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    User name A. Deur

    Log entry time 00:15:35 on August21,2003

    Entry number 112298

    This entry is a followup to: 112220

    keyword=shift summary part 2

    20:35 Done with HRS setting change. Ask for the beam back
    20:37 Beam back. Start run 3816. Kinematics 10:15 bwhp in. target at 0 degree. empty ref cell run. Rate is 411 Hz.
    20:46 Stop run 3816: 258K events. Fill the ref cell with 140 psig of N2.
    20:49 start run 3817 changed rHRS prescaler to PS1=5 PS2=10
    20:54 Done with N2 run. Move to pol 3He cell.
    21:01 Ask for beam back
    coda start problem. run 3818 is junk and left-right arm are not synchronized anymore
    21:01 start runs 3819/23818 changed rHRS prescaler to PS1=1 PS2=2. bwhp in. target at 0 degree. Got a couple of longer RF trip during this run. 3.2M events
    21:23 stop run, insert beam 1/2 wave plate. Did bleedthru meas. see separate entry.
    21:32 Start run 3820/23819 bwhp out. Target at 0 degree. 3.2M events
    21:38 run done, start rotate target spin to 270 degree.
    21:45 Start run 3821/2381 bwhp out. Target at 270 degree. 2.5M events
    21:55 Stop run 3821. Done with kinematics 10.15. Called MCC to mask the target, put in the ref cell. target spin to 0 degree. Set the rHRS to 1.314 GeV/c, Iseptum is 164.5 (readback).
    22:18 Done with HRS setting change. Ask for the beam back (10 uA)
    22:21 Beam back. Start run 3822. Kinematics 10:15 bwhp out. target at 0 degree. Empty ref cell run. Rate is 490 Hz for 9.9 uA. We took 193K events
    22:26 Stop run3822. Fill ref cell with N2 (140 psig)
    22:28 Start run 3823 changed rHRS prescaler to PS1=5 PS2=8
    22:33 Done with N2 run. Move to pol 3He cell.
    22:39 ask for beam back.
    22:40 start run 3824. Kinematics 10:16 bwhp out. target at 0 degree. Rate with 10.0 uA is 4.8 uA. we took 3M events
    22:52 insert bhwp.
    22:53 start run 3825. bwhp in. target at 0 degree. We took 3.2 M
    23:07 Stop run 3825, move target spin to 270 degree.
    23:12 start run 3826. bwhp in. target at 270 degree. We took 2.9 M
    23:24 done with kinematics 10.16. We called MCC to mask the target, put in the ref cell. target spin to 0 degree. Set the rHRS to 1.218 GeV/c, Iseptum is 153.25 (readback).
    23:41 Done with HRS setting change. Ask for the beam back
    23:44 beam back, wait for rHRS dipole which undershoot.
    23:45 coda run start failed. run 3827-28 are junks.
    23:48 Start run 3829/23828. Kinematics 10:17 bwhp in. target at 0 degree. Empty ref cell run. We took 230K events
    23:54 stop run 3829 Fill ref cell with N2 (140 psig)
    23:56 Start run 3830/23829 changed rHRS prescaler to PS1=4 PS2=7
    00:01 stop run 3830 ask for beam down to go to 3He pol cell.
    00:11 Start run 3831