Plasma Surface Interactions – Scientific Discovery through Advanced Computing (PSI-DAC)

As part of the Plasma Surface Interactions: Bridging from the Surface to the Micron Frontier through Leadership Class Computing SciDAC project, we are working to better understand how plasma facing components (PFCs) will interact with burning fusion plasmas. Researchers at CPMI are investigating processes like sputtering, re-deposition, and evolving surface roughness with Monte Carlo, binary collision approximation (BCA) codes. We have designed and developed several surface roughness models for TRIDYN (resulting in the Fractal TRIDYN code, or FTRIDYN) and are using these to investigate the role surface roughness plays in ballistic ion-surface interactions.

Click to Enlarge: D on Be Sputtering Yield

TRIDYN:
W. Möller, W. Eckstein, J.P. Biersack, Tridyn-binary collision simulation of atomic collisions and dynamic composition changes in solids, Computer Physics Communications, Volume 51, Issue 3, November 1988, Pages 355-368, ISSN 0010-4655, 10.1016/0010-4655(88)90148-8.
http://www.sciencedirect.com/science/article/pii/0010465588901488

Fractal TRIM:
D.N. Ruzic and H.K. Chiu, J. Nucl. Mater. 162-164 (1989) 904.

Experiment:
R.P. Doerner, D. Nishijima, T. Schwarz-Selinger, Nucl. Fusion 52 (2012) 103003

(Updated 2015)