Difference between revisions of "Signal cable timing"
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PMT timing relative to D30T001 is measured by splitting a pulse from a pulse generator. | PMT timing relative to D30T001 is measured by splitting a pulse from a pulse generator. | ||
| − | PMT top-bottom difference is the mean time difference taken from the TDC | + | PMT top-bottom difference is the mean time difference of the PMT's, where the data is taken 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. |
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Revision as of 21:41, 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, where the data is taken 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) | +15 |
| Bot | D30B002 | +15 | |||
| 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