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    User name pzhu

    Log entry time 06:25:24 on March13,2012

    Entry number 366174

    keyword=beam position change

    as we found that the beam position is not in the center position, we asked mcc to change the beam position.
    mcc fail to change the beam position with raster, so we move the target to c12-hole empty target and turn off the slow raster and fast raster, and increase the beam current to 100nA. we moved the beam position to the center position. but seams it hits the ion chamber.
    as we found we have no time to do the production run, we move the target to carbon without the raster to take the carbon run


    FIGURE 1