BEAMSTopic
Coherent synchrotron radiation and microbunching in bends
When a short electron bunch bends in a magnet, radiation from its tail catches up with its head and pushes on it, which can blur the beam or break it into tiny density ripples. Predicting these self-forces in three dimensions, and using them to make light on purpose, are open.
Why it matters
These self-forces limit how short and bright bunches can be made for x-ray FELs and low-emittance storage rings.
Review
K. L. F. Bane, Y. Cai, G. Stupakov, Threshold studies of the microwave instability in electron storage rings, Physical Review Special Topics - Accelerators and Beams, 2010. https://doi.org/10.1103/PhysRevSTAB.13.104402 reference checked
See also
- Related What sets the uncorrelated energy spread of high-brightness electron beams
- Related What mechanism produces coherent pulsar radio emission?
Proof
- Signed record
- 5a86adf3ddd8…
- Public log
- Entry 65, in checkpoint 2,123
- Bitcoin date
- Waiting for Bitcoin (usually a few hours)