Log entry time 08:08:39 on April 17, 2012

Entry number 375851

Shift Worker:
Chao Gu(SL), Jie Liu(TO), Yoomin Oh(3rd)

00:00 Shift start with production at 0.5720GeV momentum setting.
01:50 Finished production at 0.5720GeV, start to take dilution data.
02:20 Finished dilution runs at 0.5720GeV. Start to cycle Q2,Q3 on both arms.
02:30 LHRS settled at 1.5895GeV, and start to take data on this setting.
03:00 Set LHRS to 1.4942GeV, and start to take 2 runs with 1M events.
03:15 Set LHRS to 1.3203GeV and take data.
03:30 Set LHRS to 1.0308GeV and take data.
03:50 Cycled Q2,Q3 on LHRS and set it to 1.4045GeV. Start to take some
data at this setting.
04:15 RHRS settled at 1.4942GeV, start to take data on this setting
04:20 Cycled Q2, Q3 on LHRS and set it to 1.4942GeV
04:40 Finished taking data at 1.4942GeV. Cycle Q2, Q3 for RHRS.
04:45 Set LHRS to 1.4045GeV and start to take some data
05:30 LHRS dipole current suddenly drop to 0. We called RC and
teck-on-call. Follow their instruction, we reset the dipole's power
supply. The left dipole came back at ~6:00
06:05 Set both left and right arm to 1.691GeV
06:25 Start to take dilution data at 1.691GeV setting
06:50 Production finished. Start optics
07:00 Escorted access to move the sieve slit IN
07:25 Beam is back. Continue with optics.
08:00 Shift ends. We will stop optics datan taking at 8:15~8:30

Production run# at 0.5720GeV
4551/23498/41396
4552/23499/41397
4553/23500/41398
4554/23501/41399
4555/23502/41400

Dilution run# at 0.5720GeV
Empty:  4556/23503
Carbon: 4558/23504
Dummy:  4559/23505

LHRS deadtime study run#
1.5895GeV     4561/4562
1.4942GeV     4563/4564
1.3203GeV     4565/4566
1.0308GeV     4567/4568

LHRS run# at 1.4045GeV
4569
4571
4572

run# at 1.4942GeV
4570/23506

run# at 1.691GeV
NH3:    4574/23509
Empty:  4575/23510
Dummy:  4576/23511
Carbon: 4577/23512

Optics run#
C12, fast raster only, sieve OUT:   4578/23513
C12, no raster, sieve IN:           4579/23514
C12, fast raster only, sieve IN:    4580/23515
C12, both raster on, sieve IN:      4581/23516
NH3, minimal raster size, sieve IN: 4582/23517