Simulation of superradiant free-electron lasers

Conference · Wed Jan 04 04:00:00 EST 1989

OSTI ID:6475036

Sharp, W M; Fawley, W M; Yu, S S; Sessler, A M; Bonifacio, R; deSalvo Souza, L

It has been suggested that slippage effects in a single-pass free- electron laser can generate an output signal near the electron beam tail with a peak amplitude many times greater than the expected saturated value. The growth of such ''superradiant'' pulses in a helical-wiggler FEL is characterized here using 1-D and 2-D numerical simulations. The 1-D calculations show the effects of detuning, energy spread, and the axial current distribution on superradiant pulses, while preliminary 2-D simulations illustrate the effects of betatron motion and the radial structure of the electron beam. 12 refs., 6 figs., 1 tab.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6475036
• Report Number(s): UCRL-98676; CONF-8808146-12; ON: DE89006156
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
BEAM CURRENTS
BEAM DYNAMICS
BETATRON OSCILLATIONS
COMPUTERIZED SIMULATION
CURRENTS
DIFFERENTIAL EQUATIONS
EMISSION
ENERGY-LEVEL TRANSITIONS
EQUATIONS
EQUATIONS OF MOTION
FREE ELECTRON LASERS
LASERS
ONE-DIMENSIONAL CALCULATIONS
ORBITS
OSCILLATIONS
PARTIAL DIFFERENTIAL EQUATIONS
PHOTON EMISSION
SIMULATION
STIMULATED EMISSION
SUPERRADIANCE