Online magnet calculators

Last week I received the type of tech-help inquiry that accounts for 83% of strokes among software developers. A user reported that results from our 3D code did not agree with numbers he obtained from one of those free magnet calculators that you find on the Internet. Given the choice of believing a finite-element, multi-processor program [...]

Using two-dimensional field solutions in OmniTrak

An OmniTrak feature that may not be familiar is the capability to include two-dimensional field solutions from Estat or PerMag. I recently had a consulting job where this was just the thing I needed, so I thought I would take this opportunity to review why the feature is valuable and how to apply it.

There are two [...]

Custom trajectory color-coding in Trak

A customer recently asked about color-coding particle trajectories in Trak and OmniView. He wanted to start particles from an input list (PRT) and to plot trajectories with colors determined by the injection kinetic energy. This is a fairly tall order, but I came up with a procedure for plotting up to three classes of particles using [...]

Multiple particle species in Trak

Trak can handle multiple charged-particle species in a single run. The program can even determine self-consistent space-charge-limited emission for different particle types from multiple emission surfaces. When responding to a user question about run setups, I realized that there was no example to illustrate the capability in the Trak library. This example describes the example BIPOLAR [...]

Using the ConTEXT text editor, update

(Update of an article originally published April 6th, 2008)
A good text editor is one of the most useful tools you can install on your computer, particularly if you do a lot of technical work. If you are using a primitive utility like NotePad, you owe it to yourself to move up. The good news is that [...]