Date: Tue, 07 Sep 2004 09:53:24 -0500 From: Jim BirchallTo: Dave Mack Cc: Juliette Mammei , Roger Carlini , Klaus Grimm , armd@jlab.org, Neven Simicevic , Mark Pitt , Allena Opper , Greg Smith , Norman Morgan , Mike Finn , Yongguang Liang , Shelley Page , Tony Forest Subject: Re: Qweak working group - next meeting Dave, How about noise on the asymmetry measurement? How much ripple is allowable on the mini-torus field so that the noise is less than say 10% of counting statistics on Qw? A small change of deflection of elastic electrons could modulate the event rate nicely, especially at the small angle side of the acceptance where the cross-section slope is large. Jim