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User name Ulmer
Log entry time 15:54:54 on November 1,2001
Entry number 75573
keyword=11/1/01 Day Shift Summary
Continue Kinematics G+
08:00 Beam available only with empty target, as dump ion chambers trip on
waterfall target. EREA_Z spectrum did not show typical endcap + waterfall
peaks. Access to hall allowed rebooting the target lifter computer.
Position readout of waterfall now looks correct and the target position
was far enough off to perhaps put the bottom of the enclosure in the beam path. Rates and EREA_Z spectrum are now back to normal. It's still a mystery why the ion chamber rates steadily increased when the target lifter was not being activated.
10:35 Resume acquisition with Run 1418 (bad run - beam off center).
10:38 We notice two spots on 1H00B cross-hair view of "Beam Position onTarget".
MCC is investigating.
10:55 MCC is cleaning up some orbits. Beam expected in 10 minutes. IOC reboot
fixes "two-spot" problem.
11:05 Start first good acquisition this shift with Run 1419.
12:55 Run 1421 - efficiency check (all prescales set to zero)
15:00 Beam off to get ready for tour; smooth running from 11:05-15:00
Total Q to end of this shift for Kin G+ = 4161 uA-hrs