A three-dimensional analysis of a novel free-electron laser (FEL) based upon a rectangular hybrid wiggler (RHW) is presented. This RHW is designed in a configuration composed of rectangular rings with alternating ferrite and dielectric spacers immersed in a solenoidal magnetic field. An analytic model of RHW is introduced by solution of Laplace's equation for the magnetostatic fields under the appropriate boundary conditions. The single-electron orbits in combined RHW and axial guide magnetic fields are studied when only the first and the third spatial harmonic components of the RHW field are taken into account and the higher order terms are ignored. The results indicate that the third spatial harmonic leads to group III orbits with a strong negative mass regime particularly in large solenoidal magnetic fields. RHW is found to be a promising candidate with favorable characteristics to be used in microwave FEL.
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September 2012
Research Article|
September 17 2012
The analysis of single-electron orbits in a free electron laser based upon a rectangular hybrid wiggler
A. Kordbacheh;
A. Kordbacheh
a)
1
Department of Physics, Iran University of Science and Technology
, 1684613114 Tehran, Iran
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Roghayeh Ghahremaninezhad;
Roghayeh Ghahremaninezhad
1
Department of Physics, Iran University of Science and Technology
, 1684613114 Tehran, Iran
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B. Maraghechi
B. Maraghechi
2
Department of Physics, Amirkabir University of Technology
, 159163411 Tehran, Iran
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Phys. Plasmas 19, 093114 (2012)
Article history
Received:
June 06 2012
Accepted:
August 27 2012
Citation
A. Kordbacheh, Roghayeh Ghahremaninezhad, B. Maraghechi; The analysis of single-electron orbits in a free electron laser based upon a rectangular hybrid wiggler. Phys. Plasmas 1 September 2012; 19 (9): 093114. https://doi.org/10.1063/1.4752072
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