Commissioning of KEKB bunch feedback systems

Abstract
Commissioning of KEKB started at the end of the lastyear. In the early stages of the commissioning, we observedtransverse instabilities in both rings and started tuning of thebunch feedback systems. Even though the tuning is now atthe initial stage, the feedback systems are contributing toan increase of the maximum storable currents in the KEKBrings. Feedback-related systems, tune meters and bunchcurrentmonitors, are also working well.

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