Bucket shaking stops bunch dancing in Tevatron

TL;DR

The paper demonstrates that small bucket shaking effectively stabilizes longitudinal oscillations in Tevatron bunches, providing an alternative to damping systems.

Contribution

It provides experimental evidence that bucket shaking can suppress bunch dancing, confirming a recent theoretical prediction.

Findings

Bucket shaking stops bunch dancing in Tevatron.

Experimental validation of theoretical stabilization method.

Potential alternative to damping systems for beam stability.

Abstract

Bunches in Tevatron are known to be longitudinally unstable: their collective oscillations, also called "dancing bunches," persist without any signs of decay. Typically, a damper is used to stop these oscillations, but recently, it was theoretically predicted that the oscillations can be stabilized by means of small bucket shaking. Dedicated measurements in Tevatron have shown that this method does stop the dancing.