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    User name J. Niedziela

    Log entry time 08:03:00 on July27,2003

    Entry number 107323

    keyword=Summary - owl shift target info.

    Target summary:

    Shift Start:
    holding field: 0 degrees
    HWP: out
    lasers: 4,6,7 on
    Target: Pol 3He

    1:20 - Moved target to pick up coils position for NMR/EPR
    1:28 - NMR measurement: 42.8%
    1:30 - EPR measurement: 40.7%

    1:32 - 1:44: Target to Pol3He w/270 degree holding field

    1:32-1:34 - Lasers 4, 6, 7 off
    1:36-1:40 - Holding field rotated to 270 from 0
    1:40 - Target moved to Pol 3He position
    1:41-1:43 - Lasers 1, 2, 3 on.

    2:30 - 2:50: Target to empty reference cell
    2:30-2:32 - Lasers 1,2,3 off
    2:38 - Holding field rotation complete (now at 0 degrees)
    2:42 - move to (empty) ref cell complete
    2:42-2:44 - Lasers 4,5,7 on
    2:50 - realized error in turning on laser 5. It was turnedoff and laser 6 was turned on.

    3:27 - Filled reference cell with N2.

    3:45 - Vented N2 reference cell.

    3:46 - Moved target to Pol. 3He position/0 degree holding field.

    5:52 - Rotation of holding field process begins.
    5:52-5:54 - Lasers 4, 6, 7 off.
    5:55 - Begin rotation of field from 0 to 270 degrees
    5:59 - Rotation complete.
    5:59-6:01 - Lasers 1,2,3 on.

    6:34 - Rotation of holding field process begins.
    6:34-6:36 - Lasers 1,2,3 off.
    6:37 - Begin rotation of holding field from 270 to 0 degrees.
    6:40 - Rotation complete.
    6:41-6:43 - Lasers 4,6,7 on.

    6:38 - Move target to pickup coils for NMR measurement.

    6:50 - NMR Measurement (waited for temperature stabilization). Measurement was performed with the septum magnet current at 230.75A.

    6:55 - Polarization analysis: NMR Polarization = 41.39%

    7:00 - moved target to (empty) reference cell position.

    7:10 - noticed that temperature readings of RTD 4 had dropped ~40 degrees. See HALOG entry 107310.

    7:28 - Filled ref cell with N2 (140 psig). (Reference cell read 143 psig when beam was on.)

    7:43 - Evacuated reference cell.

    7:45 - Moved target to pol. 3He position.



    Shift End:
    Target: Priapus
    Lasers: 4, 6, 7
    Field direction: 0
    Target HWP: out
    Target: pol 3He
    Recent NMR: 41.39 %
    Recent EPR: 40.7%