Title: NONLINEAR LATTICE FOR SPACE-CHARGE DOMINATED BEAM TRANSPORT WITH SUPPRESSED EMITTANCE GROWTH ∗
Abstract:We present a feasible design for the implementation of a beam emittance growth suppressing lattice for spacecharge dominated beams. It is based on a FODO focusing channel with quadrupole and duodecapo...We present a feasible design for the implementation of a beam emittance growth suppressing lattice for spacecharge dominated beams. It is based on a FODO focusing channel with quadrupole and duodecapole components which on average create the field required to match the high-brightness beam with the structure. Matched beam exhibits smaller emittance growth than that in regular quadrupole focusing channel. Numerical results demonstrate the ability of the proposed lattice to prevent halo formation of a nonuniform space-charge dominated beam. BACKGROUND ON MATCHING OF A NONUNIFORM SPACE-CHARGE DOMINATED BEAM Nonuniform space-charge dominated beams cannot be perfectly matched with a linear focusing channel resulting in emittance growth and halo formation, as shown in Figure 1. Ref. [1] deals with the transport of an intense, nonuniform beam with suppressed halo formation. In this work we present a practical structure for the implementation of the stabilizing fields for beam transport with reduced emittance growth.Read More
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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