Physics – Accelerator Physics
Scientific paper
2011-05-19
Physics
Accelerator Physics
Scientific paper
In some options for circular polarization control at X-ray FELs, a helical radiator is placed a few ten meters distance behind the baseline undulator. If the microbunch structure induced in the baseline (planar) undulator can be preserved, intense coherent radiation is emitted in the helical radiator. The effects of betatron motion on the preservation of micro bunching in such in-line schemes should be accounting for. In this paper we present a comprehensive study of these effects. It is shown that one can work out an analytical expression for the debunching of an electron beam moving in a FODO lattice, strictly valid in the asymptote for a FODO cell much shorter than the betatron function. Further on, numerical studies can be used to demonstrate that the validity of such analytical expression goes beyond the above-mentioned asymptote, and can be used in much more a general context. Finally, a comparison with Genesis simulations is given.
Geloni Gianluca
Kocharyan Vitali
Saldin Evgeni
No associations
LandOfFree
The effects of betatron motion on the preservation of FEL microbunching does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The effects of betatron motion on the preservation of FEL microbunching, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The effects of betatron motion on the preservation of FEL microbunching will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-69286