Sep 24 – 30, 2017
La Biodola, Isola d'Elba
Europe/Rome timezone

Chirp Mitigation of Plasma-Accelerated Beams by a Modulated Plasma Density

Sep 25, 2017, 6:40 PM
SB1, Sala Bonaparte 1, HH

SB1, Sala Bonaparte 1, HH

talk WG5 - High-Gradient Plasma Structures/Advanced Beam Diagnostics WG5_Parallel


Mr Manuel Kirchen (University of Hamburg)


Plasma-based accelerators offer the possibility to drive future compact light sources and high-energy physics applications. Achieving good beam quality, especially a small beam energy spread, is still one of the major challenges. Here, we propose to use a periodically modulated plasma density to actively shape the longitudinal fields acting on an electron bunch in the linear wakefield regime. We show, that we can generate an on-average flat accelerating field that suppresses the energy chirp evolution and thus maintains a small beam energy spread. The general concept of a modulated plasma density offers further advantages that we will discuss.

Primary author

Andreas Maier (CFEL/UHH)


Dr Alberto Martinez de la Ossa (DESY) Dr Bernhard Schmidt (DESY) Dr Christopher Behrens (DESY) Ms Irene Dornmair (University of Hamburg) Dr Jens Osterhoff (Deutsches Elektronen-Synchrotron DESY) Dr Julia Grebenyuk (DESY) Dr Klaus Floettmann (DESY) Mr Manuel Kirchen (University of Hamburg) Dr Matthias Gross (DESY) Mr Niels Delbos (University of Hamburg / Center for Free Electron Laser Science) Dr Ralph Assmann (DESY) Dr Reinhard Brinkmann (DESY) Mr Soeren Jalas (Center for Free-Electron Laser Science and Department of Physics, University of Hamburg) Dr Timon Mehrling (Deutsches Elektronen-Synchrotron DESY) Ms Violetta Wacker (DESY)

Presentation materials

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