VSim for Basic Simulations
Perfect for learning basic electromagnetic, particle trajectory, and plasma physics
VSim for Basic Simulations (VSimBase) is a flexible, multiplatform, software tool for running computationally intensive electromagnetic, electrostatic, magnetostatic, and plasma simulations. 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, whether on your laptop or supercomputing cluster.
Learn basic plasma physics, including interactions of charged particles with electromagnetic and electrostatic fields using the particle-in-cell (PIC) methods or fluid methods in the multiphysics simulation software, VSimBase. Use VSimBase to explore and model the behavior of waves such as Langmuir oscillations, cyclotron oscillations, Bernstein modes, upper-hybrid modes, and other plasma waves. Compute Debye shielding (sheaths) and the plasma skin depth with VSimBase.
VSim for Basic Simulations provides a basic set of physics simulation features that can be used stand-alone or in combination with one or more specialty VSim packages. Just as with Tech-X's comprehensive VSim simulation product, both visualization and analysis functionality is integrated into VSim for Basic Simulations with the user-friendly front end, VSimComposer. A rich set of examples for common electromagnetic (EM), electrostatic, magnetostatic, and plasma physics problems are included with VSim for Basic Simulations, ensuring that you can simulate and model real physics problems right out of the box. Get VSim for Basic Simulations then add one or more other VSim packages for simulating more complex plasma devices, microwave devices, electromagnetic models, or plasma acceleration models.
As a stand-alone simulation tool, Physics educators can use VSimBase to model and demonstrate classical electromagnetic problems and introductory plasma physics problems, as well as a tool for introduction to computational physics. VSim for Basic Simulations easily installs and run on the variety of systems available to students, including Windows, Mac OS X, and Linux platforms.
- Slab electrostatic simulation (ES)
- Slab electromagnetic simulation (EM)
- Ingoing ports
- Outgoing ports
- Charged Particles
- Particle loaders and basic emitters
- Basic Electromagnetics and Plasma Physics capabilities:
- EM fields
- Relativistic particles
- Periodic and slab perfect conductor boundary conditions for fields
- Slab absorbers for particles
- Excellent educational tool
Questions? Contact us.
Example Simulations Included
Textbook Examples Using Visual Setup
- Cylindrical Capacitor
- Electromagnetic Particle In Cell
- Electromagnetic Plane Wave
- Electrostatic Particle In Cell
- Half-wave Antenna
- Magnetic Fields of Wire
- Oscillating Dipole Above Conducting Plane
- Parallel Plate Capacitor
- Two-Stream Instability
- Vacuum Electromagnetic Pulse
Textbook Examples Using Text Setup
Arrayed Waveguide Grating Simulated in Demultiplexing Mode
In this simulation, the fundamental mode is launched using a unidirectional wave launcher. Matching Absorbing Layers prevent reflections from simulation boundary. B_z is displayed in this visualization. The wave is coupled to the ring and next to the second waveguide.
Silicon Waveguide in Silica Cladding
Shown in the visualization are positive and negative contours (red and blue) of B_y. The clipped views with multiple contours of B_y are shown in the multicolored scenes. The unidirectionality of the mode launcher enables arbitrary placement of the wave source along the waveguide. Matched Absorbing Layers (MAL) reduce reflections at simulation boundaries.
Microring Resonator Simulation Setup and Visualization
The simulation geometry is set up in VSim using the graphical user interface. The visualization displays B_z. Matching Absorbing Layers prevent reflections from the simulation. The wave is coupled to the ring and next to the second waveguide. The fundamental mode is launched using a unidirectional wave launcher.
Colliding Laser Pulses Launch an Electron Beam into a Plasma Accelerator
This simulation visualization by Estelle Cormier-Michel of Tech-X was one of the 2011 U.S. Department of Energy's Scientific Discovery through Advanced Computing (SciDAC) program OASCR (for Office of Advanced Scientific Computing Research) award winners.
Laser-Wakefield Accelerators "Dream Beam"
All different incarnations of laser-wakefield accelerators. It shows the background electron density (surface) plus some high-energy particles (beam) as particles.
The electron density in a 2D simulation of the expansion of a two-component plasma (electrons, ions, at same temperature) in an ambient magnetic field (out of plane). It initially expands symmetrically, but due to the charge separation (on average faster electrons than ions), the electrons get pulled back into the center, leading to some radial oscillations. The ambient magnetic field causes the rotation.
