Difference between revisions of "Dec 6, 2011 Calorimetry"

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# Monitoring
 
# Monitoring
−
#* Send Christina drawings of light guides, both versions (Elton)
 
−
#* Send Christina precisely which geometry/version of light guides were shipped (Iñaki)
 
 
#* Send additional SiPMs to Athens for tests (Elton)
 
#* Send additional SiPMs to Athens for tests (Elton)
−
# USM testing
+
#* <strike> Measure stability of light intensity as a function of time. </strike> Measurement in progress, will report at a later meeting.
−
#* Web site test next Monday.
+
#* Jlab to generate a drawing of the plexiglass sheet to be used in next batch of tests.
−
#* Show data from dark box at next meeting.
+
#* <strike> Specify/clarify requirement for monitoring light uniformity into the Pb glass (Matt) </strike>
 +
# FCAL
 +
#* Send IU the drawings for the FCAL welded frame. (Tim)
  
 
= Tentative Agenda =
 
= Tentative Agenda =
Line 33: Line 33:
 
## Fibres
 
## Fibres
 
# USM update
 
# USM update
−
# Simulations/Reconstruction
+
# [[Readiness Review: Testing of light sensors for Bcal]]
 +
# Simulations/Reconstruction: [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=1791 Standalone MC], leakage at 12 degrees
 
# Any other business
 
# Any other business
  
 
=Minutes=
 
=Minutes=
−
''Attending:
+
''Attending: Zisis, George, Andrei (UofR); Alam, Ricardo (USM); Christina, George, Pavlos (Athens); Elton, David, Yi, John D., Eugene, John L. (Jlab); Matt, Kei (IU);
 +
 
 +
# Announcements
 +
# Review of Action Items
 +
# Monitoring.
 +
#* Action items need to be acted on. Elton will check up on drawing for plexiglass.
 +
#* Matt checked work by Claire Tarbert. GlueX document assumes that input monitoring constants are determined to +/- 20%. Suggest illumination uniformity of plane to be within +/-20% of mean.
 +
#* Mail exchanges with Kappos, promised delivery of design by mid Jan for Jlab approval.
 +
#* George: Intensity test are ongoing to determine stability of system. Will report at a later meeting.
 +
# Beam tests in Hall B (fall 2011) (John)
 +
#* Collecting data for several weeks
 +
#* Daq issues found and resolved.
 +
#* Aligning detector using coincidences of trigger counters. Finding alignment such that there is uniform distribution around triggered counter
 +
#* Gain balancing is under way
 +
#* Dave Lawrence is taking advantage of the beam test to develop some online tools for viewing the data
 +
#* One base is acting up and is under investigation
 +
#* Data is being logged onto the elog hdfcaltest
 +
# FCAL
 +
## Construction Status: mechanical, bases (notes from Matt)
 +
#* Received the second batch of 100 boards. 10 had soldering/cleaning problems.
 +
#* Continue to assess the pmts
 +
# BCAL
 +
## Construction Status: builds, mini module
 +
##* Last Bcal modules arrived intact this morning. Modules 45-49 + mini-Bcal
 +
##* The support frame for the mini-Bcal was also included. A manual is available at a time that the detector will be assembled
 +
## Fibres
 +
##* All fibers have been measured.
 +
##* Evaluation is not yet complete, but will be summarized into a final report
 +
##* There is left over lead and fibers (approx. 10,000 fibers)
 +
##* Spectral analysis of one fiber from each of the batches has been taken at various positions along the fiber for reference
 +
## Celebration event
 +
##* Date is not yet final 27 or 30 of Jan.
 +
##* Claus is waiting to make travel arrangements.
 +
# USM update
 +
#* PDE data is now appearing on web site
 +
#* Data for testing the web interface is almost complete
 +
#* There a still some mapping problems, which need to be resolved
 +
#* Student is working on fitting data.
 +
#* Yi took a first look at some spectra and finds some non-linearities between peaks
 +
#* Decided to try to find a time on Friday to discuss the USM data
 +
# [[Readiness Review: Testing of light sensors for Bcal]]
 +
# Simulations/Reconstruction: [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=1791 Standalone MC], leakage at 12 degrees
 +
#* Simulations have been completed at 12 degrees to cover the angular range on the Bcal
 +
#* Leakage was studied out the front (albedo), back, sides and ends. Leakage was measured, and is about 8% at high energies.
 +
#* Simulations were conducted for B=0.
 +
# Any other business

