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User name Bob / Dustin
Log entry time 21:37:44 on September23,2009
Entry number 291269
keyword=Qsq runs at 5 uA.Alex asks for higher current (5 uA).
We give him control of tuning, Runs 24831 / 4614.
Get 5 uA but this drifts up to 8 uA during the run.
MCC is tuning the beam for Compton. Of limited use for Qsq.
Start another run 24832 / 4615 while we wait.
At 21:22 -- Beam is now stable at 5 uA. BPMs look ok.
Fast-feedback is not working, but it should be ok.
Run 24833 / 4616 ... Qsq runs at 5 uA, but high deadtime.
The L-HRS has more deadtime than R-HRS.
Run 4617 taken also.
Alex is taking a long Compton run.
Decide to increase prescale factors.
Raw rates at 5 uA
L-HRS T1 = 31.8 kHz
L-HRS T2 = 30.0 kHz
R-HRS T1 = 31.6 kHz
R-HRS T2 = 35.3 kHz
Prescales were 4 (oops). Need to be 15.
Run 24834 / 4618 -- good low-deadtime runs at 5 uA.
Fig 1 and 2 -- prelim. Qsq at 5 uA.
FIGURE 1
FIGURE 2
