing resolution

Mechanical

• inner support to be machined out of one piece • no foam on the outside • light-tighting an issue