title: Long-range persistence of femtosecond modulations on laser-plasma-accelerated electron beams.
abstract: Laser plasma accelerators have produced femtosecond electron bunches with a relative energy spread ranging from 100% to a few percent. Simulations indicate that the measured energy spread can be dominated by a correlated spread, with the slice spread significantly lower. Measurements of coherent optical transition radiation are presented for broad-energy-spread beams with laser-induced density and momentum modulations. The long-range (meter-scale) observation of coherent optical transition radiation indicates that the slice energy spread is below the percent level to preserve the modulations.
authors.affiliation: Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
authors.forename: C
authors.initials: C
authors.lastname: Lin
authors.forename: J
authors.initials: J
authors.lastname: van Tilborg
authors.forename: K
authors.initials: K
authors.lastname: Nakamura
authors.forename: A J
authors.initials: AJ
authors.lastname: Gonsalves
authors.forename: N H
authors.initials: NH
authors.lastname: Matlis
authors.forename: T
authors.initials: T
authors.lastname: Sokollik
authors.forename: S
authors.initials: S
authors.lastname: Shiraishi
authors.forename: J
authors.initials: J
authors.lastname: Osterhoff
authors.forename: C
authors.initials: C
authors.lastname: Benedetti
authors.forename: C B
authors.initials: CB
authors.lastname: Schroeder
authors.forename: Cs
authors.initials: C
authors.lastname: Tóth
authors.forename: E
authors.initials: E
authors.lastname: Esarey
authors.forename: W P
authors.initials: WP
authors.lastname: Leemans