Difference between revisions of "Aug 23, 2011 Readout"
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− | ''Attending: | + | ''Attending: Elton, Will, Beni, Eugene (JLab); Christine (UA); Sergey (CERN); Hayk, Alam, Ricardo (USM); Andrei (UofR). |
+ | |||
+ | # Announcements | ||
+ | # Review of Action Items | ||
+ | # Monitoring Update (Athens) | ||
+ | ## George Voulgaris reported on studies on new OSRAM LEDs before he left on vacation | ||
+ | ##* They measured various among the samples studied, and suggest to go back to the Kingbright LEDs for the monitoring system. | ||
+ | ##* The Kingbright LEDs havea 3.2x1.6 mm2 footprint and the light is emitted vertical to the plane. Therefore, they might require (hand) soldering at an angle. | ||
+ | ## Christine, Elton and Zisis will have phone conference on Thu at 9:30 to go over questions about the contract | ||
+ | # USM Update | ||
+ | ## MPPC dark box test station: database and interface (Ricardo Oyarzun and Hayk Hakobyan) [http://www.jlab.org/Hall-D/software/wiki/images/6/6a/Presentation.pdf Link here] | ||
+ | ##* QA, testing, user interface to MySql data base to hold SiPM data from the three SiPM test stations. | ||
+ | ##* Elton: What information is kept in the data base? They will be parameters of interest and give specific list at the next meeting. | ||
+ | ##* Web server is currently run on a local machine, but can be made available on the web at a later time | ||
+ | ## MPPC dark box test station: hardware update (Alam Toro and Sergey Kuleshov) [http://www.jlab.org/Hall-D/software/wiki/images/8/88/20110823-USMUpdate.pdf Link here] | ||
+ | ##* 10 big boards and 70 daughter boards have been received. They have not yet been stuffed with components, which will take several more weeks. | ||
+ | ##* New boards have added daughter boards for modularity and to reduce complexity, as the mux are moved to the daughters. | ||
+ | ##* Testing is proceeding using the old boards. | ||
+ | ##* Checked pedestal widths for different grounding configurations. The width does seem to change, although additional grounding straps seem to degrade the peaks. | ||
+ | ##* Beni: suggested to float the power supply and only use the signal ground connection. | ||
+ | ##* Beni: Suggested to drill holes at the corners of the boards and use with stand-offs | ||
+ | # SiPM update | ||
+ | ## First Hamamatsu delivery expected for beginning of Sep. | ||
+ | # Electrical/cooling (Elton) | ||
+ | ## Major design decision is whether to proceed with an additional inner layer (e.g. the 1-2-3-4 configuration). Fernando is investigating the options of laying this out on his preamp/sum board. | ||
+ | ## Mechanical pieces that do not depend on this decision will go out for fabrication. | ||
+ | # Geometry and light guides | ||
+ | ## JLab RFP was issued last week. Expect responses in a few weeks | ||
+ | ## The light guide production at USM had started and they had 30 guides machined, but unpolished | ||
+ | ##* Athens would like about 20 guides to assemble into two columns. These light guides are of the old design. | ||
+ | ##* Alam will check the status of polishing and see if they can be provided to Athens for testing monitoring system with more realistic configurations. | ||
+ | # Simulations |
Latest revision as of 16:37, 23 August 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
Documents to Review
Tentative Agenda
- Announcements
- Review of Action Items
- Monitoring Update (Athens)
- USM Update
- SiPM update
- Electrical/cooling (Elton)
- Geometry and light guides
- Simulations
Minutes
Attending: Elton, Will, Beni, Eugene (JLab); Christine (UA); Sergey (CERN); Hayk, Alam, Ricardo (USM); Andrei (UofR).
- Announcements
- Review of Action Items
- Monitoring Update (Athens)
- George Voulgaris reported on studies on new OSRAM LEDs before he left on vacation
- They measured various among the samples studied, and suggest to go back to the Kingbright LEDs for the monitoring system.
- The Kingbright LEDs havea 3.2x1.6 mm2 footprint and the light is emitted vertical to the plane. Therefore, they might require (hand) soldering at an angle.
- Christine, Elton and Zisis will have phone conference on Thu at 9:30 to go over questions about the contract
- George Voulgaris reported on studies on new OSRAM LEDs before he left on vacation
- USM Update
- MPPC dark box test station: database and interface (Ricardo Oyarzun and Hayk Hakobyan) Link here
- QA, testing, user interface to MySql data base to hold SiPM data from the three SiPM test stations.
- Elton: What information is kept in the data base? They will be parameters of interest and give specific list at the next meeting.
- Web server is currently run on a local machine, but can be made available on the web at a later time
- MPPC dark box test station: hardware update (Alam Toro and Sergey Kuleshov) Link here
- 10 big boards and 70 daughter boards have been received. They have not yet been stuffed with components, which will take several more weeks.
- New boards have added daughter boards for modularity and to reduce complexity, as the mux are moved to the daughters.
- Testing is proceeding using the old boards.
- Checked pedestal widths for different grounding configurations. The width does seem to change, although additional grounding straps seem to degrade the peaks.
- Beni: suggested to float the power supply and only use the signal ground connection.
- Beni: Suggested to drill holes at the corners of the boards and use with stand-offs
- MPPC dark box test station: database and interface (Ricardo Oyarzun and Hayk Hakobyan) Link here
- SiPM update
- First Hamamatsu delivery expected for beginning of Sep.
- Electrical/cooling (Elton)
- Major design decision is whether to proceed with an additional inner layer (e.g. the 1-2-3-4 configuration). Fernando is investigating the options of laying this out on his preamp/sum board.
- Mechanical pieces that do not depend on this decision will go out for fabrication.
- Geometry and light guides
- JLab RFP was issued last week. Expect responses in a few weeks
- The light guide production at USM had started and they had 30 guides machined, but unpolished
- Athens would like about 20 guides to assemble into two columns. These light guides are of the old design.
- Alam will check the status of polishing and see if they can be provided to Athens for testing monitoring system with more realistic configurations.
- Simulations