Phys. Rev. ST Accel. Beams 5, 024202 (2002) [12 pages]Half-integer resonance crossing in high-intensity rings
A detailed study of the influence of space charge on the crossing of second-order resonances is presented and associated with the space-charge limit of high-intensity rings. Two-dimensional simulation studies are compared with envelope models, which agree in the finding of an increased intensity limit due to the coherent frequency shift. This result is also found for realistic bunched beams with multiturn injection painting. Characteristic features such as the influence of tune splitting, structure resonances, and the role of envelope instabilities are discussed in detail. The theoretical limits are found to be in good agreement with the performance of high-intensity proton machines. 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. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevSTAB.5.024202
DOI:
10.1103/PhysRevSTAB.5.024202
PACS:
29.27.Bd
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