View source for Position/Timing resolution study with CO-60

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A CO-60 source was placed 2" from the center of a detector, which was shielded from cosmics by 4" of lead, except for right below the source, where there was small pin hole through the lead. Directly above the source lied a finger detector that was placed in coincidence with either PMT.  
PMT threshold: 40 mV

Finger Threshold: 30 mV


[[File:TimingResolution1.png|750px]]