Difference between revisions of "Jan 15, 2009 Calorimetry"
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= Documents to Review= | = Documents to Review= | ||
− | # [ | + | # [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=1173 GlueX-doc-1173 Fine mesh pmts] |
− | # [ | + | # [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=912 GlueX-doc-912 Magnetic fields at pmt locations] |
= Tentative Agenda = | = Tentative Agenda = | ||
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=Minutes= | =Minutes= | ||
Attending: JLab: Beni, Elton, Fernando; UofR: Zisis, Blake, George, Andrei; IU: Claire, Ryan, Matt, Brad | Attending: JLab: Beni, Elton, Fernando; UofR: Zisis, Blake, George, Andrei; IU: Claire, Ryan, Matt, Brad | ||
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# Announcements: It is cold in Regina (-40). Our next phone conference will be Thu Feb 12. | # Announcements: It is cold in Regina (-40). Our next phone conference will be Thu Feb 12. | ||
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## Redesign of magnetic shield for Fcal to accomodate concentric cylindrical shields. | ## Redesign of magnetic shield for Fcal to accomodate concentric cylindrical shields. | ||
## Hardware status at collaboration meeting | ## Hardware status at collaboration meeting | ||
− | ## | + | ## [http://www.ph.ed.ac.uk/~claire/Tarbert_FCALCalibration.pdf FCAL Calibration with pi0s] presented by Claire. |
##* Became a software project | ##* Became a software project | ||
##* Goals: calibrate detector using pi0 and etas as a source of high energy photons. | ##* Goals: calibrate detector using pi0 and etas as a source of high energy photons. | ||
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# BCAL Update | # BCAL Update | ||
## Fibers | ## Fibers | ||
− | ##* | + | ##* Kuraray will ship first article fibers at the end of the month. 50 fibers to Regina, 50 to JLab and keep 50 at Kuraray. Length will be 410 +4/-0 with label on the last 2 cm. |
##* Beni is setting up automatic procedures for testing fibers. Present 90Sr source rate is limited and will require about 1 day for a complete test of one fiber. | ##* Beni is setting up automatic procedures for testing fibers. Present 90Sr source rate is limited and will require about 1 day for a complete test of one fiber. | ||
##* UofR: Attenuation length measurements using the UV spectrometer can be done very fast. Tests with a 90Sr source is more time consuming, and uses the same DAQ system as the tests for the SiPM. | ##* UofR: Attenuation length measurements using the UV spectrometer can be done very fast. Tests with a 90Sr source is more time consuming, and uses the same DAQ system as the tests for the SiPM. | ||
+ | ##* Handling proceedures during construction will be written up by UofR for comments by Kuraray | ||
## Construction | ## Construction | ||
##* UofR is obtaining more information from Ross machining about their cutting and polishing capabilities, as well as hourly rates | ##* UofR is obtaining more information from Ross machining about their cutting and polishing capabilities, as well as hourly rates | ||
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##* Andrei is investigating charged particle energy depositions in calorimeter as a way to calibrate the detector. | ##* Andrei is investigating charged particle energy depositions in calorimeter as a way to calibrate the detector. | ||
## B-field at pmts | ## B-field at pmts | ||
− | ##* Elton has updated[ | + | ##* Elton has updated [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=912 GlueX-doc-912 Magnetic fields at pmt locations] using the new ANSYS magnetic fields. |
##* The angle of the field relative to the z-axis is quite large and it will be a challenge to find good operating point for the fine mesh pmts. | ##* The angle of the field relative to the z-axis is quite large and it will be a challenge to find good operating point for the fine mesh pmts. | ||
# [[GlueX-Collaboration-Jan-2009 | GlueX collaboration meeting]] | # [[GlueX-Collaboration-Jan-2009 | GlueX collaboration meeting]] | ||
#* Fcal hardware (Matt) | #* Fcal hardware (Matt) | ||
#* Bcal updates (Zisis or George) | #* Bcal updates (Zisis or George) | ||
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#* SiPM update (Carl) | #* SiPM update (Carl) | ||
+ | #* Bcal construction (Elton) | ||
#* Calibration using pi0 photons (Claire) in offline session | #* Calibration using pi0 photons (Claire) in offline session | ||
# Any other business | # Any other business |
Latest revision as of 17:14, 24 February 2017
Teleconference Time: 11:00 EST/10:00 CST
- Phone:
- +1-800-377-8846 : US
- +1-888-276-7715 : Canada
- +1-302-709-8424 : International
- then enter participant code: 39527048# (remember the "#")
Contents
Items for followup from Dec 22 meeting
- Resolution studies (Blake)
- Develop criteria for evaluating resolution studies
- Study impact of inactive material at the end of Bcal on acceptance.
- Check what configuration (thresholds, step sizes, stack? parameters for secondaries, etc) is being used for the Hall D simulations (Regina)
- Report on the Bfield components in the region of the Bcal readout (JLab for next meeting).
- Options for vendors delivering specific lead sheet sizes (Tim)
Documents to Review
Tentative Agenda
- Announcements
- FCAL Update
- FCAL Calibration Claire's Slides (PDF)
- BCAL Update
- Bcal construction schedule
- First Article Fibers from Kuraray arrive first week in February (need fiber handling procedures)
- Preparations in Alberta (MOU, space, construction manager, QA plans, machining Pb)
- Magnetic Field Update (Elton)
- Updates on SiPM tests
- Bcal construction schedule
- GlueX collaboration meeting
- Any other business
Minutes
Attending: JLab: Beni, Elton, Fernando; UofR: Zisis, Blake, George, Andrei; IU: Claire, Ryan, Matt, Brad
- Announcements: It is cold in Regina (-40). Our next phone conference will be Thu Feb 12.
- FCAL Update
- Redesign of magnetic shield for Fcal to accomodate concentric cylindrical shields.
- Hardware status at collaboration meeting
- FCAL Calibration with pi0s presented by Claire.
- Became a software project
- Goals: calibrate detector using pi0 and etas as a source of high energy photons.
- Not yet determined accuracy possible for calibration, but considerable effort has gone into putting the necessary tools in place.
- BCAL Update
- Fibers
- Kuraray will ship first article fibers at the end of the month. 50 fibers to Regina, 50 to JLab and keep 50 at Kuraray. Length will be 410 +4/-0 with label on the last 2 cm.
- Beni is setting up automatic procedures for testing fibers. Present 90Sr source rate is limited and will require about 1 day for a complete test of one fiber.
- UofR: Attenuation length measurements using the UV spectrometer can be done very fast. Tests with a 90Sr source is more time consuming, and uses the same DAQ system as the tests for the SiPM.
- Handling proceedures during construction will be written up by UofR for comments by Kuraray
- Construction
- UofR is obtaining more information from Ross machining about their cutting and polishing capabilities, as well as hourly rates
- Will run some short lengths of Pb through the swager. Examine samples of Pb under the microscope to optimze swager settings, before shipping swager to Alberta.
- Shower reconstruction
- Blake has new results but they were not yet ready for presentation. Should have something to show at the collaboration meeting
- Andrei is investigating charged particle energy depositions in calorimeter as a way to calibrate the detector.
- B-field at pmts
- Elton has updated GlueX-doc-912 Magnetic fields at pmt locations using the new ANSYS magnetic fields.
- The angle of the field relative to the z-axis is quite large and it will be a challenge to find good operating point for the fine mesh pmts.
- Fibers
- GlueX collaboration meeting
- Fcal hardware (Matt)
- Bcal updates (Zisis or George)
- SiPM update (Carl)
- Bcal construction (Elton)
- Calibration using pi0 photons (Claire) in offline session
- Any other business