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 [...]
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 [...]
(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 [...]
Both Trak and OmniTrak can include contibutions of cathode temperature to the emittance of extracted electron beams. The theory of how the thermal energy of electrons emitted a hot cathode appears as an angular beam divergence is discussed in Sect. 10.3 of the Trak manual, Sect. 11.2 of the OmniTrak manual and the the following articles [...]
HelpTags and ToolTips are the small instruction boxes that appear when the mouse cursor hovers over a window control or toolbar entry. Xojo (nee RealBasic) supports them, but it is not immediately apparent how to use them effectively. This article discusses options to fine-tune the user experience.
A HelpTag is the easiest way to create a help [...]