Log entry time 23:27:14 on April 19, 2012

Entry number 265585

This entry is a followup to: 265572

The run lasted about 50 minutes and the trigger scintillators (Wilbur and Templeton) triggered 60 times.  Figure 1 shows the adc spectrum.  The lead-glass detector (Zuckerman) triggered about 9000 times.  Figure 2 shows Zuckerman adc spectrum.

Most importantly, the timing does not seem to be too far appart.  Assuming 0.116ns per channel we have:

• Wilbur & Templeton (figure 6): 0.116*-150 ~-17ns
• Fern & Avery(figure 3): 0.116*-80 ~-9ns
• Zuckerman (figure 4&5): 0.116*-150 ~-17ns (self trigger figure 5) or 0.116*-60 ~7ns (scintillator trigger figure 6)

I don't understand the difference in trigger for Zuckerman but it is ~10 ns and the statistics are low.

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6