Difference between revisions of "Signal cable timing"
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| Line 45: | Line 45: | ||
| Top | | Top | ||
| D90T003 | | D90T003 | ||
| + | |3 | ||
| +1 <!--Top delta t from D30T001--> | | +1 <!--Top delta t from D30T001--> | ||
| rowspan="2" | +10.5 <!--Bottom minus top--> | | rowspan="2" | +10.5 <!--Bottom minus top--> | ||
| Line 51: | Line 52: | ||
| Bot | | Bot | ||
| D90B004 | | D90B004 | ||
| + | |4 | ||
| +11.5 <!--Bottom delta t from D30T001--> | | +11.5 <!--Bottom delta t from D30T001--> | ||
Revision as of 22:12, 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] | PMT bot - PMT top [ns] | Run # | |
|---|---|---|---|---|---|---|---|
| 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 | +13 | r5217 | |
| Bot | D150B006 | +14 | |||||
| 225 | Wood | Top | D225T007 | -3 | +23 | ||
| Bot | D225B008 | +20 | |||||
Trigger plugged into patch panel 223A15 : -8 ns