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User name D. Parno
Log entry time 00:05:52 on August24,2009
Entry number 285612
keyword=Swing Shift Summary 8/23
Shift leader: Diana Parno for KK
Shift worker: Jon Wexler
Began shift taking optics data on tantalum target, sieve in.
17:10 Moved to water target. Running at 5 uA because higher currents trip io n chambers.
17:35 Ion chambers tripping. MCC calls, they want to send us tune beam so th ey can adjust the steering. Moved target to empty.
17:45 MCC can't give us beam on water target anymore until ion chambers are checked out by RadCon. Switching to tantalum. Removing sieve.
18:45 An Arc3 magnet came down. Went to empty target for tune beam while MCC verified target, 7 uA, no raster.
19:07 10-minute down for dipole stack reset (Arc3 magnet restoration)
19:47 IOC settings have been doubled. Moving to water target.
20:05 Sieve back in place.
20:10 MCC takes away beam to work on shunt.
21:00 Beam is back. Moved to carbon target to confirm raster.
21:15 Beam down again.
21:40 Beam back. Starting water cell run.
22:00 Moved to carbon target for bull's eye scan.
22:59 HARP scan at (+2.5, +2.5) gave (x,y)=(180,190) on Harp 3A and (140,140) on Harp 3B
23:25 Called for controlled access for PREx detector work
23:35 ARM arrives. KK and Jon go into hall for escorted access.
L: 24489 16:08-16:40, 400/200k at 20uA on Tantalum, no raster
L: 24490 16:48-17:03, 100k at 20uA on Tantalum, 0.5x0.5 raster
L: 24491 17:21-17:36, 800k at 5uA on water, 0.5x0.5 raster
L: 24492 18:28-18:30, 380k at 20 uA on tantalum, no raster, sieve out. Bad -- rates t oo high
L: 24493 18:42-18:48, 400k at 7 uA on tantalum, no raster, sieve out..
L: 24494 19:26-19:28, 90k at 5uA on carbon, no raster, sieve out
L: 24495 19:28-19:31, 400k at 5uA on carbon, 0.5x0.5 raster, sieve out
L: 24496 19:32-19:35, 400k at 5uA on carbon, 2.5x2.5 raster, sieve out
L: 24497 19:39-19:42, 60k at 5uA on carbon, 0.5x0.5 raster, sieve out
L: 24498 19:52-19:58, 850k at 4 uA on water, 0.5x0.5 raster, sieve out
L: 24499 21:03-21:07, 120k at 7uA on carbon to confirm 0.5x0.5 raster. Sieve in.
L: 24500 21:41-21:51, 850k at 5uA on water with 0.5x0.5 raster, sieve in
L: 24501 22:18-, 100k at 20uA on carbon. Bull's eye scan: sieve in, bpmBx=-2.5, bpmBy =-2.5
L: 24502 22:27-22:29, junk -- beam off nearly entire run. Attempt at bull's eye scan point 2 (2.5, -2.5)
L: 24503 22:32-22:36, 100k at 5uA on carbon. Bull's eye scan: (2.5, -2.5)
L: 24504 22:43-46, 100k at 5uA on carbon. Bull's eye scan: (2.5, 2.5). Went to 20 uA toward end of run.
L: 24505 22:47-22:50, 100k at 20uA on carbon. Bull's eye scan: (2.5, 2.5)
L: 24506 23:03-23:05, 100k at 20uA on carbon. Bull's eye scan: (-2.5, 2.5)