Difference between revisions of "Detailed plan for testing production SiPM units"
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(→Single sensor tests at room temperature (Carl)) |
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== Single sensor tests at room temperature (Carl) == | == Single sensor tests at room temperature (Carl) == | ||
| − | # Check that all cells are operational by scanning across array. | + | # Check that all 16 cells are operational by scanning across array. Identify any problems with individual cells within the array. |
| − | # | + | # Noise levels will be too high to measure dark rate directly -- Dark current will be measured for the array instead. |
| − | # | + | # PDE can be determined relative to single-cell 3x3 mm2 units |
| + | #* Measure output with calibrated light source to determine PDE for array. | ||
| + | # When both sensors are available, measure SensL and Hamamatsu with the same illumination for comparison. | ||
| + | # Also: Desirable to test SensL units at 5 deg. C. | ||
| + | |||
== Single sensor tests at 5 deg (nominal) (Carl) == | == Single sensor tests at 5 deg (nominal) (Carl) == | ||
# Install Peltier on each sensor gluing the Peltier to the "hot plate" and attaching the hot plate to the sensor package using a thermal paste. | # Install Peltier on each sensor gluing the Peltier to the "hot plate" and attaching the hot plate to the sensor package using a thermal paste. | ||
Revision as of 11:39, 5 October 2009
DRAFT DRAFT
Discussion notes of July 23, moved to this page for future development.
Contents
Testing of electronic components (Fernando)
- Fernando showed a tentative SiPM_Dev_Schedule, showing that testing of the electronics should be completed by mid October.
- Output of the preamp will be one signal per array.
Single sensor tests at room temperature (Carl)
- Check that all 16 cells are operational by scanning across array. Identify any problems with individual cells within the array.
- Noise levels will be too high to measure dark rate directly -- Dark current will be measured for the array instead.
- PDE can be determined relative to single-cell 3x3 mm2 units
- Measure output with calibrated light source to determine PDE for array.
- When both sensors are available, measure SensL and Hamamatsu with the same illumination for comparison.
- Also: Desirable to test SensL units at 5 deg. C.
Single sensor tests at 5 deg (nominal) (Carl)
- Install Peltier on each sensor gluing the Peltier to the "hot plate" and attaching the hot plate to the sensor package using a thermal paste.
- Repeat measurements performed at room temperature, but at a nominal operating temperature
- If possible measure the dark rate in this configuration.
Low irradiation
- low radiation, guestimated to be about 0.01 Gy/month)
- Place 6-8 arrays in a box with Sr source (Keep a few for reference)
- Arrays should be powered continuously
- Arrays should be operated at the nominal operating temperature (~5deg) using Peltier
- Arrays should be exposed to temperature cycles
- Output may be monitored using a picoAmmeter
Realistic exposures to radiation
- Measurements in Hall B?
