Title :
Effects of the axial magnetic field component on the electron trajectory in the wiggler section
Author :
Migliano, A.C.C. ; Paes, A.C.J. ; De Polli, Y.C. ; Stopa, C.R.S. ; Cardoso, J.R.
Author_Institution :
Centro Tecnico Aerospacial, Brazil
fDate :
9/1/1998 12:00:00 AM
Abstract :
A section of a wiggler with SmCo5 magnets was designed to be utilized in an infrared free-electron laser (IRFEL). The choice of low-cost small magnets resulted in a small gap in the wiggler (⩽10.0 mm). This gap size accentuated the edge effects, thus making the profile of the magnetic field more susceptible to distortion. The solution of the magnetic field component was obtained from finite-element computer codes and measurements of the magnetic field distribution in the inner region of the wiggler were performed. Effects of the axial magnetic field component on the electron beam trajectories were studied using a single-particle model neglecting collective effects
Keywords :
electron beams; finite element analysis; free electron lasers; laser accessories; magnetic field measurement; magnetic fields; permanent magnets; wigglers; SmCo5; SmCo5 magnets; axial magnetic field component; edge effects; electron beam trajectory; finite-element computer codes; gap size; infrared free-electron laser; magnetic field component; magnetic field distribution measurement; magnetic field profile; single-particle model; wiggler section; Distortion measurement; Distributed computing; Finite element methods; Free electron lasers; Laser noise; Magnetic field measurement; Magnetic susceptibility; Magnets; Optical design; Undulators;
Journal_Title :
Magnetics, IEEE Transactions on
