Python versus Perl

Our software is designed for integration into complex sequences controlled by external programs or scripts. This integration is facilitated by the following features:

All our programs may be launched from the command prompt or may be called by other programs with pass parameters.
Although the user interfaces are largely interactive, our programs feature input buffered through text scripts. [...]

Making movies with the AMaze programs

A previous post described new graphics features planned for the AMaze series of programs. They will be included with the October 1 update. The motivation is the creation of animations (movies in AVI format). We are adding expanded capabilities to the initial-value solution programs and postprocessors to generate sequences of BMP plot files, either autonomously or [...]

Case study of a high-current electron beam system

Three new tutorials are available in the technical library that describe design studies for a hollow-beam, high-power klystron. The documents include material of general interest to anyone interested in high-current electron beam technology.

In the case study, an annular electron beam with kinetic energy 100 keV and power 20 MW power is generated from an immersed cathode [...]

Tutorial: electron gun design with Trak

Vacuum electronic devices for microwave generation (e.g., klystron, traveling wave tube,…) require high-current-density electron beams matched to a focusing solenoid. The standard approach is to use a gun outside the field that generates a converging beam. The motivation is to allow relatively low current density at the cathode, consistent with operation at moderate temperature for long [...]

Calculating inductance from magnetic field solutions

We’re expanding our collection of tutorials illustrating finite-element simulation techniques. They address practical applications as well as benchmark comparisons with theory. You can browse the full set in our Technical Library at http://www.fieldp.com/library.html.

Finding inductance is one of the main uses of magnetic field software. We’ve just posted a tutorial that shows how to use PerMag to [...]