Sep 18, 2012 Readout

Teleconference Time: 11:00 a.m. EST

• ESNET (Number is 8542553) and EVO session (GlueX Calorimetry meeting room)
• Phone connection only upon request.
  • +1-866-740-1260 : US and Canada
  • +1-303-248-0285 : International
  • then use participant code: 3421244# (the # is needed when using the phone)
  • OR from www.readytalk.com type access code 3421244 into "join a meeting" without the # (you need java plugin)

Participant Direct Lines

• JLab Phone: in CC F326 is 757-269-6337 (usual room)
• JLab Phone in CC L207 is 757-269-7084
• Phone in the Regina Videoconference Suite is 306-585-4204
• Athens Phone: in Christina's office is 011-30-210-727-6947

Items for followup from previous meeting

1. SiPMs (USM)
   • Provide histograms of all measured units for each specification at T=20 deg C and V=1.2 V above breakdown.
   • Send dump of data base. Provide the dump on a disk with the next shipment of SiPMs
2. LIght guides
   • Check the light guides with the JLab template before shipping to verify compliance. Check with JLab if the units do not pass.

Tentative Agenda

1. Announcements
2. Review of Action Items
3. Talks at the Collaboration Meeting (Draft from last week)
   • Fcal (Matt)
   • UofR work (Zisis)
   • Monitoring (Christina if available)
   • USM one or two talks? -MPPC / light guides- (Hayk?)
4. Update from Athens
   • Gluex-doc-2052 First bunch of 1000 BCAL LED miniboards
5. Simulations
   • BCAL Simulation (David L.)
6. Update from USM
   • Third shipment of MPPCs has been made, temporarily stuck in U.S. customs
   • Lightguide production is proceeding as planned. Measurement machine has been installed by technician from manufacturer, and training completed.
     • Link 1
     • Link 2
7. Status of testing at JLab
   • GlueX-doc-2053 Tests of pre-production readout assembly on mini-Bcal
   • GlueX-doc-2051 Cross talk and after pulsing (Ivan)
8. Beam Tests, Cosmics
9. Other

Minutes

Attending: Elton, David, Ivan, Yi, Beni, Eugene (JLab); Shaun, Zisis, Andrei (UofR); Stratos, Pavlos (Athens); Will (USM)

1. Announcements
2. Review of Action Items
3. Talks at the Collaboration Meeting (Draft from last week)
   • Fcal (Matt)
   • UofR work (Zisis)
   • Monitoring (Christina if available)
   • USM update on SiPM and light guides- (Hayk will prepare)
4. Update from Athens
   • Gluex-doc-2052 First bunch of 1000 BCAL LED miniboards
   • First 20 strings (200 LEDs) were shipped and received by JLab
   • Data statistics on the first 1000 LEDs were shown including stability
   • First 500 boards have been grouped according to intensity
   • Elton: Please send the data electronically. [Note: Stratos has already shipped the files].
   • Zisis: When will a schedule be shown for remaining deliveries? Christina should do this next week.
5. Simulations
   • BCAL Simulation (David L.)
   • Goal is to add realism into the simulations in response to showers.
   • Ready to make the updated code the default simulation
   • Questions still remaining: effect of reconstruction and dark hits on resolution
   • Elton: When will Andrei be able to provide more realistic input for the shower simulation? Andrei: Having some problems with fitting and extraction of parameters. Will provide an status update at the next meeting. Also work continues on spectra obtained with the fine-grained calorimeter.
6. Update from USM
   • Third shipment of MPPCs has been made, temporarily stuck in U.S. customs. [Update at the time of writing: Two boxes arrived yesterday]
   • Lightguide production is proceeding as planned. Measurement machine has been installed by technician from manufacturer, and training completed.
     • Link 1
     • Link 2
7. Status of testing at JLab
   1. GlueX-doc-2053 Tests of pre-production readout assembly on mini-Bcal
      • Measurements of new pre-production boards on the mini-BCAL show that they will be acceptable to the experiment.
      • Write-up of studies is underway and will be made available later this week for feedback.
   2. GlueX-doc-2051 Cross talk and after pulsing (Ivan)
      • Measurements have been taken to separate cross talk and after-pulsing contributions by taking data with different gate widths and at various operating voltages.
8. Beam Tests, Cosmics
9. Other