Signal cable timing

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PMT timing relative to D30T001 is measured by splitting a pulse from a pulse generator .


PMT difference is determined by a coincidence measurement with the CF-252 source. The source was placed in the center of all detectors and 150.5 cm from the floor. The trigger detector is located 5.5 cm below the very bottom of the source.

Detector PMT sig. cable [math]\Delta t[/math] 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