Speaker
Description
Nowadays the intensity of existing inverse Compton scattering (ICS) sources is far from what is desired by users due to a number of unsolved problems, one of which is the recoil effect. This effect is considered primarily in terms of its influence on characteristics of the generated radiation [1], whereas its impact on characteristics of an electron beam after interaction with a laser beam is usually neglected. This is due to the fact that in most existing ring accelerators, the short beam lifetime prevents electrons from interacting with the laser pulse multiple times.
New storage ring based ICS sources, however, are now being designed with the electron beam lifetimes expected to be long enough to collide with laser pulses multiple times. This repeated interaction leads to a considerable evolution of the electron beams’ characteristics.
In this contribution, we show enhancements to our previously developed Geant4 ISC code [2]. Based on the theoretical model we developed in [3], we have implemented new features to simulate a storage ring based ICS source with arbitrary collision and beam tilting angles and possibility to track the electron beams’ evolution over multiple collisions. We demonstrate that this evolution must be taken into account, as it critically affects the properties of the resulting radiation. These new capabilities make our code a valuable tool for designing the next generation of ultra-bright ICS sources.
[1] C. Curatolo, I. Drebot, V. Petrillo, L. Serafini, Analytical description of photon beam phase spaces in inverse Compton scattering sources, Phys. Rev. AB 20, 080701 (2017).
[2] A.A. Savchenko, A.A. Tishchenko, and D.Yu. Sergeeva, Geant4 for inverse Compton radiation source simulations, in Proc. 27th Russian Particle Accelerator Conf. (RuPAC-2021), TUPSB29, 286 (2021).
[3] A.P. Potylitsyn, D.V. Gavrilenko, M.N. Strikhanov, and A.A. Tishchenko, Crab crossing in inverse Compton scattering, Phys. Rev. Accel. Beams 26, 040701 (2023).