Difference between revisions of "Mar 18, 2010 Calorimetry"
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# Monitoring | # Monitoring | ||
#* Matt to coordinate with Christina on the shipment of glass blocks and pmts/dividers for monitoring system test. | #* Matt to coordinate with Christina on the shipment of glass blocks and pmts/dividers for monitoring system test. | ||
+ | #* Bcal: Testing to see if LED sources can be viewed by pmts on both sides of the module (UofR). | ||
# Fcal | # Fcal | ||
#* Decision on rad hard detectors | #* Decision on rad hard detectors | ||
Line 23: | Line 24: | ||
# Announcements | # Announcements | ||
# Review of Action Items | # Review of Action Items | ||
− | # Calibration/Monitoring | + | # Calibration/Monitoring [[Media:Cal-18-3-09-ath.ppt]] |
# FCAL | # FCAL | ||
#* Construction status | #* Construction status | ||
+ | #* Proceed with order of FEU-84 pmts? | ||
#* To shashlyk or not to shashlyk | #* To shashlyk or not to shashlyk | ||
# BCAL | # BCAL | ||
#* Construction Status | #* Construction Status | ||
+ | #* Module 1 Uniformity [[Media:Module1-Uniformity.pdf]] | ||
+ | # Simulations | ||
# Other Updates | # Other Updates | ||
=Minutes= | =Minutes= | ||
− | Attendees: | + | Attendees:Fernando, Yi, John, Pedro, Tim, Eugene, Elton, Beni, Lubomir, Sasha (JLab); Zisis, Andrei, George (UofR); George, Christina (Athens); Ryan (IU) |
+ | |||
+ | # Announcements | ||
+ | # Review of Action Items | ||
+ | # Calibration/Monitoring [[Media:Cal-18-3-09-ath.ppt]] | ||
+ | ## Adapter manufactured to shine LED to bundle of 16 fibers | ||
+ | ## LED pulsed at 10 V, uniformity sigma=70 mV, and average ~ 600 mV. | ||
+ | ## Likely will need difuser for the final system | ||
+ | ## Will: should plan for one extra fiber per LED to monitor sensor of multiple LEDs. | ||
+ | ## Regina: Have circuit for LED to be used for testing near/far light collection. Use 2x2 cm2 Winston cones and setup initially with pmts. Will also study coupling of LED to lightguide. | ||
+ | ## George V: preliminary test conducted with Baby Bcal and transmit about 25% of light (encouraging). With additional attenuation, might expect a ratio of 1/10 between near and far sensors. | ||
+ | ## Eugene: Consider system where fiber bundle is mechanically attached to light guide group. | ||
+ | # FCAL | ||
+ | ## Rad hard glass resolution studies ongoing. Preliminary results shos that reesolution might be worse than first estimated. | ||
+ | ## Proceed with order of FEU-84 pmts? | ||
+ | ##* JLab has told company that checking pmts will be completed in March, so that order can be sent out. | ||
+ | ##* Gain stability has been good over a few days. | ||
+ | ## To shashlyk or not to shashlyk. Postpone discussion to furture meeting. First need to decide how decision will be made. | ||
+ | # BCAL | ||
+ | ##Construction status | ||
+ | ### Module 05 is up to 170 layers, Module 06 up to 130 layers. | ||
+ | ### By March 24 Module 04 will be finished at RMS and so will be the go-no-go gauge for the alignment pins. | ||
+ | ### On March 27 (Saturday) we are going to RMS to carry out the transmission uniformity tests for Modules 02-04 and go over all travellers. | ||
+ | ### We hope to ship the modules to JLab just before or right after Easter weekend. | ||
+ | ## Fibre tests (Shipment 10) are proceeding nominally. | ||
+ | ## Lead tally is done, we need a teleconference (JLab-Regina) to decide on the quantity of lead for the last shipment and other logistics. | ||
+ | ##* Tim checked with Vulcan. They are preparing the fourth and last shipment for middle of next week. If make-up amount is a few percent, they will add to this shipment. Otherwise, they will schedule a 5th smaller shipment. | ||
+ | ##* (Phone conferencen tomorrow afternoon at 4:00 pm eastern). | ||
+ | ## [[Media:Module1-Uniformity.pdf]] Module 1 uniformity looks reasonable within accuracy of method. | ||
+ | ##* (Notes added by Elton): Poor environment for measurements. Will go on Saturday March 27 to avoid congestion when testing mods 2-4. | ||
+ | ##* Proposal for testing modules 5-48: Use single light source with photographic umbrella and take digital picture for permanent record. | ||
+ | # Simulations | ||
+ | ## List of runs to be discussed at Bcal readout meeting (next week) | ||
+ | # Other Updates | ||
+ | # BCAL |
Latest revision as of 12:52, 18 March 2010
Teleconference Time: 11:00 a.m. EST
- ESNET and EVO session
- Phone in CC F326 is 757-269-6337
- Phone in the Regina Videoconference Suite is 306-585-4204
- Phone only if requested:
- +1-800-377-8846 : US
- +1-888-276-7715 : Canada
- +1-302-709-8424 : International
- then enter participant code: 77438230# (remember the "#"). Phone line by request only.
