Document Type : Research

Author

• Azadeh Ahmadian

Faculty member

Abstract

This paper investigates the effects of helical and planar wiggler fields on electron acceleration in an inverse free-electron laser (IFEL) with a circularly polarized laser beam, in the presence of an increasing external magnetic field. The influence of wiggler parameters, the slope of the external magnetic field, and the laser intensity parameter on the dynamics and acceleration of electrons have been examined. Numerical results show that in both helical and planar wiggler configurations, a significant amount of energy is transferred to the electron when optimal parameters are selected for the laser, wiggler field, and external magnetic field. In the helical wiggler case, the electron energy gain reaches up to 2.42GeV, while in the planar wiggler case, the maximum energy gain is about 1.85 GeV, This comparative analysis provides a deeper understanding of electron dynamics in inverse free-electron lasers and highlights the advantages of using a helical wiggler over a planar one.

Keywords

• Electron acceleration
• External magnetic field
• Helical wiggler
• Inverse free electron laser