User name Bob/Diana
Log entry time 02:30:39 on January29,2008
Entry number 227816
Followups:
keyword=accum1 noise small, changes made.Run 60270 in integration mode.
HV=2500. Beam = 80 uA.
The noise in accumulator #1 is 30 time smaller.
We have an integration time of 2.5 msec.
Another change we made, which appears to have mattered:
We adjusted DAC so that the samples have a pedestal
at 1983, see fig 2.
Fig 2 also motivated the cuts for accum3 and accum5.
FIGURE 1
FIGURE 2
