Time-domain measurement of a self-amplified spontaneous emission free-electron laser with an energy-chirped electron beam and undulator tapering
Abstract
We report, with an unequivocal time-domain measurement, that an appropriately chosen undulator taper can compensate for an electron beam longitudinal energy-chirp in a free-electron laser amplifier, leading to the generation of single-spike radiation close to the Fourier limit. The measurements were taken using the frequency-resolved optical gating technique by employing an advanced transient-grating diagnostic geometry. The reconstructed longitudinal radiation characteristics are compared in detail to prediction from time-dependent three-dimensional simulations.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 24, 2012
- Source ID
- 10.1063/1.4754612
Entities
People
- A. Bacci
- A. Cianchi
- A. Mostacci
- A. Petralia
- A. R. Rossi
- D. Filippetto
- E. Chiadroni
- F. Ciocci
- G. Di Pirro
- G. Gatti
- G. Marcus
- J. B. Rosenzweig
- J. V. Rau
- L. Giannessi
- M. Artioli
- M. Bellaveglia
- M. Del Franco
- M. Ferrario
- M. Labat
- M. Quattromini
- V. Petrillo
Organizations
- Office of Naval Research
- Sapienza University of Rome
- Tor Vergata University of Rome
- United States Department of Energy
- University of California, Los Angeles
- University of Milan