Difference between revisions of "05/13/2011 coincidence test"
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| Line 14: | Line 14: | ||
! scope="col" width="50" | threshold, mV | ! scope="col" width="50" | threshold, mV | ||
|- | |- | ||
| − | !PS1 | + | !PS1 |
| − | |- | + | |<math>255977\pm505.9</math>||10 min |
| + | |- | ||
| + | !PS1 | ||
| + | |<math>421917\pm649.5</math>||10 min | ||
| + | |- | ||
| + | !PS1+PS2 | ||
| + | |<math>1224\pm34.9</math>||10 min | ||
|} | |} | ||
| − | |||
:▫ PS1 and PS2: -1000 V | :▫ PS1 and PS2: -1000 V | ||
Revision as of 21:08, 13 May 2011
Set up like that:
the distance between PS and n's PMT is abot 80 cm
The voltages and thresholds are as below. Note: I increased my thresholds for PS1 and PS2 from 80 mV up to 100 mV according to mu previous calibration threshold line.
| PMT voltage, V | threshold, mV | |
|---|---|---|
| PS1 | 10 min | |
| PS1 | 10 min | |
| PS1+PS2 | 10 min |
- ▫ PS1 and PS2: -1000 V
- ▫ n's: -1500 V
The thresholds are:
- ▫ PS1 and PS2: -80 mV
- ▫ n's: -200 mV
Let's do first the coincidence test PS1+PS2
| counts | time | counts/sec | |
|---|---|---|---|
| PS1 | |||
| PS2 | |||
| PS1+PS2 |