Oct 1, 2009 Calorimetry
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Meeting will be dedicated to Calibration and Monitoring
Teleconference Time: 11:00 a.m. EST
- ESNET and EVO session
- 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 "#"). Note: code changed 7/2/09
Contents
Items for followup from previous meeting(s)
- Requirement of hardware gain matching of pmts for Fcal (and also Bcal)
- Fcal
- John iterating on support frame. Key load-bearing tubes, currenlty Al, could they switch to iron? Tim needs to weigh in on this one.
- Need to discuss strategy for fabrication of boards. Paul is concerned primarily about the HV board. We should include Fernando and Chris on the discussion for suggestion of production.
-
Fastrack schedule: Matt asked if Fasttrack has a facility for "resource leveling". Does anyone know? - Magnetic shield tests? (Tim needs to provide feedback)
-
Eugene: Fcal activity on calibration is scheduled to start next month. We need to formally address it.Elton and Eugene working on CR to modify schedule for a few activities.
- Bcal
- Web page needs to be setup for communications.
A mid-month report is also due. (Zisis) - Two components fit for fiber attenuation (Zisis)
- Web page needs to be setup for communications.
- Bcal readout
-
Provide information on FM pmt cathode diameters (Elton) - Slide 8: Matt Suggestion: Plot efficiency vs. a specific angle to understand behavior. (Alam)
- Review decision on the orientation of FM pmt relative to Bfield, including tolerances due to expected field changes. (Elton, Will, Alam, Pedro)
-
Documents to Review
Tentative Agenda
- Announcements
- Review of Action Items
- Calibration/Monitoring
- Fcal
- Bcal
- Status of construction / Readiness Review Schedule
- Fibre QA: Media:FibreQA_20091001.pdf
- BCAL Readout
- SiPM testing - are we ready? (Carl and Fernando)
- (Elton) Light guide simulations Media:Draw trigs 38deg.pdf Media:Draw trigs 73deg.pdf for segment #2. Entrance rectangle is 3.01x4.0 cm. Exit radius is 1.35 cm. Length of trapezoid/cone is 60 cm, and length of torus is also 60 cm. This configuration should be comparable to Alam's "cylindrical cone" geometry. See also Effective diameter vs B field and angle from Antonelli et al., NIMA 368 (1996) 628-634.
Angle | geometrical | total |
---|---|---|
(deg) | efficiency (%) | efficiency (%) |
41.3 | 98.8 | 57.2 |
54.4 | 57.2 | |
73.0 | 97.4 | 55.3 |
90.1 | 97.4 | 55.2 |
- Simulation
- Other business
Minutes
Attendees: