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Electron drift in a linear magnetic wiggler with an axial guide field

John A. Pasour, F. Mako, Charles W. Roberson

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Abstract

Abstract : Electron trajectories through a linear magnetic wiggler in an axial guide field are calculated numerically. Off-axis electrons are shown to drift in a direction perpendicular to the wiggler field because of the wiggler gradient. Effects of self fields and initial conditions are analyzed, and the results are compared to those obtained with a helical wiggler. An empirical analytic expression for the linear wiggler drift is presented, and means of stabilizing the drift are discussed. (Author)

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Abstract : Electron trajectories through a linear magnetic wiggler in an axial guide field are calculated numerically. Off-axis electrons are shown to drift in a direction perpendicular to the wiggler field because of the wiggler gradient. Effects of self fields and initial conditions are analyzed, and the results are compared to those obtained with a helical wiggler. An empirical analytic expression for the linear wiggler drift is presented, and means of stabilizing the drift are discussed. (Author)

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Available abstract

Abstract : Electron trajectories through a linear magnetic wiggler in an axial guide field are calculated numerically. Off-axis electrons are shown to drift in a direction perpendicular to the wiggler field because of the wiggler gradient. Effects of self fields and initial conditions are analyzed, and the results are compared to those obtained with a helical wiggler. An empirical analytic expression for the linear wiggler drift is presented, and means of stabilizing the drift are discussed. (Author)

Key concepts: Wiggler, Physics, Electron, Magnetic field, Perpendicular, Field (mathematics), Optics, Cathode ray

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