Time-dependent simulation of prebunched one and two-beam free electron laser

A numerical simulation in one-dimension is conducted to study the slippage effects on prebunched free electron laser. A technique for the simulation of time dependent free electron lasers (FEL) to model the slippage effects is introduced, and the slowly varying envelope approximation in both z and t...

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Bibliographic Details
Published in:Physics of plasmas 2014-04, Vol.21 (4)
Main Authors: Mirian, N. S., Maraghechi, B.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAMS
Computer simulation
COMPUTERIZED SIMULATION
Energy distribution
FREE ELECTRON LASERS
Laser beams
Mathematical models
Phase distribution
Plasma physics
Pulse duration
Pulse shape
PULSE SHAPERS
PULSES
Simulation
Slippage
TIME DEPENDENCE
Time dependent analysis
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Summary:A numerical simulation in one-dimension is conducted to study the slippage effects on prebunched free electron laser. A technique for the simulation of time dependent free electron lasers (FEL) to model the slippage effects is introduced, and the slowly varying envelope approximation in both z and t is used to illustrate the temporal behaviour in the prebunched FEL. Slippage effect on prebunched two-beam FEL is compared with the one-beam modeling. The evaluation of the radiation pulse energy, thermal and phase distribution, and radiation pulse shape in one-beam and two-beam modeling is studied. It was shown that the performance is considerably undermined when the slippage time is comparable to the pulse duration. However, prebunching reduces the slippage. Prebunching also leads to the radiation pulse with a single smooth spike.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4873392