Electron Trajectory Caustic Formation Resulting in Current Horns present in Bunch Compression

Tessa Charles, Mark Boland, Rohan Dowd, David Paganin, Schaa, Volker RW (Ed.), Petit-Jean-Genaz, Christine (Ed.), Ko, In Soo (Ed.), Kim, Kyung Sook (Ed.), Kim, Dong Eon (Ed.)
Current horns are ubiquitous in Free Electron Laser (FEL) bunch compression. In this paper, we analyse the formation of these current spikes and identify the cause as caustic formation in the electron trajectories. We also present a possible solution to avoid or mitigate the current horns from developing through using optical linearization.
doi:10.18429/jacow-ipac2016-mopow004 fatcat:ddprzsxueffydmzzfdsbsfqcq4