Difference between revisions of "Nov 17, 2010 Calorimetry"

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(Tentative Agenda)
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# Calibration
 
# Calibration
 
## Calibration/Monitoring minutes: [[Oct 26, 2010 Calibration/Monitoring]]
 
## Calibration/Monitoring minutes: [[Oct 26, 2010 Calibration/Monitoring]]
## [http://argus.phys.uregina.ca/cgi-bin/private/DocDB/ShowDocument?docid=1640 GlueX-doc-1640] Update on Fcal monitoring (Athens)
+
## [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=1640 GlueX-doc-1640] Update on Fcal monitoring (Athens)
 
## Requirements for Bcal monitoring : [http://www.jlab.org/Hall-D/software/wiki/index.php/Sep_2%2C_2008_Calorimetry#Calibration_Specifications_Table Calibration Specifications Table] for BCAL, FCAL, TOF and START (Elton, Zisis and Christina)
 
## Requirements for Bcal monitoring : [http://www.jlab.org/Hall-D/software/wiki/index.php/Sep_2%2C_2008_Calorimetry#Calibration_Specifications_Table Calibration Specifications Table] for BCAL, FCAL, TOF and START (Elton, Zisis and Christina)
 
# Announcements
 
# Announcements
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# FCAL
 
# FCAL
 
## Construction Status
 
## Construction Status
## Rad Hard Insert - [http://argus.phys.uregina.ca/cgi-bin/private/DocDB/ShowDocument?docid=1641 GlueX-doc-1641] Update on Damage Analysis
+
## Rad Hard Insert - [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=1641 GlueX-doc-1641] Update on Damage Analysis
 
# BCAL
 
# BCAL
 
## Construction Status
 
## Construction Status
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=Minutes=
 
=Minutes=
  
''Attendees:
+
''Attendees: Zisis, George (UofR); George V., Christina (Athens); Elton, Jack McKisson, Beni, Tim, Eugene, Yi, Fernando (JLab); Will (USM); Ryan, Matt, Mijahlo, Kei (IU);
 +
 
 +
# Calibration
 +
## Calibration/Monitoring minutes: [[Oct 26, 2010 Calibration/Monitoring]]
 +
## [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=1640 GlueX-doc-1640] Update on Fcal monitoring (Athens)
 +
##* Improved configuration for uniformity. Replaced LEDs, 5mm lucite sheet, use filters to adjust uniformity.
 +
##* Need to investigate optimum thickness of lucite sheet, and method of attaching LEDs
 +
##* Final design needs prototyping. Matt suggested dividing the sheet into quadrants. IU will provide mechanical drawings to help design attachment and connection points.
 +
##* Matt: Suggestion to use different color LEDs to probe various configurations of energy deposition.
 +
##* Eugene: Note that radiation damage depnds on configuration, so interpretation of reponse to different color LEDs requires simulation. Matt: Brad has model for energy deposition, so it could be use to unfold response.
 +
##* Lubomir: Need to check cross talk of signals from module to module. Matt: this can be done on IU prototype. Eugene noted that percent cross talk can have important impact on position measurements.
 +
## Requirements for Bcal monitoring : [http://www.jlab.org/Hall-D/software/wiki/index.php/Sep_2%2C_2008_Calorimetry#Calibration_Specifications_Table Calibration Specifications Table] for BCAL, FCAL, TOF and START (Elton, Zisis and Christina)
 +
# Announcements
 +
#* Meeting time will move up to 10:30 starting on Dec 2 for both Cal working group and Bcal readout. (Tomorrow's meeting will stay at 11:00 am).
 +
# Review of Action Items
 +
# FCAL
 +
## Construction Status
 +
##* Moving forward according to schedule
 +
##* CW bases contract is out. Paul to visit vendor tomorrow. Expect first article units first week in December. Will get update during visit tomorrow.
 +
##* Tim: Space at JLab is requested for Feb for receipt of wrapped blocks. Matt to provide optimum schedule for shipping based on technician work plan.
 +
##* Request JLab decide on disposition of Fcal cables to free up space at IU.
 +
## Rad Hard Insert - [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=1641 GlueX-doc-1641] Update on Damage Analysis (Brad)
 +
##* Determine number of rad hard blocks to include into insert. Present estimate is between 100-180 blocks.
 +
##* Lubomir: Should make sure that one takes into account an average over time of damage. Ryan: Variation of damage vs time is also a consideration.
 +
##* Eugene: consider a minimal insert with the option of partial restacking of calorimeter after about 5 years of operation.
 +
##* IU will write up the analysis into a note with a proposal for number of blocks to be included in the insert.
 +
##* Eugene noted that some comparison with published data on damage would be useful. Lubomir to provide references on radiation damage.
 +
# BCAL
 +
## Construction Status
 +
##* Module 23 completed, and mod 24 to be completed this week.
 +
##* Machining of 21-24 will start in early Dec, shipment expected in Jan.
 +
##* Fiber shipment #18 arrived. Latest measurements of #15 show a tight distribution, but Npe number somewhat lower than previous shipments. Will check data with Hamamatsu in case there have been any changes.
 +
## Readout segmentation
 +
##* [Notes from Matt] There has been progress in developing the system to make it easy to change configuration of sums. Results will be reported in a future meeting.
 +
# Simulations
 +
# Other Updates

