Difference between revisions of "Dec 18, 2012 Calorimetry"
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# Review of Action Items | # Review of Action Items | ||
# FCAL | # FCAL | ||
− | #* [https:// | + | #* [https://halldweb.jlab.org/wiki/index.php/File:FCAL_Frame.JPG Frame Installed] |
− | #* [https:// | + | #* [https://halldweb.jlab.org/wiki/images/d/d5/2012-12-18FCALbeamtest_KeiMoriya.pdf Beamtest presentation] |
− | #* [ | + | #* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=2118 Results on Energy and Timing Resolution of FCAL in 2011--2012 Beamtest analysis note] |
# BCAL | # BCAL | ||
# USM | # USM | ||
Line 43: | Line 43: | ||
# Announcements | # Announcements | ||
# Review of Action Items | # Review of Action Items | ||
+ | # Monitoring | ||
+ | ## Bcal boards are proceeding as scheduled. Controller boards are being stuffed. | ||
+ | ## Fcal measurements with first-article has raised two issues | ||
+ | ##* Light uniformity on edges of plexiglass is improved by polishing edges. | ||
+ | ##* The 2 red LEDs seem to output sufficient light, but the 2 green LEDs do not produce sufficient light under nominal configuration. | ||
+ | ##* Amount of light collected from green LEDs with plexiglass is 1/2-1/3 of that with plexiglass | ||
+ | ##* Sanding the top and bottom increases collection of light by a factor of about 6. Still, Christina does not think this is sufficient. | ||
+ | ##* Elton: IU should propose the dynamic range of signals required for the LED monitoring system | ||
+ | ##* Christina: One may also try to find alternative LEDs that better match the dynamic range necessary | ||
# FCAL | # FCAL | ||
− | #* [https:// | + | #* [https://halldweb.jlab.org/wiki/index.php/File:FCAL_Frame.JPG Frame Installed] |
− | #* [https:// | + | #** Initialt survey and alignment of frame is ongoing now |
− | #* [ | + | #** Techs still need to do more work to ready the frame. John Frye will come down after Jan 14 for fine alignment and help start stacking blocks. |
+ | #** Stacking will start toward the end of January. | ||
+ | #* [https://halldweb.jlab.org/wiki/images/d/d5/2012-12-18FCALbeamtest_KeiMoriya.pdf Beamtest presentation] | ||
+ | #** DE: fit terms in quadrature in the parameterization. | ||
+ | #** DE: consider fitting data sets with consistent HV configurations separately | ||
+ | #** DT: evaluate Gaussian extraction of time to compare with previous studies | ||
+ | #* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=2118 Results on Energy and Timing Resolution of FCAL in 2011--2012 Beamtest analysis note] | ||
# BCAL | # BCAL | ||
# USM | # USM | ||
+ | #* Some discussion regarding consistent summary of data for all parameters at Vover =1.0, 1.1 V (to supplement data on 1.2V) | ||
+ | #* Shipment of 360 sensors is still in Customs in Santiago, waiting for final disposition. | ||
# Simulations | # Simulations | ||
# TDR update | # TDR update | ||
# Calibration of Calorimeters | # Calibration of Calorimeters | ||
# Any other business | # Any other business |
Latest revision as of 17:10, 24 February 2017
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 757-269-6460 (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)
- Produce plots of SiPM parameters, such as the ones already shown, for Vover=1.0, 1.1 V (Orlando)
- After summary of SiPM parameters, provide data to Hamamatsu for comments (USM)
-
For the suspect SiPMs, calculate the integrated dark rate for the array to compare them (Orlando)Discussed at Bcal Readout meeting.
Tentative Agenda
- Announcements
- Review of Action Items
- FCAL
- BCAL
- USM
- Simulations
- TDR update
- Calibration of Calorimeters
- Any other business
Minutes
Attendees: Elton, David, John, Yi, Beni (JLab); Hayk, Will, Alam, Orlando (USM); Shawn, Zisis, Andrei (UofR); Matt, Kei, Dan (IU); Christina, George, Pavlos (Athens)
- Announcements
- Review of Action Items
- Monitoring
- Bcal boards are proceeding as scheduled. Controller boards are being stuffed.
- Fcal measurements with first-article has raised two issues
- Light uniformity on edges of plexiglass is improved by polishing edges.
- The 2 red LEDs seem to output sufficient light, but the 2 green LEDs do not produce sufficient light under nominal configuration.
- Amount of light collected from green LEDs with plexiglass is 1/2-1/3 of that with plexiglass
- Sanding the top and bottom increases collection of light by a factor of about 6. Still, Christina does not think this is sufficient.
- Elton: IU should propose the dynamic range of signals required for the LED monitoring system
- Christina: One may also try to find alternative LEDs that better match the dynamic range necessary
- FCAL
- Frame Installed
- Initialt survey and alignment of frame is ongoing now
- Techs still need to do more work to ready the frame. John Frye will come down after Jan 14 for fine alignment and help start stacking blocks.
- Stacking will start toward the end of January.
- Beamtest presentation
- DE: fit terms in quadrature in the parameterization.
- DE: consider fitting data sets with consistent HV configurations separately
- DT: evaluate Gaussian extraction of time to compare with previous studies
- Results on Energy and Timing Resolution of FCAL in 2011--2012 Beamtest analysis note
- Frame Installed
- BCAL
- USM
- Some discussion regarding consistent summary of data for all parameters at Vover =1.0, 1.1 V (to supplement data on 1.2V)
- Shipment of 360 sensors is still in Customs in Santiago, waiting for final disposition.
- Simulations
- TDR update
- Calibration of Calorimeters
- Any other business