Coherent spontaneous emission in high gain free-electron lasers.

Conference · Wed Apr 14 00:00:00 EDT 1999

OSTI ID:11126

muang, Z

The authors investigate finite pulse effects in self-amplified spontaneous emission (SASE), especially the role of coherent spontaneous emission (CSE) in the start and the evolution of the free-electron laser (FEL) process. When the FEL interaction is negligible, they solve the one-dimensional Maxwell equation exactly and clarify the meaning of the slowly varying envelope approximation (SVEA). In the exponential gain regime, they solve the coupled Vlasov-Maxwell equations and extend the linear theory to a bunched beam with energy spread. A time-dependent, non-linear simulation algorithm is employed to study the CSE effect for a general beam distribution.

• Research Organization: Argonne National Lab., IL (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 11126
• Report Number(s): ANL/ASD/CP-97720; TRN: US0104297
• Resource Relation: Conference: 1999 Particle Accelerator Conference (PAC '99), New York, NY (US), 03/29/1999--04/02/1999; Other Information: PBD: 14 Apr 1999
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
ALGORITHMS
BOLTZMANN-VLASOV EQUATION
FREE ELECTRON LASERS
MAXWELL EQUATIONS
BEAM BUNCHING