title: Centroid and envelope dynamics of high-intensity charged-particle beams in an external focusing lattice and oscillating wobbler.
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.
authors.affiliation: Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA.
authors.forename: Hong
authors.initials: H
authors.lastname: Qin
authors.forename: Ronald C
authors.initials: RC
authors.lastname: Davidson
authors.forename: B Grant
authors.initials: BG
authors.lastname: Logan