Difference between revisions of "Nov 17, 2010 Calorimetry"
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− | '''<font color=red>Teleconference Time: | + | '''<font color=red>Teleconference Time: 9:00 a.m. EST</font>''' |
* <font color=green>ESNET (Number is 8542553) and EVO session (GlueX Calorimetry meeting room)</font> | * <font color=green>ESNET (Number is 8542553) and EVO session (GlueX Calorimetry meeting room)</font> | ||
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* Regina Phone: in LB228 is 306-585-4204 | * Regina Phone: in LB228 is 306-585-4204 | ||
* Athens Phone: in Christina's office is 011-30-210-727-6947 | * 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)= | =Items for followup from previous meeting(s)= | ||
Line 20: | Line 17: | ||
# Calibration | # Calibration | ||
− | ## Calibration/Monitoring | + | ## Calibration/Monitoring minutes: [[Oct 26, 2010 Calibration/Monitoring]] |
− | ## 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) | ||
# Announcements | # Announcements | ||
#* Change of meeting time? | #* Change of meeting time? | ||
Line 27: | Line 25: | ||
# FCAL | # FCAL | ||
## Construction Status | ## Construction Status | ||
− | ## Rad Hard Insert | + | ## 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 | ||
+ | ## Readout segmentation | ||
# Simulations | # Simulations | ||
# Other Updates | # Other Updates | ||
Line 35: | Line 34: | ||
=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)
- Monitoring
- Specifications for BCAL Monitoring R&D (Zisis, Elton, Christina)
- SiPMs
- IU: simulation using geometry for summed units
Tentative Agenda
- Calibration
- Calibration/Monitoring minutes: Oct 26, 2010 Calibration/Monitoring
- GlueX-doc-1640 Update on Fcal monitoring (Athens)
- Requirements for Bcal monitoring : Calibration Specifications Table for BCAL, FCAL, TOF and START (Elton, Zisis and Christina)
- Announcements
- Change of meeting time?
- Review of Action Items
- FCAL
- Construction Status
- Rad Hard Insert - GlueX-doc-1641 Update on Damage Analysis
- BCAL
- Construction Status
- Readout segmentation
- Simulations
- 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);
- Calibration
- Calibration/Monitoring minutes: Oct 26, 2010 Calibration/Monitoring
- 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 : 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 - 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.
- Construction Status
- 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.
- Construction Status
- Simulations
- Other Updates