Difference between revisions of "Apr 5, 2011 Readout"
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# Announcements | # Announcements | ||
| + | #* DIS Conference next week at JLab; tour of Hall D next Wednesday | ||
# Review of Action Items | # Review of Action Items | ||
# USM update | # USM update | ||
| + | ## Received two of the "big" electronic boards (6 layers) for testing SiPMs. They are in the process of populating the boards | ||
| + | ## SiPM sample sent from Jlab is still in customs. | ||
| + | ##* Alam has fabricated a board with 16 fast amplifiers. Should be completed in a couple of days | ||
| + | ##* Eugene: What is the rise time of the amplifier? Serguei: 4-5 ns for a 3x3 mm sensor | ||
| + | ## Light guides | ||
| + | ##* Guides for Athens have been completed, but are still uncut and unpolished | ||
| + | ##* Guides for UofR next | ||
| + | ## Discussions with Hamamatsu continue, although no direct reply since last e-mail | ||
| + | ##* Considering signing a contract early to avoid penalties due to currency rate changes | ||
# SiPM update | # SiPM update | ||
| + | ## Yi: Carl has tested 60 samples to date | ||
| + | ##* Found one sample with anomalous cross talk (gain and PDE normal) | ||
| + | ##* Evaluating options for production testing: Could readout cells in groups of 4 to save electronics and check p.e. widths to evaluate uniformity. | ||
| + | ##* Serguei: Have we checked the cross talk between cells in the array? Yi: No, but we should do that. | ||
#* Regina Preliminary Tests of Hamamatsu prototype [[Media:ReginaLED-SiPMScan.pdf]] | #* Regina Preliminary Tests of Hamamatsu prototype [[Media:ReginaLED-SiPMScan.pdf]] | ||
# Electrical/cooling (Elton) | # Electrical/cooling (Elton) | ||
# Geometry and light guides | # Geometry and light guides | ||
# Simulations | # Simulations | ||
Revision as of 18:32, 5 April 2011
Teleconference Time: 11:00 a.m. EST
- ESNET 8542553 and EVO session
- 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
- Phone:
- +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)
Contents
Items for followup from previous meeting
-
Check if connections for cooling fluid can be bent radially outward to minimize affect on photons in the gap.Yes. Simulations of impact needed. - Need to get a firm number for the power dissipation in the monitoring control board (in case it is placed inside the housing box)
Documents to Review
Tentative Agenda
- Announcements
- Review of Action Items
- USM update
- SiPM update
- Regina Preliminary Tests of Hamamatsu prototype Media:ReginaLED-SiPMScan.pdf
- Electrical/cooling (Elton)
- Geometry and light guides
- Simulations
Minutes
Attending: Elton, David, Yi, John, Eugene (JLab); Will, Serguei (USM); Zisis, Andrei (UofR); Christina (Athens).
Tentative Agenda
- Announcements
- DIS Conference next week at JLab; tour of Hall D next Wednesday
- Review of Action Items
- USM update
- Received two of the "big" electronic boards (6 layers) for testing SiPMs. They are in the process of populating the boards
- SiPM sample sent from Jlab is still in customs.
- Alam has fabricated a board with 16 fast amplifiers. Should be completed in a couple of days
- Eugene: What is the rise time of the amplifier? Serguei: 4-5 ns for a 3x3 mm sensor
- Light guides
- Guides for Athens have been completed, but are still uncut and unpolished
- Guides for UofR next
- Discussions with Hamamatsu continue, although no direct reply since last e-mail
- Considering signing a contract early to avoid penalties due to currency rate changes
- SiPM update
- Yi: Carl has tested 60 samples to date
- Found one sample with anomalous cross talk (gain and PDE normal)
- Evaluating options for production testing: Could readout cells in groups of 4 to save electronics and check p.e. widths to evaluate uniformity.
- Serguei: Have we checked the cross talk between cells in the array? Yi: No, but we should do that.
- Regina Preliminary Tests of Hamamatsu prototype Media:ReginaLED-SiPMScan.pdf
- Yi: Carl has tested 60 samples to date
- Electrical/cooling (Elton)
- Geometry and light guides
- Simulations
