Results 31 to 40 of about 624,799 (321)
Short Rayleigh length free electron lasers
Physical Review Special Topics. Accelerators and Beams, 2006 Conventional free electron laser (FEL) oscillators minimize the optical mode volume around the electron beam in the undulator by making the resonator Rayleigh length about one third to one half of the undulator length.
W. B. Colson +6 more
doaj +1 more source
Numerical simulations of X-rays Free Electron Lasers (XFEL) [PDF]
, 2014 We study a nonlinear Schr\"odinger equation which arises as an effective single particle model in X-ray Free Electron Lasers (XFEL). This equation appears as a first-principles model for the beam-matter interactions that would take place in an XFEL ...
Antonelli, Paolo +3 more
core +2 more sources
An X-ray gas monitor for free-electron lasers
Journal of Synchrotron Radiation, 2019 Characterization of the absolute photon pulse energy and beam position of free-electron lasers (FELs) is essential for many user experiments, as well as for machine operators. Described here is an X-ray gas monitor which is a suitable tool for FEL photon
A. Sorokin +9 more
semanticscholar +1 more source
Laser assisted electron beam conditioning for free electron lasers
Physical Review Special Topics. Accelerators and Beams, 2005 A new method for electron beam conditioning in free electron lasers is proposed. It uses the electron beam interaction with a laser light in two wiggler magnets separated by a strong-focusing channel.
A. A. Zholents
doaj +1 more source
Analysis of Čerenkov free-electron lasers
Physical Review Special Topics. Accelerators and Beams, 2015 We present an analysis of a Čerenkov free-electron laser (FEL) driven by a flat electron beam. In this system, an electron beam traveling close to a dielectric slab placed at the top of an ideal conductor interacts with the copropagating electromagnetic ...
Yashvir Kalkal, Vinit Kumar
doaj +1 more source
Wavefront sensing at X-ray free-electron lasers
Journal of Synchrotron Radiation, 2019 Here a direct comparison is made between various X-ray wavefront sensing methods with application to optics alignment and focus characterization at X-ray free-electron lasers.
M. Seaberg +22 more
semanticscholar +1 more source
Harmonic lasing in x-ray free electron lasers
Physical Review Special Topics. Accelerators and Beams, 2012 Harmonic lasing in a free electron laser with a planar undulator (under the condition that the fundamental frequency is suppressed) might be a cheap and efficient way of extension of wavelength ranges of existing and planned x-ray free electron laser ...
E. A. Schneidmiller, M. V. Yurkov
doaj +1 more source
High-Power Femtosecond Soft X Rays from Fresh-Slice Multistage Free-Electron Lasers.
Physical Review Letters, 2018 We demonstrate a novel multistage amplification scheme for self-amplified spontaneous-emission free electron lasers for the production of few femtosecond pulses with very high power in the soft x-ray regime.
A. Lutman +8 more
semanticscholar +1 more source
High efficiency, multiterawatt x-ray free electron lasers
Physical Review Accelerators and Beams, 2016 In this paper we present undulator magnet tapering methods for obtaining high efficiency and multiterawatt peak powers in x-ray free electron lasers (XFELs), a key requirement for enabling 3D atomic resolution single molecule imaging and nonlinear x-ray ...
C. Emma, K. Fang, J. Wu, C. Pellegrini
doaj +1 more source
High-accuracy wavefront sensing for x-ray free electron lasers
Optica, 2018 Systematic understanding and real-time feedback capability for x-ray free electron laser (FEL) accelerator and optical components are critical for scientific experiments and instrument performance.
Yanwei Liu +14 more
semanticscholar +1 more source