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    User name The Target Crew

    Log entry time 22:47:14 on June19,2001

    Entry number 63811

    keyword=Target: Addition of transverse gradient, EPR

    After discussion with JP (Xiaochao), decided to continue pumping in long. mode after last EPR/NMR measurements.

    - rotated field to 0 degrees
    - turned on lasers #4,6,7

    Tried to estimate the size of the transverse gradient needed. EEL lab had
    larger transverse than longitudinal gradient (7 A, 20 turns, 19 degrees ->
    6.6A*20 turns in transverse direction).

    Wolfgang talked to JP again and we agreed to start with the
    following configuration:

    - tranverse gradient coil: 4.0 A
    - longitudinal gradient coil: -3.0 A (reverse)

    First EPR measurment with laser #6 on:
    0 order fit:
    1st flip: P = 37.4 +/- 1.9%
    2nd flip: P = 36.5 +/- 1.8%


    Program for the next hours:
    use only one method to measure polarization (EPR), if no change
    after first EPR measurement, do EPR every 4 hours (twice, i.e.
    keep this configuration for 8 hours (at least)).
    If large polarization loss in 4 hours, try to recover polarization (either
    long. grad. coil at 5.00A or, if losses are really large, go back to
    transverse mode.)