Bulletin of the American Physical Society
64th Annual Meeting of the APS Division of Plasma Physics
Volume 67, Number 15
Monday–Friday, October 17–21, 2022; Spokane, Washington
Session BP11: Poster Session I: In-Person, Hall A (9:30-11:00am) and Virtual Poster Presentations (11:15am-12:30pm)
MFE: Analytical,computational; Energetic Particles; Disruptions; Power Handling
ICF: Z-Pinch; MagnetoInertial Fusion; Hydrodynamics; Indirect drive
9:30 AM - 12:30 PM
Monday, October 17, 2022
Room: Exhibit Hall A and Online
Abstract: BP11.00065 : Using GITR to simulate and predict performance of silicon carbide as first-wall material in DIII-D.*
Presenter:
Aritra De
(Oak Ridge Associated Universities)
Authors:
Aritra De
(Oak Ridge Associated Universities)
Zachary J Bergstrom
(Los Alamos National Laboratory)
Jerome Guterl
(General Atomics - San Diego)
Stefan A Bringuier
(General Atomics - San Diego)
Tyler Abrams
(General Atomics - San Diego)
Dmitry L Rudakov
(UCSD)
Collaborations:
Aritra De, Zachary Bergstrom, Jerome Guterl, Stefan Bringuier, Tyler Abrams, Dmitry Rudakov
a) Oak Ridge Associated Universities, Oak Ridge, TN 37830, USA
b) General Atomics, San Diego, CA 92186, USA
c) University of California, San Diego, La Jolla, CA 92093, USA
Simulations of the transport and re-deposition of low-Z impurities in the scrape-off-layer are being conducted with the Monte Carlo plasma-materials interactions code GITR to study the evolution of silicon carbide (SiC) as a plasma-facing material. To that end, GITR is being upgraded to handle low-Z chemically reactive plasma impurities such as C and Si. A reduced semi-analytical surface model that tracks the surface composition of the material interacting with the main plasma ions and the impurities has been implemented into GITR, similar to the homogeneous mixed material model used in ERO1.0. This surface model is used to calculate chemical and physical sputtering fluxes and the re-deposition of Si and C impurities onto plasma-facing components. The validation of this reduced surface model is performed through comparison with binary collisional approximation (BCA) codes, such as RustBCA. Finally, the erosion and re-deposition of SiC material, exposed to L-mode attached plasma in the lower divertor of DIII-D using DiMES, are modeled using GITR in conjunction with this newly developed surface model. Uncertainty quantification is applied to those simulations and consequences for predictive simulations of SiC performances as first wall material are discussed.
*Work supported by US DOE under DE-SC0018423 and DE-FC02-04ER54698.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700