Proton Calorimetry/Experimental Runs/2020/Nov12: Difference between revisions

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Revision as of 11:08, 16 November 2020

First prototype DDC232 board with Hamamatsu S1337-16BR photodiodes exposed to small amounts of ambient daylight.

Aim: Investigate performance of DDC232 board with different integration times and full-scale range (FSR) out of detector setup and with uniform light source (daylight).

Notes

  • Each run took approximately 20,000,000 bytes of data, corresponding to about 240,000 samples.
  • Data was taken in afternoon and during sunset, therefore latter measurements had a smaller absolute amount of light. Measurements with 2000 us were essentially dark measurements.
  • Analysis involves histograms of measured values by channel and by photodiode, where channels corresponding to the same photodiode were summed before histogram. Additionally, evolution of measured value with sample number was also investigated.

Data saved in unix/pbt/data/ucl/20201112/

Run Integration time (us) FSR (pC) Notes
1 170 350
2 170 300
3 170 250 Large variation in sunlight
4 170 200
5 170 150
6 170 100
7 170 50
8 170 12.5
9 1000 350
10 1000 300
11 1000 250
12 1000 200
13 1000 150
14 1000 100
15 1000 50
16 1000 12.5
17 2000 350
18 2000 300
19 2000 250
20 2000 200
21 2000 150
22 2000 100
23 2000 50
24 2000 12.5