User name Moffit
Log entry time 00:25:01 on August20,2003
Entry number 111945
keyword=Charge Asymmetry Feedback Revived
There has been no charge asymmetry feedback since beam has returned. I managed to revive it, starting with RHRS run number 3759.
Analysis of the Happex runs, while feedback was not working, shows that the charge asymmetry mean was never more than about -300ppm (0.03%). Not so big.
With feedback revived, charge asymmetry is now nicely centered about 0 ppm. See Figure 1 (from Happex run #3936.. with feedback turned on again)... Charge asymmetry (ppm) vs Event Number (1 event ~ 33ms).