Difference between revisions of "Threshold & HV study"
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==Overview== | ==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. | 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. | ||
| + | |||
| + | ==Setup== | ||
| + | A CF-252 source and trigger scintillation is placed at the geometric center of the neutron detector array. | ||
==results== | ==results== | ||
Revision as of 21:55, 19 August 2016
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.
Setup
A CF-252 source and trigger scintillation is placed at the geometric center of the neutron detector array.
results
| Detector | rate | noise | run # | PMT threshold |
HV |
|---|---|---|---|---|---|
| D30 | ? | ?? | r5242 | 25 | 1700 |
| D90 | ? | ?? | |||
| D150 | ? | ?? | |||
| D225 | ? | ?? | |||
| D30 | ? | ?? | r5239 | 30 | |
| D90 | ? | ?? | |||
| D150 | ? | ?? | |||
| D225 | ? | ?? | |||
| D30 | ? | ?? | r5240 | 35 | |
| D90 | ? | ?? | |||
| D150 | ? | ?? | |||
| D225 | ? | ?? | |||
| D30 | ? | ?? | r5241 | 40 | |
| D90 | ? | ?? | |||
| D150 | ? | ?? | |||
| D225 | ? | ?? | |||
| D30 | ? | ?? | r5243 | 25 | 1650 |
| D90 | ? | ?? | |||
| D150 | ? | ?? | |||
| D225 | ? | ?? | |||
| D30 | ? | ?? | r5244 | 30 | |
| D90 | ? | ?? | |||
| D150 | ? | ?? | |||
| D225 | ? | ?? | |||
| D30 | ? | ?? | r5245 | 35 | |
| D90 | ? | ?? | |||
| D150 | ? | ?? | |||
| D225 | ? | ?? | |||
| D30 | ? | ?? | r5246 | 40 | |
| D90 | ? | ?? | |||
| D150 | ? | ?? | |||
| D225 | ? | ?? | |||
| D30 | ? | ?? | r5247 | 25 | 1600 |
| D90 | ? | ?? | |||
| D150 | ? | ?? | |||
| D225 | ? | ?? | |||
| D30 | ? | ?? | r5248 | 30 | |
| D90 | ? | ?? | |||
| D150 | ? | ?? | |||
| D225 | ? | ?? | |||
| D30 | ? | ?? | r5249 | 35 | |
| D90 | ? | ?? | |||
| D150 | ? | ?? | |||
| D225 | ? | ?? | |||
| D30 | ? | ?? | r5250 | 40 | |
| D90 | ? | ?? | |||
| D150 | ? | ?? | |||
| D225 | ? | ?? | |||
| D30 | ? | ?? | r5251 | 25 | 1550 |
| D90 | ? | ?? | |||
| D150 | ? | ?? | |||
| D225 | ? | ?? | |||
| D30 | ? | ?? | r5252 | 30 | |
| D90 | ? | ?? | |||
| D150 | ? | ?? | |||
| D225 | ? | ?? |