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https://doi.org/10.18429/JACoW-IPAC2014-TUPME060
Title Simulation Analysis on Micro-Bunched Density Modulation from a Slit-Masked Chicane
Authors
  • Y.-M. Shin, P. Piot, C.R. Prokop
    Northern Illinois University, DeKalb, Illinois, USA
  • D.R. Broemmelsiek, E.R. Harmspresenter, A.H. Lumpkin, J. Ruan, J.C.T. Thangaraj
    Fermilab, Batavia, Illinois, USA
Abstract Pre-bunching a beam at a resonance condition with an accelerating structure vastly improves performance of beam-driven accelerators and undulators since it enhances a beam-wave coupling. We plan to test a slit-mask micro-buncher at the chicane of Fermilab-ASTA 50 MeV beamline in the effort of advanced accelerator research. With the chicane design parameters (bending angle (alpha) of 18 degree, R56 ~ - 0.18 m, and bending radius of ~ 0.78 m), analytic model showed that a slit-mask with W (period) = 900 um and a (aperture width) = 300 um (30 % transparency) generates 100 um spaced micro-bunches with 5 ~ 6 % correlated energy spread. Two kinds of combined beamline simulation, CST-PS+Impact-Z and Elegant+Shower, including space charge and CSR effects, showed that a 900 um spaced, 300 um wide slits placed in the middle of chicane splits 20 pC – 1 nC bunches into ~ 100 um spaced micro-bunches. It is possible that a further optimization of mask design creates sub-100 fs micro-bunches, which is currently under development.
Footnotes & References *[1] NIM A 375, 597 (1996)
[2] PRL 101, 054801 (2008)
[3] Y.-E Sun, P. R. G. Piot, FEMILAB-CONF-08-408-APC
** ASTA: Advanced Superconducting Test Accelerator
Funding This work was supported by the DOE contract No. DEAC02-07CH11359 to the Fermi Research Alliance LLC.
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Conference IPAC2014, Dresden, Germany
Series International Particle Accelerator Conference (5th)
Proceedings Link to full IPAC2014 Proccedings
Session Poster Session, Messi Area
Date 17-Jun-14   16:00–18:00
Main Classification 03 Particle Sources and Alternative Acceleration Techniques
Sub Classification A16 Advanced Concepts
Keywords simulation, electron, bunching, acceleration, dipole
Publisher JACoW Publishing, Geneva, Switzerland
Editors Christine Petit-Jean-Genaz (CERN, Geneva, Switzerland); Gianluigi Arduini (CERN, Geneva, Switzerland); Peter Michel (HZDR, Dresden, Germany); Volker RW Schaa (GSI, Darmstadt, Germany)
ISBN 978-3-95450-132-8
Published July 2014
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Copyright © 2014 by JACoW, Geneva, Switzerland     CC-BY Creative Commons License
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