User name R. Michaels
Log entry time 13:21:18 on May29,2008
Entry number 240271
keyword=cavity test, part III.
Run 21041 with I_beam = 9.5 uA and (x,y) = (+2, +2).
Musson is trimming some phases.
The beam is tripping off a lot.
This time the analyzer worked and I could check data quality.
Moving to x,y = (-2, +2).
Run 21042 -- analyzer crashing again. bummer.
Rates here (for I_beam = 9.6 uA) are
T1 = 12.7 Hz
T3 = 460 Hz
T4 = 3450 Hz
Next, reduce beam current to 1 uA. Leave (x,y) = (-2,+2).
Run 21043. Miracle: it analyzes.
T1 = 12.5 Hz ... as if it's off ?
T3 = 60 uA ... I guess this is the most reliable.
T4 = 1430 Hz
(Idea was to use a trigger to monitor low-I, but this seems
problematic since T3 is low -- HRS at big angle -- and T1 is out
to lunch, and T4 is S1.or.S2 hence noisy)
Run 21044. Same I = 1uA, and now (x,y) = (+2, +2).
Run 21045, Same I = 1uA, now (x,y) = (-2,-2).