Latest revision as of 17:13, 24 February 2017

Teleconference Time: 9:00 a.m. EST

  • ESNET (Number is 8542553) and EVO session (GlueX Calorimetry meeting room)
  • JLab Phone: in CC F326 is 757-269-6337
  • Regina Phone: in LB228 is 306-585-4204
  • Athens Phone: in Christina's office is 011-30-210-727-6947
  • Today the phone is connected to the EVO session.


Items for followup from previous meeting(s)

  1. Monitoring
  2. SiPMs
    • IU: simulation using geometry for summed units

Tentative Agenda

  1. Calibration
    1. Calibration/Monitoring minutes: Oct 26, 2010 Calibration/Monitoring
    2. GlueX-doc-1640 Update on Fcal monitoring (Athens)
    3. Requirements for Bcal monitoring : Calibration Specifications Table for BCAL, FCAL, TOF and START (Elton, Zisis and Christina)
  2. Announcements
    • Change of meeting time?
  3. Review of Action Items
  4. FCAL
    1. Construction Status
    2. Rad Hard Insert - GlueX-doc-1641 Update on Damage Analysis
  5. BCAL
    1. Construction Status
    2. Readout segmentation
  6. Simulations
  7. Other Updates

Minutes

Attendees: Zisis, George (UofR); George V., Christina (Athens); Elton, Jack McKisson, Beni, Tim, Eugene, Yi, Fernando (JLab); Will (USM); Ryan, Matt, Mijahlo, Kei (IU);

  1. Calibration
    1. Calibration/Monitoring minutes: Oct 26, 2010 Calibration/Monitoring
    2. GlueX-doc-1640 Update on Fcal monitoring (Athens)
      • Improved configuration for uniformity. Replaced LEDs, 5mm lucite sheet, use filters to adjust uniformity.
      • Need to investigate optimum thickness of lucite sheet, and method of attaching LEDs
      • Final design needs prototyping. Matt suggested dividing the sheet into quadrants. IU will provide mechanical drawings to help design attachment and connection points.
      • Matt: Suggestion to use different color LEDs to probe various configurations of energy deposition.
      • Eugene: Note that radiation damage depnds on configuration, so interpretation of reponse to different color LEDs requires simulation. Matt: Brad has model for energy deposition, so it could be use to unfold response.
      • Lubomir: Need to check cross talk of signals from module to module. Matt: this can be done on IU prototype. Eugene noted that percent cross talk can have important impact on position measurements.
    3. Requirements for Bcal monitoring : Calibration Specifications Table for BCAL, FCAL, TOF and START (Elton, Zisis and Christina)
  2. Announcements
    • Meeting time will move up to 10:30 starting on Dec 2 for both Cal working group and Bcal readout. (Tomorrow's meeting will stay at 11:00 am).
  3. Review of Action Items
  4. FCAL
    1. Construction Status
      • Moving forward according to schedule
      • CW bases contract is out. Paul to visit vendor tomorrow. Expect first article units first week in December. Will get update during visit tomorrow.
      • Tim: Space at JLab is requested for Feb for receipt of wrapped blocks. Matt to provide optimum schedule for shipping based on technician work plan.
      • Request JLab decide on disposition of Fcal cables to free up space at IU.
    2. Rad Hard Insert - GlueX-doc-1641 Update on Damage Analysis (Brad)
      • Determine number of rad hard blocks to include into insert. Present estimate is between 100-180 blocks.
      • Lubomir: Should make sure that one takes into account an average over time of damage. Ryan: Variation of damage vs time is also a consideration.
      • Eugene: consider a minimal insert with the option of partial restacking of calorimeter after about 5 years of operation.
      • IU will write up the analysis into a note with a proposal for number of blocks to be included in the insert.
      • Eugene noted that some comparison with published data on damage would be useful. Lubomir to provide references on radiation damage.
  5. BCAL
    1. Construction Status
      • Module 23 completed, and mod 24 to be completed this week.
      • Machining of 21-24 will start in early Dec, shipment expected in Jan.
      • Fiber shipment #18 arrived. Latest measurements of #15 show a tight distribution, but Npe number somewhat lower than previous shipments. Will check data with Hamamatsu in case there have been any changes.
    2. Readout segmentation
      • [Notes from Matt] There has been progress in developing the system to make it easy to change configuration of sums. Results will be reported in a future meeting.
  6. Simulations
  7. Other Updates