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18 April 2021 Temporal diagnostics of the electron and photon beams at a free-electron laser with a corrugated passive structure
Alexander Malyzhenkov, Philipp Dijkstal, Paolo Craievich, Eugenio Ferrari, Sven Reiche, Thomas Schietinger, Pavle Juranic, Eduard Prat Costa
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Proceedings Volume 11776, EUV and X-ray Optics, Sources, and Instrumentation; 117760O (2021) https://doi.org/10.1117/12.2589116
Event: SPIE Optics + Optoelectronics, 2021, Online Only
Abstract
Temporal diagnostics are essential to characterize and optimize the performance of free-electron lasers (FELs). We propose and demonstrate a new method to measure the temporal profile of electron and photon beams in FEL facilities. The approach utilizes the transverse wakefields generated by the electrons traveling through a corrugated structure installed after an undulator section of an FEL. Compared to the more standard radio-frequency deflector approach, the method is more cost-effective, less sensitive to arrival time jitter, but reconstruction of the beam profiles becomes more complicated. We present numerical and experimental results that demonstrate the feasibility of the method. The experiments were carried out at SwissFEL, the x-ray FEL facility at the Paul Scherrer Institute in Switzerland.
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Alexander Malyzhenkov, Philipp Dijkstal, Paolo Craievich, Eugenio Ferrari, Sven Reiche, Thomas Schietinger, Pavle Juranic, and Eduard Prat Costa "Temporal diagnostics of the electron and photon beams at a free-electron laser with a corrugated passive structure", Proc. SPIE 11776, EUV and X-ray Optics, Sources, and Instrumentation, 117760O (18 April 2021); https://doi.org/10.1117/12.2589116
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KEYWORDS
Free electron lasers
Diagnostics
X-rays
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