Proton Calorimetry/Experimental Runs/2020/Oct23

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23 Oct 2020


LED injected light measurements

Setup: - scintillator sheets number from top to bottom in vice/enclosure sequence: 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 - 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 - painted side of the stack with fibre holes on top, PDs placed 90deg w.r.t. the injection side.

Aim: Take large statistics runs to caracterise photodiodes. Plan is to insert light into sheet n. 8 and measure the light output with different photodiodes arrays, integration time and full scale.

list of runs in this file unix/pbt/data/ucl/20201023/20201023_LEDandADCBoard.xlsx data saved in unix/pbt/data/ucl/20201023/

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 - 8 170us 350pC FSR Saad's (PDs: S1337-16BR)
2 4.5 1 300 - 8 170us 12.5pC FSR Saad's (PDs: S1337-16BR)
3 4.5 1 300 - 8 170us 200pC FSR Saad's (PDs: S1337-16BR)
4 4.5 1 300 - 8 2000us 350pC FSR Saad's (PDs: S1337-16BR)
5 4.5 1 300 - 8 2000us 200pC FSR Saad's (PDs: S1337-16BR)
6 4.5 1 300 - 8 2000us 50pC FSR Saad's (PDs: S1337-16BR)
7 4.5 1 300 - 8 2000us 50pC FSR Raffy's (PDs: S12915-16R) Different PDs array
8 4.5 1 300 - 8 2000us 200pC FSR Raffy's (PDs: S12915-16R)
9 4.5 1 300 - 8 2000us 350pC FSR Raffy's (PDs: S12915-16R)
10 4.5 1 300 - 8 170us 350pC FSR Raffy's (PDs: S12915-16R)
11 4.5 1 300 - 8 170us 200pC FSR Raffy's (PDs: S12915-16R)
12 4.5 1 300 - 8 170us 12.5pC FSR Raffy's (PDs: S12915-16R)
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