Benchmark between CPO (Charged Particle Optics) and COMSOL Multiphysics

J.-M. Barois, and C. Goulmy
PHOTONIS, Brive, France

Streak tubes are widely used in high-speed signal analysis; they give spatial, temporal and intensity information about one single event. Time resolutions of 0.7 pico-second can be achieved and in that time-domain, PHOTONIS tubes are second-to-none.

Applications are numerous and range from plasma physic to femtosecond laser applications. In streak tubes, electrons move from the photocathode to the anode screen, and the electron transit time and its variance is a very important characteristic.

Obviously, electron trajectories computation is a very important step in tube design. This paper deals with a comparison between results obtained using Charge Particles Optic and COMSOL software.