1 research outputs found
Exploring Minimal Scenarios to Produce Transversely Bright Electron Beams Using the Eigen-Emittance Concept
Next generation hard X-ray free electron lasers require electron beams with
low transverse emittance. One proposal to achieve these low emittances is to
exploit the eigen-emittance values of the beam. The eigen-emittances are
invariant under linear beam transport and equivalent to the emittances in an
uncorrelated beam. If a correlated beam with two small eigen-emittances can be
produced, removal of the correlations via appropriate optics will lead to two
small emittance values, provided non-linear effects are not too large. We study
how such a beam may be produced using minimal linear correlations. We find it
is theoretically possible to produce such a beam, however it may be more
difficult to realize in practice. We identify linear correlations that may lead
to physically realizable emittance schemes and discuss promising future
avenues.Comment: 7 pages, 2 figures, to appear in NIM