Vorpal for Multipactor Studies
Vorpal is a flexible, multiplatform, Particle-in-Cell (PIC) simulation tool for running computationally intensive plasma, electromagnetic and electrostatic problems. Switch easily between 1, 2, or 3 dimensions then watch your model run lightning fast using algorithms designed for the exacting demands of high performance computing systems, whether on your laptop or supercomputing cluster.
Multipactor is serious problem that can be critical in the performance of high power vacuum microwave devices, radar systems, satellite communications and particle accelarators. Analytical models are limited to simple geometries with simplified assumptions about secondary emission so numerical studies are necessary both for prediction and supression analysis of the multipactor discharges in complex structures. Statistical sampling is needed since secondary emission is an inherently random process.
We have a number of features which make Vorpal particularly suitable for multipactor studies:
- 1D/2D/3D solution
- Scaling onto hundreds of cores enables brute force modelling of saturation effects.
- Particle recombination.
- Variable weight particles: Macroparticles in the simulation do not all represent the same number of real particles - growth in real particle population can be stored in a weight attribute for each macroparticle.
- Postprocessing tools that allow users to investigate hard/soft boundaries.
- Accurate, cut-cell emission and field solution
- Field scaling particles - sweep across a range of powers to detect multipactor susceptability in a single simulation.
- Use advanced plots to detect difference between hard and soft multipactor
- Choice of secondary emission yield model: Furman-Pivi /Functional/ User defined SEY