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    User name Jin

    Log entry time 05:36:45 on November 05, 2008

    Entry number 246817

    This entry is a followup to: 246795

    Followups:

    keyword=Might be able to further center spot

    After beam position adjustment by Yi Zhang and Alex, beam is lefted higher, and carbon hole is centered. However, now, the hole is on the left side of spot++, while beam spot on BeO is to the right (photo below).

    Compare : Before the beam position adjustment, carbon hole is on the right side of spot++ (entry 246795) and beam spot is on left side on BeO screen (entry 246776).

    Therefore I just guess it might be possible to ajust spot a little to the left on the BeO screen to further center the beam horizontally.




    Spot on BeO after run 2843



    Spot for run # 2843