| Paper |
Title |
Page |
| MPPE068 |
Effects on Flat-Beam Generation from Space-Charge Force and Beamline Errors
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3774 |
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- Y.-E. S. Sun
University of Chicago, Chicago, Illinois
- K.-J. Kim
ANL, Argonne, Illinois
- P. Piot
Fermilab, Batavia, Illinois
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The transformation of a round, angular-momentum-dominated electron beam into a flat beam using a skew-quadrupole channel has been developed theoretically in several papers and demonstrated experimentally at the Fermilab/NICADD Photoinjector Laboratory. In this paper, we address the impacts of space-charge force and beamline errors on the round-to-flat beam transformation. We discuss the physical process of angular momentum cancellation during the beam passage through the skew-quadrupole channel, present analytical and numerical studies of the linear and nonlinear space-charge forces, and evaluate the corresponding limits on the ratio of vertical-to-horizontal emittances. We also investigate the sensitivities of flat-beam emittances on several systematic factors such as errors on quadrupole strengths and alignments.
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