At start we're on kinematics H
Plan is to have a pass change to 2-pass starting at
08:45
runs 07:51 4796 Al target 07:52 20871 Al target 08:17 4797 Al target 08:42 4798 Al target (short run)
08:45 Beam is gone for pass change. So, we wait.
Kinematics N
10:00 Left HRS set to 2.323 GeV/c (Quads cycled) 11:11 MCC is finished. We go to contolled access to
move spectrometers and refill He bags. BigBite HV and magnet off. 12:30 Out of access asked for 5 microAmps no raster BigBite current restored and HV reset Right arm set to 0.564 GeV/c (quads cycled)
12:48 4799 Ta target Calibration
13:12 MCC takes beam away to reboot an IOC for Hall C 13:23 4800 C elastic deadtime > 50% 13:24 20872 reduced beam from 2.5 to 1.5 deadtime still >50% ? 13:34 4801 C elastic deadtime still 53%
changed Left arm to 2.18 GeV/c changed to LH2 target
13:58 20873 13:57 4802 H2 elastic
change Left to 2.045 GeV/c 14:13 MCC having RF problems. Experts being consulted.
15:38 Beam is back
15:40 4803 LH2 production (prescales need adjusting) 15:41 20874
15:47 4804 LH2 production (3 microAmps) (7% deadtime)
Probably want to try more current