Difference between revisions of "Signal cable timing"
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! style="border: 1px solid black; border-bottom: 3px solid black; padding: 5px;vertical-align: middle" rowspan="2" | Variable index* | ! style="border: 1px solid black; border-bottom: 3px solid black; padding: 5px;vertical-align: middle" rowspan="2" | Variable index* | ||
! style="border: 1px solid black; border-bottom: 3px solid black; padding: 5px;vertical-align: middle" rowspan="2" | <math>\Delta t</math> relative to D30T001 [ns] | ! style="border: 1px solid black; border-bottom: 3px solid black; padding: 5px;vertical-align: middle" rowspan="2" | <math>\Delta t</math> relative to D30T001 [ns] | ||
| − | ! style="border: 1px solid black; border-bottom: 3px solid black; padding: 5px;vertical-align: middle" rowspan="2" | | + | ! style="border: 1px solid black; border-bottom: 3px solid black; padding: 5px;vertical-align: middle" rowspan="2" | bottom - top [ns] |
! style="border: 1px solid black; border-bottom: 3px solid black; padding: 5px;vertical-align: middle" rowspan="2" | Run # | ! style="border: 1px solid black; border-bottom: 3px solid black; padding: 5px;vertical-align: middle" rowspan="2" | Run # | ||
! style="border: 1px solid black; border-bottom: 3px solid black; padding: 5px;vertical-align: middle" rowspan="2" | Run time [sec] | ! style="border: 1px solid black; border-bottom: 3px solid black; padding: 5px;vertical-align: middle" rowspan="2" | Run time [sec] | ||
Revision as of 22:18, 17 August 2016
Procedure
PMT timing relative to D30T001 is measured by splitting a pulse from a pulse generator.
PMT top-bottom difference is the mean time difference of the PMT's using data from the TDC spectrum of a coincidence run with the CF-252 source. The source was placed in the center of all detectors and 150.5 cm above the floor. The trigger detector was located 5.5 cm below the very bottom of the source.
run info
Detectors D30(Red) and D90(yellow):
run #5214 t=1475 seconds
Results
| Detector | PMT | sig. cable | Variable index* | relative to D30T001 [ns] | bottom - top [ns] | Run # | Run time [sec] | |
|---|---|---|---|---|---|---|---|---|
| angle | color
| |||||||
| 30 | Red | Top | D30T001 | 1 | +0 (by definition) | +12.5 | r???? | ?? |
| Bot | D30B002 | 2 | +12.5 | |||||
| 90 | Yellow | Top | D90T003 | 3 | +1 | +10.5 | ||
| Bot | D90B004 | 4 | +11.5 | |||||
| 150 | Blue | Top | D150T005 | 1 | +1 | +13 | r5217 | ?? |
| Bot | D150B006 | 2 | +14 | |||||
| 225 | Wood | Top | D225T007 | 3 | -3 | +23 | ||
| Bot | D225B008 | 4 | +20 | |||||
* for ROOT, e.g. evt.TDC1190[1][i], where i is the variable index.
Trigger plugged into patch panel 223A15 : -8 ns