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    User name xiaohui

    Log entry time 06:14:23 on May27,2008

    Entry number 239858

    keyword=BB shower block K6 D-2

    BigBite shower hits pattern K6D-2
    Did several tests:
    1616 all SH on
    1617 17.3-19.3,16.4-20.4,16.5-18.5
    1618 reduce HV 19.3(was hot before) from 1300 to 1250
    1619 19.3 off, 19.5 on
    1620 19.5 off, 19.3 back on (1250)
    1621 19.3 1200V
    1622 19.3 1250V

    From the acceptance check, run 1622(1618) seems to be the optimal one, will keep running for production.
    Below is the hit pattern for run 1616 and 1618.



    FIGURE 1

    FIGURE 2