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. […]

Magnum for MRI facility shielding

I recently had an inquiry from the president of a company that creates magnetic shielding for MRI facilities. In the past, the company installed iron sheets in response to customer specifications. The company’s current goal is to assume more design responsibilities by developing an in-house computational capability. Figure 1 shows a typical MRI facility along with […]

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 […]

3D magnetic fields: defining coil currents

This article is part of the continuing online course, Electric and magnetic field calculations with finite-element methods. We’ll start the final topic, three-dimensional magnetic field solutions. The previous articles on electrostatics covered many common techniques for 3D solutions, particularly mesh generation. Here, we’ll focus on the differences between Magnum and HiPhi calculations that arise from the […]

Defining material properties for PerMag and Magnum

PerMag and Magnum calculate magnetostatic fields in 2D and 3D geometries. An noteworthy feature of the programs is the ability to represent saturation effects in iron-like materials (i.e., non-linear solutions). To perform the calculations, the programs require data on the response of the specific materials. The two programs use different calculation methods, so they require different […]