Latest revision as of 16:48, 24 February 2017

Teleconference Time: 11:00 a.m. EST'

  • ESNET (Number is 8542553) and EVO session (GlueX Calorimetry meeting room)
  • JLab Phone: in CC F326 is 757-269-6337; JLab Phone in CC L207 is 757-269-7084
  • Athens Phone: in Christina's office is 011-30-210-727-6947
  • Regina Phone: in LB228 is 306-585-4204
  • 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 #)

Items for followup from previous meeting(s)

  1. Monitoring
    • Send additional SiPMs to Athens for tests (Elton)
    • Measure stability of light intensity as a function of time. Measurement in progress, will report at a later meeting.
    • Jlab to generate a drawing of the plexiglass sheet to be used in next batch of tests.
    • Specify/clarify requirement for monitoring light uniformity into the Pb glass (Matt)
  2. FCAL
    • Send IU the drawings for the FCAL welded frame. (Tim)

Tentative Agenda

  1. Announcements
  2. Review of Action Items
  3. Monitoring.
  4. Beam tests in Hall B (fall 2011) (John)
  5. FCAL
    1. Construction Status: mechanical, bases (notes from Matt)
  6. BCAL
    1. Construction Status: builds, mini module
    2. Fibres
  7. USM update
  8. Readiness Review: Testing of light sensors for Bcal
  9. Simulations/Reconstruction: Standalone MC, leakage at 12 degrees
  10. Any other business

Minutes

Attending: Zisis, George, Andrei (UofR); Alam, Ricardo (USM); Christina, George, Pavlos (Athens); Elton, David, Yi, John D., Eugene, John L. (Jlab); Matt, Kei (IU);

  1. Announcements
  2. Review of Action Items
  3. Monitoring.
    • Action items need to be acted on. Elton will check up on drawing for plexiglass.
    • Matt checked work by Claire Tarbert. GlueX document assumes that input monitoring constants are determined to +/- 20%. Suggest illumination uniformity of plane to be within +/-20% of mean.
    • Mail exchanges with Kappos, promised delivery of design by mid Jan for Jlab approval.
    • George: Intensity test are ongoing to determine stability of system. Will report at a later meeting.
  4. Beam tests in Hall B (fall 2011) (John)
    • Collecting data for several weeks
    • Daq issues found and resolved.
    • Aligning detector using coincidences of trigger counters. Finding alignment such that there is uniform distribution around triggered counter
    • Gain balancing is under way
    • Dave Lawrence is taking advantage of the beam test to develop some online tools for viewing the data
    • One base is acting up and is under investigation
    • Data is being logged onto the elog hdfcaltest
  5. FCAL
    1. Construction Status: mechanical, bases (notes from Matt)
    • Received the second batch of 100 boards. 10 had soldering/cleaning problems.
    • Continue to assess the pmts
  6. BCAL
    1. Construction Status: builds, mini module
      • Last Bcal modules arrived intact this morning. Modules 45-49 + mini-Bcal
      • The support frame for the mini-Bcal was also included. A manual is available at a time that the detector will be assembled
    2. Fibres
      • All fibers have been measured.
      • Evaluation is not yet complete, but will be summarized into a final report
      • There is left over lead and fibers (approx. 10,000 fibers)
      • Spectral analysis of one fiber from each of the batches has been taken at various positions along the fiber for reference
    3. Celebration event
      • Date is not yet final 27 or 30 of Jan.
      • Claus is waiting to make travel arrangements.
  7. USM update
    • PDE data is now appearing on web site
    • Data for testing the web interface is almost complete
    • There a still some mapping problems, which need to be resolved
    • Student is working on fitting data.
    • Yi took a first look at some spectra and finds some non-linearities between peaks
    • Decided to try to find a time on Friday to discuss the USM data
  8. Readiness Review: Testing of light sensors for Bcal
  9. Simulations/Reconstruction: Standalone MC, leakage at 12 degrees
    • Simulations have been completed at 12 degrees to cover the angular range on the Bcal
    • Leakage was studied out the front (albedo), back, sides and ends. Leakage was measured, and is about 8% at high energies.
    • Simulations were conducted for B=0.
  10. Any other business
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