View source for 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/

{|class="wikitable"
!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)|| 	
|-