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    User name Makis P

    Log entry time 00:05:12 on March22,2007

    Entry number 196868

    keyword=Shift Summary

    Shift goal was to put 1.9 C on Pb3 at kinematics 10.

    Restored beam shape and raster parameters to have beam
    wider in vertical be keeping area the same (see separate
    entry). Beam now is 4x5mm^2 (raster 7.3/6.4)

    Put Pb3 target in, after checking with C target

    1789-1792 Runs are C test runs with different raster
    parameters.

    Following table is run#, start time, current, charge, cum/tive charge

    Started with ~3.5x10-5 beam spread, spread grew to 4.5x10-5
    when current increased to 40uA

    1793, 17:00, 10uA, 0.007 C, 0.061 C (cum Q)
    1794, 17:12, 20uA, 0.016 C, 0.077
    1795, 17:26, 30uA, 0.019 C, 0.096
    1796, 17:38, 40uA, 0.015 C, 0.110 (for I=40uA: DE/E=4.5x10-5)
    1797, 17:48, 30uA, 0.012 C, 0.122
    1798, 17:56, 40uA, 0.032 C, 0.154 (from here on DE/E < or = 4.5x10-5)
    1799, 18:11, 40uA, 0.032 C, 0.186
    1800, 18:26, 40uA, 0.020 C, 0.206
    1801, 18:39, 40uA, 0.032 C, 0.238
    Prescale factor change to make runs longer (per Konrad's suggestion)
    1802, 18:54, 40uA, 0.060 C, 0.298
    1803, 19:22, 40uA, 0.060 C, 0.358
    1804, 19:49, 40uA, 0.060 C, 0.418
    1805, 20:19, 40uA, 0.060 C, 0.478
    1806, 20:47, 40uA, 0.060 C, 0.538
    1807, 21:18, 40uA, 0.060 C, 0.598
    1808, 21:47, 40uA, 0.060 C, 0.658
    1809, 22:16, 40uA, 0.035 C, 0.693 TOTAL CHARGE on Pb so far kin 10
    Beam off for ~15mins (estimate) to power cycle machine racks.
    MCC update: looks like an hour not 15 mins!
    No beam till end of shift, put target in EMPTY position