Oct 22, 2013 Calorimetry
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Teleconference Time: 11:00 a.m. EST
- ESNET (Number is 8542553) and SeeVogh 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 757-269-6460 (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)
- Revisit raw data format for Flash-250 MHz following Flash-125 MHz discussion. (all)
-
Upload documentation for interlocks and monitoring to Doc Db (Dan)See GlueX-doc-2342 -
Check that latest edits of TDR have been checked into svn (Zisis)Zisis has uploaded the latest updates to svn
Tentative Agenda
- Announcements
- Action Items
- Monitoring
- FCAL
- BCAL
- Update on liquid sample on Readout Assembly used for testing (001)
- See Sep 24, 2013 Calorimetry for background information.
- File:Readout001 Analytics.pdf Report indicates propylene glycol is the main component in the liquid, which is the additive in the anti-freeze coolant we were using. The liquid was found on the #1 modules used for testing of modules after gluing light guides.
- Cosmics: Media:TDCcalculations.pdf
- Reconstruction and Simulation
- TDR update
- Calibration of Calorimeters
- Any other business
Minutes
Attendees: Elton, David, Alam, Beni, John, Dan, Yi (JLab); Sean (NW); Matt (IU); Zisis, Shaun? (UofR had trouble with Seevogh connections, participated by audio)
- Announcements
- Action Items
- Monitoring
- Documentation for the controls for Fcal on DocdB.
- Switches are being currently installed .
- Electrical work is ongoing with clean power expected within a week
- As soon as connected, will check interaction of control circuits with PLC
- FCAL
- Plexiglass monitoring panels arrived
- Two of the four panels were not machined correctly. Replacement panels were shipped from Eljen and arrived last Friday.
- John and Dan checked dimensions and sanded circular area to match the Athens test piece
- They have been transported down to the hall. The non-conforming panels will be shipped back to Eljen.
- The LED boards will be secured to the panels once the panels are in place. They will be equally spaced except to avoid the support brackets.
- The plan is to attach the boards to the panels using UV curing glue.
- FCAL Calibration
- Nice summary of the expected calibration procedure by Matt
- Sean had several questions and comments
- Sean: Should we use the gain as an indicator of dead channels? Elton: Should have an additional quality factor for each channel
- Sean: How is the type (color) of LED recorded in the data? We need to make sure this gets into the data stream.
- Sean: Considerations for alignment and geometrical locations? John: Sparse survey of about 15 pts determining z of the blocks (no x-y information), put blocks within 500 microns of the beamline, indicating that the detector face has little tilt if any.
- Sean: Effort to implement calibration framework? Matt: It will take some time to integrate Claire Tarbert's work the current framework.
- David: How do you check for swapped cables? John/Matt: LEDs can be lit up according to specific geometric patters and check the ribbon cable connections.\
- Dan: How are the hardware adjustments related to these constants? The hardware should be kept rather constant over large periods after initial settings and variations compensated using software constants.
- Plexiglass monitoring panels arrived
- BCAL
- Update on liquid sample on Readout Assembly used for testing (001)
- See Sep 24, 2013 Calorimetry for background information.
- File:Readout001 Analytics.pdf Report indicates propylene glycol is the main component in the liquid, which is the additive in the anti-freeze coolant we were using. The liquid was found on the #1 modules used for testing of modules after gluing light guides.
- Cosmics: Media:TDCcalculations.pdf Note: Due to connection difficulties, this work will be presented next time.
- Reconstruction and Simulation
- TDR update
- Calibration of Calorimeters
- Any other business