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Published byKendall Edginton Modified about 1 year ago

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Numerical Simulation of CSR induced Instabilities T. Limberg, P. Piot Zeuthen, CSR Workshop 2002

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Flat Top Bunch Shape for Modulation Enhancement Studies Make bunches with flat tops 20 modulation lengths wide Soften the tail drop-off to prevent edge-effects affect the middle plateau Use 1500 –2500 sub-bunches to achieve a smoothly modulated profile Current at flat top is 6kA Run bunch at 5 GeV without compression through the benchmark chicane

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Charge Modulation on Flat Top

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TraFiC4 Calculations with initial Modulation 10 um sinusoidal modulation 200 um flat top with 6000 A current

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TraFiC4 Calculations with initial Modulation 4 um sinusoidal modulation 80 um flat top with 6000 A current

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Modulation Increase along the Chicane

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T4P2T4P2

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T 4 P 2 showing longitudinal wake and distribution

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T 4 P 2 showing longitudinal wake and distribution after zooming in

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