That's a configuration as encountered e.g. after ignition of the target in an Inertial confinement Fusion experiment. This shows that the debris created in an ICF chamber could be confined by a strong magnetic field, thus protecting e.g. the optical inlets into the chamber.
A Magnetron simulation created using VSim.
The video shows a side-by-side comparison of the 2 secondary electron models and how the resonance zone of the realistic model is much wider than that of the simple model.
Photocathode simulation modeling performed with VSim. Animation created with POV-Ray.
Different incarnations of the wakefields generated by the propagation of an electron beam in a TESLA cavity.
Sheath potential on ITER ICRF antenna.
Sheath Plasma Current
This movie shows one of the 24 modules of the ITER RF antenna, immersed in plasma, with a sheath model. Left plot shows sheath potential and right plot shows Je plasma current.
Modeling ICRF Heating in Alcator C-Mod
This movie gives some detail on the construction of the geometry used to simulate Alcator C-Mod's field-aligned ICRF antenna in VSim. CAD files from the antenna (provided by MIT engineers) are imported to the VSim grid; thereafter, the antenna module is embedded in a half-torus rendering of C-Mod's vacuum vessel. Finally, an equilibrium plasma density profile (provided by MIT scientists) is loaded into the vessel.
Electric Field Contours
Vertical component of the electric field induced by the field-aligned ICRF antenna in the Alcator C-Mod device, in a simulation which imports plasma density and magnetic field profiles from experimental data. The geometry of the simulation is described in Modeling ICRF Heating in Alcator C-Mod: Geometry Construction. The phasing of the antenna straps is [0, π, 0, π]; complex patterns of fast wave propagation into and through the plasma core are clearly visible.
Plasma with Electric Field
Vertical component of the electric field induced by the field-aligned ICRF antenna in the Alcator C-Mod device, in a simulation which imports plasma density and magnetic field profiles from experimental data. In this animation the plasma profile is also shown; the data is the same as was used in Modeling ICRF Heating in Alcator C-Mod: Electric Field Contours, though the view is slightly different. The phasing of the antenna straps is [0, π, 0, π]; complex patterns of fast wave propagation into and through the plasma core are clearly visible.
Midplane Electric Field
Vertical component of the electric field induced by the field-aligned ICRF antenna in the Alcator C-Mod device, in a simulation which imports plasma density and magnetic field profiles from experimental data. In this animation the toroidal midplane of the device is shown; the data is the same as was used in Modeling ICRF Heating in Alcator C-Mod: Plasma with Electric Field, though the view is slightly different. The phasing of the antenna straps is [0, π, 0, π].
Poloidal Plane Electric Field
Vertical component of the electric field induced by the field-aligned ICRF antenna in the Alcator C-Mod device, in a simulation which imports plasma density and magnetic field profiles from experimental data. In this animation a two-dimensional poloidal cut across the antenna coax feeds is shown; the phasing of the antenna straps is [0, π, 0, π].
3D NIMROD simulation of the toroidal current density evolution based on an initial 2D reconstructed state from the DIII-D tokamak. This experimental discharge was characterized by an edge-localized mode free state with edge harmonic oscillations. See https://nimrodteam.org and https://fusion.gat.com/global/DIII-D for more information.
3D NIMROD simulation of the pressure evolution based on an initial 2D reconstructed state from the DIII-D tokamak. This experimental discharge was characterized by an edge-localized mode free state with edge harmonic oscillations. See https://nimrodteam.org and https://fusion.gat.com/global/DIII-D for more information.
Two oppositely propagating electron beams, with periodic boundaries and a sinusoidal variation in their velocities. A collision-less plasma instability arising from small charge imbalances can be seen.
An electromagnetic plane wave with a sinusoidal amplitude is launched from the left side (x=0). The transverse (y, z) boundary conditions are periodic.
This is a simulation of electrons in a box with conducting walls and particle absorbers, and with an immobile, background neutralizing charge density. The electrons move to the walls, creating a sheath.
A parallel plate capacitor. Try varying the gap to see the dependence of the electric field on length. By default the y and z directions are periodic, modeling an infinite parallel plate capacitor.
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.
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.