Difference between revisions of "Signal cable timing"
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| Line 22: | Line 22: | ||
| D30T001 | | D30T001 | ||
| style=" text-align: right " | +0 (by definition) <!--Top delta t from D30T001--> | | style=" text-align: right " | +0 (by definition) <!--Top delta t from D30T001--> | ||
| − | | rowspan="2" | + | + | | rowspan="2" | +12.5 <!--Bottom minus top--> |
|- style=" border-bottom: 2px solid black" | |- style=" border-bottom: 2px solid black" | ||
| Bot | | Bot | ||
| D30B002 | | D30B002 | ||
| − | | + | + | | +12.5 <!--Bottom delta t from D30T001--> |
|- | |- | ||
Revision as of 21:45, 17 August 2016
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.
| Detector | PMT | sig. cable | relative to D30T001 [ns] | PMT bot - PMT top [ns] | |
|---|---|---|---|---|---|
| angle | color | ||||
| 30 | Red | Top | D30T001 | +0 (by definition) | +12.5 |
| Bot | D30B002 | +12.5 | |||
| 90 | Yellow | Top | D90T003 | +1 | +10 |
| Bot | D90B004 | +11 | |||
| 150 | Blue | Top | D150T005 | +1 | +13 |
| Bot | D150B006 | +14 | |||
| 225 | Wood | Top | D225T007 | -3 | +23 |
| Bot | D225B008 | +20 | |||
Trigger plugged into patch panel 223A15 : -8 ns