Degradation of electron beam quality for a compact ‘laser-based’ FEL

0522648 - FZÚ 2020 RIV CH eng C - Conference Paper (international conference)
Molodozhentsev, Alexander - Kruchinin, Konstantin - Přibyl, Lukáš
Degradation of electron beam quality for a compact ‘laser-based’ FEL.
9th International Particle Accelerator Conference. Geneva: JACoW Publishing, 2018 - (Koscielniak, S.; Satogata, T.; Schaa, V.; Thomson, J.), s. 3029-3031. ISBN 978-3-95450-184-7.
[International Particle Accelerator Conference /9./. Vancouver (CA), 29.04.2018-04.05.2018]
R&D Projects: GA MŠMT EF16_019/0000789
Grant - others:OP VVV - ADONIS(XE) CZ.02.1.01/0.0/0.0/16_019/0000789
Institutional support: RVO:68378271
Keywords : electron * FEL * emittance * laser * space-charge
OECD category: Optics (including laser optics and quantum optics)

Laser wake field acceleration (LWFA) mechanism allows to produce extremely short electron bunches of a few fs length with the energy up to a few GeV in extremely compact geometries. This mechanism provides unique electron beam parameters, in particular, transverse beam emittance (order of 1 π mm mrad), extremely short bunch length (order of a few femtoseconds) and high beam charge (up to 100 pC). The novel acceleration method therefore opens a new way to develop compact “laser-based” FELs. In the frame of this report we discuss basic effects, which lead to degradation of an electron beam quality. The chromatic and collective effects have been analyzed for an electron beam line designed to transport the electrons from the ‘laser-driven’ source to a FEL undulator. In addition, the SASE FEL performance has been discussed in this report taking into consideration the degradation of the electron beam quality.
Permanent Link: http://hdl.handle.net/11104/0307111