CSR Space charge Touschek IBS: shorter bunch length lead to stronger increase in epread -> gets more important for short pulses like in flashRT (for longitudinal description see s41598-021-87041-0_matrix_model_for_collective_phenomena_in_ebeams_long_phasespace.pdf eq.30 micro-bunching übergangsstrahlung, bremsstrahlung? TODO: summarize which effects could be relevant, then see which are considered at the moment for medical linacs, especiallty flash/microbeams, and then it is clear which need to be considered, thats what I plan to do....