Feb 28, 2012 Calorimetry
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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+Canada
- +1-303-248-0285 : International
- then enter participant code: 3421244# (remember the "#").
- or www.readytalk.com (and code without the #)
Contents
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(s)
- Monitoring
- Send additional SiPMs to Athens for tests (Elton). Electronics is out for fabrication
Tentative Agenda
- Announcements
- Review of Action Items
- Monitoring. Media:FirstLEDassemblies.ppt
- FCAL
- Construction Status: mechanical, bases (notes from Matt)
- Paul and I both visited Total Electronics (the vendor for the CW bases) last Thursday. We went through a variety of issues regarding coating and assembly. They appear to understand where their procedure is deficient. Again, they are saying all the right things. The big question is: will the next batch of boards show improvements in production quality? We'll see.
- Beam tests in Hall B (John)
- small note on distance from CLAS scintillators by Kei
- Construction Status: mechanical, bases (notes from Matt)
- BCAL
- BCAL Beam Tests 2012
- LG gluing schedule and LED attachment by tape
- BCAL Beam Tests 2012
- USM update
- TDR update
- Instructions for the TDR (You must be logged into the wiki to access this page).
- We need to start revising Chapter 4 Detector, Section 4.3 Calorimetry.
- Simulations/Reconstruction
- Any other business
Minutes
Attending: Elton, Eugene, John D., Beni, Yi, David, Sasah, Tim, John L. (JLab); Christina, George, Pavols (Athens); Zisis, George (UofR); Will, Hayk, Javiera, Sergei, Orlando (USM);
- Announcements
- Review of Action Items
- Monitoring. Media:FirstLEDassemblies.ppt
- FCAL
- Construction Status: mechanical, bases (notes from Matt)
- Paul and I both visited Total Electronics (the vendor for the CW bases) last Thursday. We went through a variety of issues regarding coating and assembly. They appear to understand where their procedure is deficient. Again, they are saying all the right things. The big question is: will the next batch of boards show improvements in production quality? We'll see.
- Beam tests in Hall B (John)
- small note on distance from CLAS scintillators by Kei
- John reported that they are sorting out the combined Hall B/Fcal data taken. The data with the Fcal trigger looks good. The data with the T-counter triggers have very few hits. Will likely request additional data be taken once all the issues with the present data set are understood.
- Construction Status: mechanical, bases (notes from Matt)
- BCAL
- BCAL Beam Tests 2012
- LG gluing schedule and LED attachment by tape
- Sasha has added the list of electronics to the wiki
- BCAL Beam Tests 2012
- USM update
- Production Manager Report (Javiera)
- Javiera compared data for the width the rise time of pulses taken with the array inserted upside-down. The systematics shown last week follow the electronic channel indicating that it is probably due to the amplifiers (not the sensor).
- Also showed scope traces for the summed array output illuminating the entire array and illuminating a single cell. The widths were only slightly less for the single cell.
- Station 3: Crosstalk vs. temperature (Hayk)
- Only 5 positions in stage with with remaining problems.
- Showed data showing fits that indicate that the x-talk depends on temperature, however there are several reasons that the data sets are not directly comparable.
- Yi: Conducted several fitting tests. Finds that a fit to the entire spectrum is independent of temperature, but fits to 3 peaks (method used by USM) at a time show some systematics.
- Problem solved: Orlando
- Production Manager Report (Javiera)
- TDR update
- Instructions for the TDR (You must be logged into the wiki to access this page).
- We need to start revising Chapter 4 Detector, Section 4.3 Calorimetry.
- Simulations/Reconstruction
- Any other business