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    User name Z. Chai

    Log entry time 02:29:55 on June17,2001

    Entry number 63470

    Followups:

    keyword=Charge Asymmetry feedback control

    It was found that the charge asymmetry for run 20605 was 340 and the charge feedback setting was around 100. Set the feedback to 340 and the charge asymmetry
    for run 20606 was -360. Seems the feedback control was not working well.
    Called Nilanga and he suggested we try to use half of the last run's charge asy
    in the feedback control. Set the feedback control to -170. Run 20607: Charge Asy 80.
    Keep watching for the charge asymmetry change and the feedback control setting.

    
Run#   	Charge Asymmetry(ppm)  	FeedbackSetting
    
20605	340			~100
    
20606	-360			340
    
20607	81			-170
    
20608	-220			40
    
20609   100   	                -110