Proton Calorimetry/Experimental Runs/2020/Oct23

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)