Difference between revisions of "April 15, 2008 Calorimetry"
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# [[SensL SiPMs | SiPMs]] | # [[SensL SiPMs | SiPMs]] | ||
#* Criteria for selecting SiPM type | #* Criteria for selecting SiPM type | ||
− | #* | + | #* UR tests |
+ | #*# IV curves | ||
+ | #*# Scanning SiPMs for uniformity. Current illumination is 1mm diameter, but improving setup to 0.25 mm diameter to allow for finer scans. | ||
+ | #*# Use coupling to fiber array to measure light yield and normalized to the number of photoelectrons. [Array is about 2x1.8x25 cm3. On one side the fibers are flared out and coupled to a Winston Cone guide. | ||
+ | #* JLab tests, use optical setup using LEDs | ||
+ | #*# IV curve | ||
+ | #*# Linearity of response | ||
+ | #*# Relative gain | ||
+ | #*# Dark rate | ||
+ | #*# Timing characteristics. [Notes from George: timing response of newer glass arrays show rise times of about 10 ns, and contained in a 70-75] | ||
+ | #*# Later, not in initial tests: temperature dependence of units. | ||
#** What | #** What | ||
#** Where | #** Where |
Revision as of 09:25, 15 April 2008
Connection
- The meeting will be held at 10:30 am ET
- Phone:
- +1-800-377-8846 : US
- +1-888-276-7715 : Canada
- +1-302-709-8424 : International
- then enter participant code: 39527048# (remember the "#")
Reference Documents
- Previous minutes: March 21, 2008 Calorimetry
- Schedule, Tracker and Drawings (gluex pass)
- Schedule
Tentative Agenda
- Review Options for Working Group Meeting Time
- SiPMs
- Criteria for selecting SiPM type
- UR tests
- IV curves
- Scanning SiPMs for uniformity. Current illumination is 1mm diameter, but improving setup to 0.25 mm diameter to allow for finer scans.
- Use coupling to fiber array to measure light yield and normalized to the number of photoelectrons. [Array is about 2x1.8x25 cm3. On one side the fibers are flared out and coupled to a Winston Cone guide.
- JLab tests, use optical setup using LEDs
- IV curve
- Linearity of response
- Relative gain
- Dark rate
- Timing characteristics. [Notes from George: timing response of newer glass arrays show rise times of about 10 ns, and contained in a 70-75]
- Later, not in initial tests: temperature dependence of units.
- What
- Where
- Fiber Specifications
- Response of Kuraray and St. Gobain to the request to JLab sources sought / do we need more samples?
- Summary of fiber spectra analysis (Alex) [1]
- How to specify a) Fiber color/spectrum and b) light output
- JLab Tests (Carl)
- Review of Action Item Tracker
- Fabrication plan and QA /visit to Alberta?
- FCAL Update
- A few plots that show typical FADC response and time resolution that migh be achieved (Mihajlo)
- BCAL Update
- SiPm gain non-uniformities and energy resolution (Richard)
- Calibration Update / Discussion (Athens) - postponed to next meeting
- Goals for calibration
- Deployment in various subsystems
- Any other business