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    User name X. Zheng

    Log entry time 19:27:06 on June16,2007

    Entry number 205662

    Followups:

    keyword=high deadtime

    We are trying to set the correct beam/raster size using 30uA on Carbon hole. Only T1 and T3's are used (others are PS'd away). But although T1 and T3 are only ~20Hz, the deadtime is ~17%. At first we thought it is related to the dead left detector IOC (including the trigger supervisor). But now IOCs are fixed and the deadtime is still high (~10%). We tried kcoda but doesn't work. Also there is no error message showing up at all.