Three-dimensional simulation of efficiency enhancement in free-electron laser with prebunched electron beam

2010 ◽  
Vol 17 (10) ◽  
pp. 103114 ◽  
Author(s):  
Mahboobeh Chitsazi ◽  
B. Maraghechi ◽  
M. H. Rouhani
Keyword(s):  
Electron Beam ◽  
Free Electron ◽  
Free Electron Laser ◽  
Three Dimensional ◽  
Efficiency Enhancement ◽  
Dimensional Simulation

scholarly journals EMITTANCE LIMITATION OF A CONDITIONED BEAM IN A STRONG FOCUSING FEL UNDULATOR

2007 ◽  
Vol 22 (22) ◽  
pp. 3826-3837 ◽  
Author(s):  
Z. HUANG ◽  
G. STUPAKOV ◽  
S. REICHE
Keyword(s):  
Electron Beam ◽  
Free Electron ◽  
Free Electron Laser ◽  
Three Dimensional ◽  
Complete Elimination ◽  
Dimensional Model ◽  
Simulation Code ◽  
One Dimensional ◽  
Strong Focusing ◽  
Dimensional Simulation

Various methods have been proposed to condition an electron beam in order to reduce its emittance effect and to improve the short-wavelength free electron laser (FEL) performance. In this paper, we show that beam conditioning does not result in a complete elimination of the emittance effect in an alternating-gradient focusing FEL undulator. Using a one-dimensional model and a three-dimensional simulation code, we derive a criteria for the emittance limitation of a perfectly conditioned beam that depends on the focusing structure.

Three-dimensional and nonlinear analysis of efficiency enhancement in the E × B drifting electron laser with a prebunched electron beam and a planar wiggler

2013 ◽  
Vol 79 (5) ◽  
pp. 739-749 ◽  
Author(s):  
B. MARAGHECHI ◽  
M. JOKAR ◽  
F. JAFARI BAHMAN ◽  
A. NAEIMABADI
Keyword(s):  
Electron Beam ◽  
Nonlinear Analysis ◽  
Free Electron ◽  
Free Electron Laser ◽  
Three Dimensional ◽  
Three Dimensions ◽  
Efficiency Enhancement ◽  
Nonlinear Simulation ◽  
Simulation Results

AbstractA nonlinear simulation of the E × B drifting electron laser (DEL) and the free-electron laser (FEL), in three dimensions, is presented for a prebunched electron beam to study efficiency enhancement. For the planar wiggler with flat pole faces, prebunching considerably shortens the saturation length, which favors the DEL compared to the FEL. Operation of the DEL with the planar wiggler with parabolic pole faces was not found to be possible due to the modulation of the E × B drift by the wiggler. However, simulation results of the FEL with this type of wiggler are reported.

scholarly journals Compensation of thermal loss in free-electron laser with optimal tapering and pre-bunching

2020 ◽  
Vol 38 (2) ◽  
pp. 141-147
Author(s):  
F. Bazouband
Keyword(s):  
Electron Beam ◽  
Free Electron ◽  
Free Electron Laser ◽  
Nonlinear Differential Equations ◽  
Three Dimensional ◽  
Energy Spread ◽  
Thermal Electron ◽  
Simulation Code ◽  
Runge Kutta Method ◽  
Saturation Power

AbstractIncreasing the output power of a long-wavelength free-electron laser (FEL), despite the destroying effects of beam energy spread, is studied using the optimal pre-bunching of the thermal electron beam along with the optimal tapering of the planar wiggler magnetic field. A set of self-consistent coupled nonlinear differential equations in three dimensional that describe the evolution of radiation and electron beam in the interaction zone are solved numerically by the Runge–Kutta method. The axial energy spread is considered and it degrades the FEL performance by reducing the saturation power and increasing the saturation length. To compensate these destroying effects, the optimum function or degree of electron beam pre-bunching and optimum parameters of wiggler tapering are found by the successive runs of the simulation code.

Time-Dependent, Three-Dimensional Simulation of Free-Electron-Laser Oscillators

2009 ◽  
Vol 102 (24) ◽  
Author(s):  
P. J. M. van der Slot ◽  
H. P. Freund ◽  
W. H. Miner Jr. ◽  
S. V. Benson ◽  
M. Shinn ◽  
...  
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Three Dimensional ◽  
Time Dependent ◽  
Laser Oscillators ◽  
Dimensional Simulation
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