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Trim
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Trim3d is a 3D particle visualization program used to display the end result of an ion beam interacting with a target. Interactions involving millions of particles can be produced using simulation programs such as SRIM, which outputs the ending positions of the particles to a file. Trim3D takes this file and plots each point on a three-dimensional graph. Here is an example.
This example is a view of 100000 particles. Particles shoot along the X-axis (the yellow line) into the target and eventually stop inside it. The red dots represent the ending positions of the particles. The target was not visible in the example above. However, Trim3D can display the target if the user wishes:
Along with the basic display, the program provides a menu-based user interface.
The program also allows viewing ions as trajectories. Trajectories are the approximation of the paths that the ions take upon entering and stopping within the target. For example, here is a view of 100000 particles in trajectory mode.
Another feature allows the user to view the particles in density mode. Density mode uses color to indicate ion concentrations in every small unit of volume. Concentrations translate into color using either a linear or logarithmic scale. For example, here is a view of 100000 particles in logarithmic density mode.
In addition to viewing the particles, the user can select a subset of them. Trim3d currently supports prototypes of two selectors: a sphere and a cone. The user may expand or contract selectors. Here is the sphere selector. It selects the particles that lie between the two spheres. Selected particles are drawn in a distinctive color.
The cone selects all of the particles that lie within the cone.
The visualizations above show particles that stop within the target. Trim3D can also visualize particles that pass through the target. The picture below shows an example. The length of each line represents the remaining energy of a particle as it exits the target, and the direction of each line represents the direction in which the particle is traveling.
If you are interested in what else we are planning to do with this project, please feel free to view our Expansion Project page.
If you have any questions about the project, please email Dr.
Baldwin. |
