OmniTrak: superposition of magnetic field tables

OmniTrak is our software package for charged-particle guns and beam dynamics. The solution program can read output files from HiPhi and Magnum for 3D electric and magnetic field information. These complex files record values of potential on conformal meshes. Tables are another option for field information. Tables record [Ex,Ey,Ez] or [Bx,By,Bz] on a regular box mesh. […]

Magnetic saturation: educated guessing

In finite-element solutions at low magnetic fields, the properties of ferromagnetic materials are not critically important. The quantity used in the solutions is ?= 1/?r. In this case, both 1/800 and 1/8000 are close to zero compared to unity; therefore, the details of the ?r(B) curve make little difference in the solution. On the other hand, […]

Resources for finite-element electric/magnetic field solutions

This is the concluding article of the online course, Electric and magnetic field calculations with finite-element methods. In the course, we’ve had a chance to get familiar with the operation sequences and data organization of 2D and 3D programs and discovered many useful analysis techniques. Hopefully, the material will help you get started on your own […]

3D magnetic fields: iron and permanent magnets

This article is part of the continuing online course, Electric and magnetic field calculations with finite-element methods. For the final calculation of the course, we’ll characterize forces in a latching solenoid. The example exercises the full finite-element capabilities of Magnum and provides an opportunity to use the force-calculation capabilities of MagView. In preparation, copy the files […]

3D magnetic fields: free-space calculations

This article is part of the continuing online course, Electric and magnetic field calculations with finite-element methods. We’ll continue the topic of 3D magnetic fields by discussing Magnum operation in the FreeSpace mode. The mode applies to calculations in an infinite space without magnetic materials. In other words, all objects in the solution space have ?r […]