CST – Computer Simulation Technology

Photomultiplier Simulation | eSeminar

Photomultipliers are interesting devices to amplify light or to visualize a spectrum that cannot be seen by human eyes, such as infrared. They therefore enable sight under low light conditions and are used in devices like night vision goggles. They are also used for detection in scientific experiments.

The basic elements of a photomultiplier are a photocathode, an electron multiplier and a phosphor screen. At the photocathode, light releases electrons by means of the photoelectric effect. These electrons are accelerated towards the electron multiplier, where the electron current is amplified. Finally, the amplified current strikes a phosphor screen to convert the electrons into light again.

This eSeminar will use CST Studio Suite to simulate a photomultiplier. We will start with the electron optics, look at the photoemission, take into account any magnetic fields, consider the effect of space charge and finally investigate saturation effects.


Monika Balk
  • Monika BALK
  • is Market Development Manager for Charged Particle Applications at CST, part of the SIMULIA brand of Dassault Systèmes. She graduated in 2000 at the Gerhard-Mercator-University Duisburg, Germany, in high frequency engineering. She then got her Ph.D. at Technical University of Darmstadt, Germany, in 2005 with an accelerator physics related topic. In 2005 she joined CST as Senior Application Engineer for high frequency applications. During her work she has gained experience in charged particle applications with her support activities worldwide. Since 2008 she is Market Development Manager, and she has published several papers on Magnetron, TWT and general vacuum tube simulation.

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