Difference between revisions of "Jul 31, 2012 Calorimetry"
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#* [[Media:20120731_bcal_smearing.pdf|BCAL M.C. Update]] | #* [[Media:20120731_bcal_smearing.pdf|BCAL M.C. Update]] |
Revision as of 09:04, 1 August 2012
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)
Tentative Agenda
- Announcements
- Review of Action Items
- Monitoring
- LED system on Mini BCAL
- BCAL Monitoring
- FCAL
- Construction Status
- 2011 Hall B FCAL Beam Test (John)
- BCAL
- Activities at JLab (Module positioning, SiPM binning, LG Travellers)
- Cosmics at Regina
- Update on BCAL Beam Tests 2012
- USM update
- SiPM Update (Javiera)
- Light guides (Iñaki)
- 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.
- Calibration of Calorimeters
- Simulations/Reconstruction
- Any other business
Minutes
Attendees: Elton, David, Tim, Yi, Manuel, Dan, Beni, Eugene (JLab); Wil, Sergey, Javiera, Orlando, Hayk, Iñaki (USM); George (Athens); Andrei, Zisis (UofR).
- Announcements
- Review of Action Items
- Monitoring
- LED system on Mini BCAL
- BCAL Monitoring
- Photos of visible light shinning through the mini-Bcal.
- Clear intensity profiles seen in the light guide with pulsed LEDs, displaying a partial ring and a dot.
- The light guides adjacent to the ones with pulsed LEDs, showed the single bottom row of fibers was illuminated on the side where the LED was located.
- FCAL
- Construction Status - no report
- BCAL
- Activities at JLab (Module positioning, SiPM binning)
- Shaun Krueger and Tegan Beattie, students from UofR are completing a few projects. Shaun is working on the assignment of SiPMs to electronic boards. Tegan has worked out a scheme for laying out modules inside the magnet and taking mini-Bcal data with cosmic rays to check normalization.
- Cosmics at Regina
- Taking data at different overbias settings. Added amplifier to both ADC and TDC signals, to be able to study the timing behavior.
- Activities at JLab (Module positioning, SiPM binning)
- USM update
- SiPM Update (Javiera)
- Second shipment of SiPMs to JLab has been prepared and ready for pick up by Fedex
- Light guides (Iñaki)
- Calibration of milling machine to bring pieces into tolerance has taken some time
- All A-E guides are complete and within the 127 micron tolerance. The settings for guides F-K are being calibrated.
- Will pack a batch of A-E guides to ship to JLab.
- Elton: How much time does it take to machine and polish each piece? Answer: 20 min to machine, 12 min to measure and 20 min to polish.
- SiPM Update (Javiera)
- TDR update
- No update. Zisis will get back to the TDR in a couple of weeks.
- Simulations/Reconstruction
- BCAL M.C. Update
- Looking at fits to the energy resolution with the new MC code. He is obtaining large 1/E terms that are not understood and will be investigated further
- Eugene: Check the resolutions removing the clustering algorithm to make sure that is not affecting results
- David: The new MC needs a calibration scheme for proper use, especially to understand timing, as the output times now have slewing built in.
- Eugene: What dark rate is being used for the sensors? Answer: they are the measured dark rates at room temperature (these could be comparable to rates at 5 deg after some irradiation).
- Any other business