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https://doi.org/10.18429/JACoW-NAPAC2016-THPOA04
Title Maximum Brightness of Linac-Driven Electron Beams in the Presence of Collective Effects
Authors
  • S. Di Mitri
    Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
Abstract Linear accelerators capable of delivering high brightness electron beams are essential components of a number of research tools, such as free electron lasers (FELs) and elementary particle colliders. In these facilities the charge density is high enough to drive undesirable collective effects (wakefields) that may increase the beam emittance relative to the injection level, eventually degrading the nominal brightness. We formulate a limit on the final electron beam brightness, imposed by the interplay of geometric transverse wakefield in accelerating structures and coherent synchrotron radiation in energy dispersive regions*. Numerous experimental data of VUV and X-ray FEL drivers validate our model. This is then used to show that a normalized brightness of 10¹⁶ A/m², promised so far by ultra-low charge beams (1-10 pC), can in fact be reached with a 100 pC charge beam in the Italian FERMI FEL linac, with the existing machine configuration.**
Footnotes & References *Physical Review Special Topics - Accelerators And Beams 17, 110702 (2014)
**Physical Review Special Topics - Accelerators And Beams 16, 050701 (2013)
Paper download THPOA04.PDF [0.405 MB / 3 pages]
Poster download THPOA04_POSTER.PDF [0.828 MB]
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Conference NAPAC2016, Chicago, IL, USA
Series North American Particle Accelerator Conference (3rd)
Proceedings Link to full NAPAC2016 Proccedings
Session Poster Session (MC2 & MC5)
Date 13-Oct-16   08:30–12:30
Main Classification 5: Beam Dynamics and EM Fields
Sub Classification D06 - Coherent and Incoherent Instabilities - Measurements and Countermeasures
Keywords ion, brightness, linac, electron, emittance
Publisher JACoW, Geneva, Switzerland
Editors Volker RW Schaa (GSI, Darmstadt, Germany); Maria Power (ANL, Argonne, IL, USA); Vladimir Shiltsev (FNAL, Batavia, IL, USA); Marion White (ANL, Argonne, IL, USA)
ISBN 978-3-95450-180-9
Published January 2017
Copyright
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