is a high performance electromagnetic code using the FDTD numerical method and also solves for particle motion and plasma physics kinetic equations.

potential dustThe VSim electromagnetic, particle, and plasma high performance application is a flexible, multiplatform, Particle-in-Cell (PIC) simulation tool for running computationally intensive modeling problems. VSim enables you to switch easily between 1, 2, or 3 dimensions and then watch your model run lightning-fast.  Using algorithms designed for the exacting demands of high performance computing systems, VSim can run simulations on your laptop or supercomputing cluster.

With VSim, you can start simulating using our wide range of examples, which demonstrate both classical physics problems and real world devices.  Our real world examples include plasma discharges, ion thrusters, satellite charging, RADAR antennas, vacuum electronics, photonic devices, and particle accelerator components.  Easily customize these models to run your own simulations.

Alternatively, you can create your own simulations with our powerful command language.  Whether you start with our examples or create your simulations, you will be using the same trusted, extensively bechmarked physics engine.

From the World's Largest Supercomputing
Facilities to You

In the early years of its development, VSim's physics engine was used to meet the needs of a variety of challenges for the United States government, including plasma acceleration, accelerator cavity modeling, and magnetic fusion studies. These challenging studies required thousands of processors at the nation's largest unclassified computing facilities.  Now you can perform the same simulation modeling on your workstation or cluster. 

science cover

September 30, 2004 cover of Nature shows VSim physics engine, Vorpal, results that were used to guide experimental success in plasma acceleration.

Scalable Simulations

Since VSim supports massively parallel computing and scales to tens of thousands of processor cores, new problems that were previously unsolvable are now within reach. VSim works on Linux, Windows, or Mac OS X platforms. Our competitive pricing means that the more computing cores you need, the less you pay, whether you use batch computing on clusters, or large single computing jobs.

vorpal fdtd scaling

Questions? Contact us.



Pay Only for the Functionality You Need


VSim packages provide the pricing flexibility and convenience you want.  Choose the package or set of packages that has the physics simulation functionality that you need.

vsimbase thumbnailVSimBasicSim
Perfect for learning basic electromagnetic, particle trajectory, and plasma physics. More...

vsimem thumbnailVSimEM
Fast, Powerful FDTD for Electromagnetics that solves electromagnetic problems. More...

vsimmd thumbnailVSimMD
Electromagnetic and particle modeling features for magnetrons, klystrons, and More...

vsimpd thumbnailVSimPD
Enables resolution of kinetic effects for discharges not observable in fluid simulations.  More...

vsimpa thumbnailVSimPA
Large-scale simulations of laser-plasma and beam-plasma acceleration experiments.  More...



VSim packages provide you with a diverse range of relevant examples, macros and the powerful graphical user interface to the simulation engine, together with embedded analysis tools. Functionality is collected in common packages to provide the pricing flexibility and convenience you want. Custom packages are also available to give even more flexibility in pricing. See the VSim Features Matrix.

Request a free VSim Evaluation or contact Tech-X Sales for a quote.


Online Tutorials

Watch VSim Video Tutorials on YouTube


VSim Training Courses at Tech-X

If you would like to be contacted when upcoming VSim training courses are scheduled, please contact us for training schedule notification.

Here is a sample agenda from some of our most popular VSim courses.


VSim Class Program for Universities

Tech-X offers a program to enable teaching professors the opportunity to pass along valuable computational skills to students by utilizing VSim to help teach the fundamentals of physics. Learn more.

Customized and Private Training

  • Courses are typically 3-4 days. See sample agendas for typical course contents.
  • Onsite training takes place at in Boulder, Colorado at Tech-X U.S. Headquarters.
Onsite Training Rates
  • Regular rate per trainee: $550/day.
Custom Training Rates
  • Discounts available for 10 or more trainees from a single institution.
  • Prices vary depending on degree of customization.
  • Offsite training costs include travel.
  • Contact us for a quote.



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