A critical issue in the development of coherent X-ray sources as FEL and SR. facilities is the generation of high peak brilliance electron beams. Detailed simulations of such "dense " systems require self-interaction effects to be carefully accounted for in diverse dynamical conditions ranging from low energies where quasi-static space charge effects dominate, to the highly relativistic regimes of the kind encountered, e.g., in magnetic compressors, where acceleration fields prevail and retarded effects cannot be neglected. In principia prima Monte Carlo codes the electron beam is usually modelled as a collection of mutually interacting objects, whose number is bounded because of practical computer limitations. As a consequence suitable techniques must be devised to achieve stability and suppress numerical artifacts. In this paper a covariant approach to self-fields regularization is described, in the context of TREDI simulation code, a fully 3D Monte Carlo accounting for electron beam self-interaction by means of Lienard-Wiechert retarded potentials.
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Physics and Astronomy (miscellaneous)
Quattromini, M., & Glannessi, L. (2009). Covariant self-fields regularization in dense electron beams. Nuovo Cimento della Societa Italiana di Fisica C, 32(2), 169 - 172. https://doi.org/10.1393/ncc/i2009-10407-7