Paper |
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WEPSM18 |
Investigation of Upstream Transient Wakefields due to Coherent Synchrotron Radiation in Bunch Compression Chicanes |
1085 |
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- C.E. Mitchell, J. Qiang
LBNL, Berkeley, California, USA
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The longitudinal wakefield due to coherent synchrotron radiation (CSR) in the bending magnets of bunch compression chicanes can significantly impact the beam quality in high-brightness FEL light-sources. In addition to single-bend CSR effects, transient radiation that is generated within a bend can follow the electron bunch downstream through one or more lattice elements before interacting with the bunch. An analytical 1-D model is used to estimate the size of these upstream wakefields in the absence of vacuum chamber shielding. An FFT-based, integrated Green function method for computing these wakefields is used in the code IMPACT to investigate their dynamical effects in the bunch compressor of a Next Generation Light Source.
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