2024/02/07 by Victor Smaluk, Smaluk, Victor, Timur Shaftan +1
Engineering · Physics and Astronomy · #Accelerator Physics (physics.acc-ph) #Advanced X-ray Imaging Techniques #FOS: Physical sciences #Particle Accelerators and Free-Electron Lasers #Photocathodes and Microchannel Plates
paper · pdf · doi:10.48550/arxiv.2402.05204
openalex publication_date 2024/02/07 · openalex created_date 2024/02/10 · openalex updated_date 2026/07/30
For synchrotron light sources, the brightness of user X-ray beams is primarily determined by the electron beam emittance and energy spread at operational intensity. A common feature of fourth-generation synchrotrons is the short length of electron bunches combined with a very small transverse beam size. Consequently, the particle density is much higher than in machines of previous generations, leading to strong collective effects that significantly increase the emittance and limit the achievable brightness at operational beam intensity. In this article, we summarize our studies of the emittance scaled with the beam energy and intensity, taking into account the effects of intrabeam scattering, beam-impedance interaction, and bunch lengthening provided by higher-harmonic RF systems, to identify optimal combinations of machine and beam parameters.