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User name Seonho Choi
Log entry time 15:33:22 on June23,2001
Entry number 64283
This entry is a followup to: 64277
keyword=Fast Feedback Off
MCC reports problem with fast feedback on. With FFB on, the beam wanders around in space and they are unable to fix the problem. For the moment (probably during the weekend), the FFB will be off. Experts are due back by tonight, and it might be possible to fix it tomorrow. One side effect is "huge counting rates in the compton photon detector", since the beam may be not completely centered when passing Compton Chicane. We have no choice but to keep an eye on the beam position.