Feb 14, 2012 Calorimetry
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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)
- Monitoring
- Send additional SiPMs to Athens for tests (Elton). Electronics is out for fabrication
- TDR
-
Create outline to assign writing homework (Elton)
-
Draft outline
Existing (old) outline
- Global Design
- Forward Calorimeter
- The E852 Experience
- The RadPhi Experience
- Estimating the GlueX pi0 and eta Mass Resolution
- Electromagnetic Backgrounds
- Radiation Damage
- Heat Curing of Damaged Blocks
- Assessing Lead Glass Blocks and PMT's
- Lead glass block evaluation
- PMT Evaluation
- Other Issues
- Electromagnetic Rates in the LGD
- Magnetic Shielding
- Monitoring
- Calibration
- Triggering
- Barrel Calorimeter
- Design Considerations
- Pb/Sci Barrel Calorimeter
- The GlueX BCAL
- Construction of Prototype Modules
- Production of Lead Sheets
- Module Construction
- Scintillating Fiber Tests
- Fiber Light Transmission Tests
- Silicon Photomultiplier Test
- Upstream Photon Veto
Proposed outline for revised section
- Global Design
- Forward Calorimeter
- Geometry
- Lead Glass Modules
- Lead glass
- Photomultiplier tubes
- Light guide design
- Module assembly
- Support structure
- Stacking
- Calibration
- Monitoring
- Triggering
- Expected Performance
- The E852 Experience
- The RadPhi Experience
- Background, lifetime and rates
- Energy and time resolution
- Mass resolution (+ other physics quantities)
- Barrel Calorimeter
- Geometry
- BCAL Module construction
- Scintillating fibers
- Lead
- Fabrication
- Readout
- SiPMs
- Operation (e.g. temp compensation etc)
- Calibration
- Monitoring
- Expected Performance
- Prototypes and tests
- Background, lifetime and rates
- Energy and time resolution
- Mass resolution (+ other physics quantities)
Tentative Agenda
- Announcements
- Review of Action Items
- Collaboration Meeting
- Friday at 2:30pm, 4 30 minute talks.
- Monitoring.
- FCAL
- Construction Status: mechanical, bases (notes from Matt)
- Beam tests in Hall B (John)
- BCAL
- USM update
- 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. See above for old and new proposed outlines.
- Simulations/Reconstruction
- Any other business
Minutes
Attending: Tim, John, Elton, David, Yi, Beni (JLab); George, Pavols, Christine (Athens); Zisis, George (UofR); Hayk, Will, Orlando, Javiera (USM).
- Announcements
- Review of Action Items
- Collaboration Meeting
- Friday at 2:30pm, 4 30 minute talks.
- Monitoring.
- PC boards shipped to Geneva, before transferring to Athens. Should be populated in a couple of weeks.
- George is preparing a test setup
- The invoice from Athens has been signed, but the CERN account has changed and this has been corrected. We hope it will not have an impact on payment schedule.
- FCAL
- Updates will be presented at the collaboration meeting
- BCAL
- BCAL Beam Tests 2012
- Elton presented the beam test request to Hall B yesterday.
- We have been instructed to work with Eugene Pasyuk and Doug Tilles to install equipment.
- Elton, John, Tom and Josh went down to the hall this morning to plan where to locate the mini-Bcal ectype and how to place it there.
- The beam test will be presented at the collaboration meeting.
- BCAL Beam Tests 2012
- USM update
- Run manager report (Javiera)
- Second shipment of SiPMs boxes has arrived.
- The pulse shapes of 210 MPPCs have been tested in the stage 2 setup. Plan to test all units
- The PDE of 40 MPPCs has been measured. This completes the 10% fraction to be tested for the first shipment.
- Light guides
- There were some delays in shipping. Expect to ship the first article today.
- Update on Station 3 (Hayk)
- Fixing last problems in stage 3.
- Using Si pads to ensure good thermal contact between SiPMs and cooling plate
- Presented data before and after fixes. The new protocol uses less incident light to enhance the pedestal peak and takes more data to ensure adequate statistics at each point.
- About 28 (of 32) channels are operational. Most problems are identified and the goal is to have them operational, but production can commence with a few missing channels.
- Some condensation was discovered in the test setup. The AC system settings were adjusted to improve dehumidification.
- This should have fixed the humidity problems, but will cool down today and verify it has no impact on operations at the lower temperature settings.
- Run manager report (Javiera)
- 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.
- Elton put together a draft for a new outline. Matt, Zisis and George have provided feedback and will be used to start writting
- IU (Matt) will take the lead on the FCAL section
- UofR (Zisis) will take the lead on the BCAL section.
- Matt and Zisis will request text and/or help in drafting their sections.
- The rest of the working group can provide comments and feedback on initial drafts.
- We will keep track of TDR updates every two weeks at the Cal Working group meeting. The goal is to have a fairly complete draft by the May collaboration meeting.
- Instructions for the TDR (You must be logged into the wiki to access this page).
- Simulations/Reconstruction
- Andrei and Irina continue to run MC jobs to improve shower parameterization in Bcal.
- Any other business