Proton Calorimetry/Experimental Runs/2020/Oct7
07 Oct 2020
LED injected light measurements
Setup: - scintillator sheets number from bottom to top in sensor image: 51, 31, 50, 52, 34, 44, 53, 47, 33, 54, 46, 42, 55, 45, 38, 36, 43, 32, 48, 41, 8, 39, 40, 37, 35, 49, 9 + other sheet as fillers - CMOS ISDI Image sensor. Sensor was allowed to heat up for an hour before measurements - 16 Photodiodes covering the sheets sequence 42, 55, 45, 38, 36, 43, 32, 48, 41, 8, 39, 40, 37, 35, 49, 9. - Optical fibre used with optical gel to couple LED to scintillator sheet n. 8
Aim: Compare light output from sensor and photodiodes. Plan is to insert light into sheet n. 8 and measure the light output with the CMOS sensor and different photodiodes arrays.
list of runs in this file unix/pbt/data/ucl/20201007/20201007_LEDandADCBoard.xlsx data saved in unix/pbt/data/ucl/20201007/
| Run | LED Voltage (V) | LED Period (us) | Width (ns) | Sensor Full Well Mode | Illuminated sheet | DDC int time | DDC Full scale | DDC Board and photodiodes | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 4.5 | 1 | 300 | high | 8 | 170us | 350pC FSR | Saad's (PDs: S1337-16BR) | PD placed opposite to the LED fibre |
| 2 | 4.5 | 1 | 300 | high | 8 | 170us | 350pC FSR | Saad's (PDs: S1337-16BR) | Sensor removed and PD placed 90deg to the fibre, in the spot of highes intensity seen by the sensor |
| 3 | 4.5 | 1 | 300 | high | 8 | 2000us | 350pC FSR | Saad's (PDs: S1337-16BR) | |
| 4 | 4.5 | 1 | 300 | high | 8 | 2000us | 12.5pC FSR | Saad's (PDs: S1337-16BR) | |
| 5 | 4.5 | 1 | 300 | high | 8 | 20000us | 100pC FSR | Saad's (PDs: S1337-16BR) | |
| 6 | 4.5 | 1 | 300 | high | 8 | 170us | 12.5pC FSR | Saad's (PDs: S1337-16BR) | |
| 7 | 4.5 | 1 | 300 | high | 8 | 170us | 12.5pC FSR | Raffy's (PDs: S12915-16R) | |
| 8 | 4.5 | 1 | 300 | high | 8 | 170us | 12.5pC FSR | Raffy's (PDs: S12915-16R) | large statistics for noise analysis |
| 9 | 4.5 | 1 | 300 | high | 8 | 170us | 350pC FSR | Saad's (PDs: S1337-16BR) | large statistics for noise analysis |
| 10 | 4.5 | 1 | 300 | high | 8 | 2000us | 12.5pC FSR | Raffy's (PDs: S12915-16R) | large statistics for noise analysis |
| 11 | 4.5 | 1 | 300 | high | 8 | 2000us | 100pC FSR | Raffy's (PDs: S12915-16R) | large statistics for noise analysis |