PPPL-4511

Centroid and Envelope Dynamics of High-intensity Charged Particle Beams in an External Focusing Lattice and Oscillating Wobbler

Authors: Hong Qin, Ronald C. Davidson and B. Grant Logan

Abstract:
The centroid and envelope dynamics of a high-intensity charged particle beam are investigated as a beam smoothing technique to achieve uniform illumination over a suitably chosen region of the target for applications to ion-beam-driven high energy density physics and heavy ion fusion. The motion of the beam centroid projected onto the target follows a smooth pattern to achieve the desired illumination, for improved stability properties during the beam-target interaction. The centroid dynamics is controlled by an oscillating "wobbler", a set of electrically-biased plates driven by RF voltage.
__________________________________________________

Submitted to: Physical Review Letters (February 2010)

__________________________________________________

Download PPPL-4511 (pdf 536 KB 10 pp)
__________________________________________________