Contents
Items for followup from previous meeting(s)
- Monitoring
- Matt to coordinate with Christina on the shipment of glass blocks and pmts/dividers for monitoring system test.
- Bcal: Testing to see if LED sources can be viewed by pmts on both sides of the module (UofR).
- Fcal
- Decision on rad hard detectors
- Check instability of FEU-84 pmt gains / finalize number / order additional FEU-84 pmts
Documents to Review
Tentative Agenda
- Announcements
- Review of Action Items
- Calibration/Monitoring Media:Cal-18-3-09-ath.ppt
- FCAL
- Construction status
- Proceed with order of FEU-84 pmts?
- To shashlyk or not to shashlyk
- BCAL
- Construction Status
- Module 1 Uniformity Media:Module1-Uniformity.pdf
- Simulations
- Other Updates
Minutes
Attendees:Fernando, Yi, John, Pedro, Tim, Eugene, Elton, Beni, Lubomir, Sasha (JLab); Zisis, Andrei, George (UofR); George, Christina (Athens); Ryan (IU)
- Announcements
- Review of Action Items
- Calibration/Monitoring Media:Cal-18-3-09-ath.ppt
- Adapter manufactured to shine LED to bundle of 16 fibers
- LED pulsed at 10 V, uniformity sigma=70 mV, and average ~ 600 mV.
- Likely will need difuser for the final system
- Will: should plan for one extra fiber per LED to monitor sensor of multiple LEDs.
- Regina: Have circuit for LED to be used for testing near/far light collection. Use 2x2 cm2 Winston cones and setup initially with pmts. Will also study coupling of LED to lightguide.
- George V: preliminary test conducted with Baby Bcal and transmit about 25% of light (encouraging). With additional attenuation, might expect a ratio of 1/10 between near and far sensors.
- Eugene: Consider system where fiber bundle is mechanically attached to light guide group.
- FCAL
- Rad hard glass resolution studies ongoing. Preliminary results shos that reesolution might be worse than first estimated.
- Proceed with order of FEU-84 pmts?
- JLab has told company that checking pmts will be completed in March, so that order can be sent out.
- Gain stability has been good over a few days.
- To shashlyk or not to shashlyk. Postpone discussion to furture meeting. First need to decide how decision will be made.
- BCAL
- Construction status
- Module 05 is up to 170 layers, Module 06 up to 130 layers.
- By March 24 Module 04 will be finished at RMS and so will be the go-no-go gauge for the alignment pins.
- On March 27 (Saturday) we are going to RMS to carry out the transmission uniformity tests for Modules 02-04 and go over all travellers.
- We hope to ship the modules to JLab just before or right after Easter weekend.
- Fibre tests (Shipment 10) are proceeding nominally.
- Lead tally is done, we need a teleconference (JLab-Regina) to decide on the quantity of lead for the last shipment and other logistics.
- Tim checked with Vulcan. They are preparing the fourth and last shipment for middle of next week. If make-up amount is a few percent, they will add to this shipment. Otherwise, they will schedule a 5th smaller shipment.
- (Phone conferencen tomorrow afternoon at 4:00 pm eastern).
- Media:Module1-Uniformity.pdf Module 1 uniformity looks reasonable within accuracy of method.
- (Notes added by Elton): Poor environment for measurements. Will go on Saturday March 27 to avoid congestion when testing mods 2-4.
- Proposal for testing modules 5-48: Use single light source with photographic umbrella and take digital picture for permanent record.
- Construction status
- Simulations
- List of runs to be discussed at Bcal readout meeting (next week)
- Other Updates
- BCAL