Magnetic lens - QuickField simulation example
Magnetic lens is used for electron beams focusing.
How to find magnetic lens electron beam focusing field?
Answer Typical applications Geometry
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Task
Solution
Results
Engineering question
Set up an axisymmetric QuickField DC Magnetics problem for a magnetic lens and evaluate electron beam focusing field from computed field results.
magnetic electron lenses, beam focusing magnets, vacuum beamline optics
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Simulation problem
Problem Type
Axisymmetric problem of DC magnetics.
Relative permittivity of vacuum ε = 1;
Coil current I = 10 A.
Relative permeability of the core μ = 1000;
Charge (electron) q = -1.602e-19 C
Mass (electron) m = 9.109e-31 kg
Initial velocity vy = 300 km/s, vz = 1000 km/s.
Calculate the charged particle trajectory.
Particle trajectory may be calculated using the free tool TrajectoryTracer.
Final velocity vy = 2.2 km/s, vz = 1000 km/s.
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