CSR Microbunching in the Zeuthen-Workshop Benchmark Chicane

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CSR Microbunching in the Zeuthen-Workshop
Benchmark Chicane
Paul Emma Stanford Linear Accelerator Center July
2, 2002
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Chicane CSR Test-Case
Use line-charge CSR ? ? ? transient model
described in LCLS-TN-01-12 (Stupakov/Emma, Dec.
2001) same now used in Elegant based
on TESLA-FEL-96-14 (Saldin et al., Nov. 1996)
(T566 included, no ISR added)
incoherent synchrotron radiation
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Modulate current and energy profiles
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Vary slice emittance and energy spread
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Berlin-Benchmark 5-GeV Gain Curve
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LCLS BC2 CSR Microbunching Gain vs. l
Initial modulation wavelength prior to compressor
theory S. Heifets et al., SLAC-PUB-9165,
March 2002
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Z. Huang LCLS DL1/BC1/BC2/DL2
SC wiggler OFF
SC wiggler ON