  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.
