Resonant frequency and Q of a loaded klystron output cavity

After many benchmark tests and comparisons with theory, I was ready to try Aether on a major production run. The calculation determined the resonant frequency and Q value for the fundamental mode of a loaded klystron output cavity. The three-dimensional solution employed the full range of Aether features included an absorbing boundary. The work is of [...]

Let’s make a refrigerator magnet

To illustrate a Magnum calculation of the holding force of a permanent-magnet assembly, what better example than a refrigerator magnet (RM)? Certainly, the mass of RMs in use throughout the world exceeds that of the Large Hadron Collider.

The first picture shows the geometry of a high-quality RM. The magnet is a button of NdFeB with diameter [...]

Numerical calibration of a capacitive voltage probe

I often get questions about how to calculate capacitance using EStat or HiPhi. The main problem is that it is a derived quantity rather than one that pops directly out of the black box. In this post, I’ll review a practical EStat calculation to show how to calculate mutual capacitances in a 3-electrode system. If you [...]

Calculating resonant modes with Aether

The development of Aether proceeds inexorably forward, albeit on a Microsoft schedule. We routinely set back the release date as we think of more features to add. Nonetheless, I absolutely guarantee that it will be available by the end of the summer.

For those of you who have been living in undisclosed locations, Aether is the final [...]