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Journal Article

Bunch decompression for laser-plasma driven free-electron laser demonstration schemes

MPS-Authors
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Dornmair,  Irene
International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Department für Physik, Ludwig-Maximilians-Universität, 85748 Garching, Germany;

External Resource

http://dx.doi.org/10.1103/PhysRevSTAB.16.070703
(Publisher version)

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Fulltext (public)

PhysRevSTAB.16.070703.pdf
(Publisher version), 467KB

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Citation

Seggebrock, T., Maier, A. R., Dornmair, I., & Grüner, F. (2013). Bunch decompression for laser-plasma driven free-electron laser demonstration schemes. Physical Review Accelerators and Beams, 16(7): 070703. doi:10.1103/PhysRevSTAB.16.070703.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002B-2503-B
Abstract
X-ray free-electron lasers (FELs) require a very high electron beam quality in terms of emittance and energy spread. Since 2004 high quality electrons produced by laser-wakefield accelerators have been demonstrated, but the electron quality up to now did not allow the operation of a compact x-ray FEL using these electrons. Maier et al. [Phys. Rev. X 2, 031019 (2012)] suggested a concept for a proof-of-principle experiment allowing FEL operation in the vacuum ultraviolet range based on an optimized undulator and bunch decompression using electron bunches from a laser-plasma accelerator as currently available. In this paper we discuss in more detail how a chicane can be used as a bunch stretcher instead of a bunch compressor to allow the operation of a laser-wakefield accelerator driven FEL using currently available electrons. A scaling characterizing the impact of bunch decompression on the gain length is derived and the feasibility of the concept is tested numerically in a demanding scenario.