Speaker
Description
We investigate a self-compression scheme for producing femtosecond, high-brightness electron bunches at low energy (<100 MeV) in compact accelerators (<10 m). The method uses a wiggler–chicane configuration in which CSR-induced energy modulation in the wiggler is converted into high-current spikes by a downstream chicane. As a case study, we assess its feasibility for TEX, which hosts a C-band photoinjector facility and is currently under commissioning at INFN-LNF. Numerical estimates and beam-dynamics simulations (ASTRA, Elegant, TStep) are used to evaluate achievable bunch lengths for different photoinjector operating modes and compression strategies. Building upon previous studies, this work also investigates collective effects at low energies, showing that space charge forces enhance the longitudinal compression factor. In conclusion, the conducted studies and supporting investigations are intended to highlight the potential for the production of high brightness, femtosecond long electron bunches within strict spatial constraints.
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