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    User name Jin Huang

    Log entry time 22:18:55 on July 8,2010

    Entry number 330902

    keyword=What's hit in run 1888

    Spot++ show a corner of raster hit something other than C foils. By replaying for vertex. It appears we are hitting foil holder of +7.5cm carbon foil holder. The holder was melted during PREX and its carbon foil was gone. The melted piece flow down making edge of this very holder lower than others. See halog 329269 for the picture.

    Run 1889 looks clean

    FIGURE 1

    FIGURE 2