Phys. Rev. ST Accel. Beams 12, 064201 (2009) [5 pages]Experimental and numerical study of phase mixing of an intense beam
We study, experimentally and numerically, the relaxation of an initially nonuniform intense beam in an alternating-gradient transport line. A nonlinear distribution consisting of five interacting beamlets is created and tracked for longer than seven plasma periods with the help of tomographic phase-space mapping. Emittance growth is initially rapid, but slows down as the nonuniform distribution homogenizes in a few plasma periods. Both growth rates are found to depend on the beam current. This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevSTAB.12.064201
DOI:
10.1103/PhysRevSTAB.12.064201
PACS:
29.27.−a, 52.59.Sa, 52.40.Mj, 52.35.−g
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