Longitudinal dynamics in an FFAG accelerator under conditions of rapid acceleration and fixed, high RF

被引:0
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作者
Koscielniak, S [1 ]
Johnstone, C [1 ]
机构
[1] TRIUMF, Vancouver, BC V6T 2A3, Canada
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O412 [相对论、场论]; O572.2 [粒子物理学];
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摘要
A signature of fixed-field acceleration is that the orbit of the beam centroid unavoidably changes with energy. The corresponding change in pathlength results in phase slip relative to the fixed-frequency accelerating waveform. Nevertheless, depending on the location of the fixed-points of the motion, synchronous or asynchronous cross-crest acceleration is possible for a limited number of turns. The possibility of asynchronous rf can be understood simply by realizing that for acceleration in a single pass, the initial cavity phases can be set to exactly compensate for the phase slip. The present work explores the influence of the path-length fixed points and of rf manipulations on the longitudinal dynamics in FFAGs.
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页码:1831 / 1833
页数:3
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