Threshold & HV study: Difference between revisions

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==Overview==
A series of triggered CF-252 runs are conducted at various detector PMT high voltages and discriminator thresholds. A TDC spectrum is acquired using daq2 so that  a neutron cut can be applied. These data provides us with a relationship between neutron detection rate and PMT HV/threshold.


==results==
{| border="1" style="border: 4px solid black; border-collapse: collapse; padding: 5px;vertical-align: middle; text-align: center "
|- style="text-align: center ;vertical-align: middle ;  border-bottom: 2px solid black;"
! Detector
! <math>n_{0}</math> rate
!noise
! run #
! PMT <br>threshold
! HV
|-
!D30
| ?
| ??
| rowspan="4" | r5242
| rowspan="4" | 25
| rowspan="16" | 1700
|-
!D90
| ?
| ??
|-
!D150
| ?
| ??
|- 
!D225
| ?
| ??
|-
!D30
| ?
| ??
| rowspan="4" | r5239
| rowspan="4" | 30
|-
!D90
| ?
| ??
|-
!D150
| ?
| ??
|-
!D225
| ?
| ??
|-
!D30
| ?
| ??
| rowspan="4" | r5240
| rowspan="4" | 35
|-
!D90
| ?
| ??
|-
!D150
| ?
| ??
|-
!D225
| ?
| ??
|-
!D30
| ?
| ??
| rowspan="4" | r5241
| rowspan="4" | 40
|-
!D90
| ?
| ??
|-
!D150
| ?
| ??
|- style=" border-bottom: 2px solid black;"
!D225
| ?
| ??
|-
<!--________1650__________________-->
|-
!D30
| ?
| ??
| rowspan="4" | r5243
| rowspan="4" | 25
| rowspan="16" | 1650
|-
!D90
| ?
| ??
|-
!D150
| ?
| ??
|- 
!D225
| ?
| ??
|-
!D30
| ?
| ??
| rowspan="4" | r5244
| rowspan="4" | 30
|-
!D90
| ?
| ??
|-
!D150
| ?
| ??
|-
!D225
| ?
| ??
|-
|-
!D30
| ?
| ??
| rowspan="4" | r5245
| rowspan="4" | 35
|-
!D90
| ?
| ??
|-
!D150
| ?
| ??
|-
!D225
| ?
| ??
|-
|-
!D30
| ?
| ??
| rowspan="4" | r5246
| rowspan="4" | 40
|-
!D90
| ?
| ??
|-
!D150
| ?
| ??
|- style=" border-bottom: 2px solid black;"
!D225
| ?
| ??
|-
<!--_____________1600_________-->
|-
!D30
| ?
| ??
| rowspan="4" | r5247
| rowspan="4" | 25
|rowspan="16"|1600
|-
!D90
| ?
| ??
|-
!D150
| ?
| ??
|-
!D225
| ?
| ??
|- 
|-
!D30
| ?
| ??
| rowspan="4" | r5248
| rowspan="4" | 30
|-
!D90
| ?
| ??
|-
!D150
| ?
| ??
|-
!D225
| ?
| ??
|- 
|-
!D30
| ?
| ??
| rowspan="4" | r5249
| rowspan="4" | 35
|-
!D90
| ?
| ??
|-
!D150
| ?
| ??
|-
!D225
| ?
| ??
|- 
|-
!D30
| ?
| ??
| rowspan="4" | r5250
| rowspan="4" | 40
|-
!D90
| ?
| ??
|-
!D150
| ?
| ??
|- style=" border-bottom: 2px solid black;"
!D225
| ?
| ??
|- 
|-
!D30
| ?
| ??
| rowspan="4" | r5251
| rowspan="4" | 25
|rowspan="16"| 1550
|-
!D90
| ?
| ??
|-
!D150
| ?
| ??
|-
!D225
| ?
| ??
|- 
|}

Latest revision as of 18:47, 17 October 2016