Bulletin of the American Physical Society
56th Annual Meeting of the APS Division of Plasma Physics
Volume 59, Number 15
Monday–Friday, October 27–31, 2014; New Orleans, Louisiana
Session YI2: Technology of Plasma Facing Surfaces, Landau-Spitzer Award and Post Deadline Talk
9:30 AM–12:30 PM,
Friday, October 31, 2014
Chair: Charles Skinner, Princeton Plasma Physics Laboratory
Abstract ID: BAPS.2014.DPP.YI2.1
Abstract: YI2.00001 : Landau-Spitzer Award: Fast-Ion Transport in the ASDEX Upgrade and DIII-D Tokamaks*
9:30 AM–10:00 AM
Preview Abstract Abstract
(University of Seville, IPP-Garching)
Unprecedented insight into the fast-ion transport caused by a broad range of fluctuations has been made possible in the ASDEX Upgrade (AUG) and DIII-D tokamaks thanks to a new set of fast-ion diagnostics developed in the framework of a transatlantic collaboration. The temporal evolution of the fast-ion radial profile with velocity-space resolution has been measured in the AUG tokamak with the implementation of the Fast-Ion D-Alpha (FIDA) technique and associated analysis tools developed originally by the DIII-D group. Time resolved phase-space measurements of fast-ion losses made in DIII-D with a scintillator-based Fast-Ion Loss Detector (FILD) developed at AUG have revealed crucial details of the fast-ion dynamics in the presence of a broad range of MHD perturbations. The joint application of these techniques to AUG and DIII-D plasmas has advanced our understanding of the wave-particle interaction responsible for the fast-ion transport induced by Alfven Eigenmodes (AEs), Sawteeth and Edge Localized Modes (ELMs). Accurate measurements of the fast-ion radial profile have demonstrated the weak or negligible effect that microturbulence has on fast-ion transport. Additionally, multiple FILD and FIDA systems in both devices show a significant increase in EP loss due to externally applied 3D fields (such as those used for ELM control). A survey of the most relevant experimental and modelling results obtained through this collaboration will be presented. This work was carried out together with B. Geiger (IPP-Garching), W.W. Heidbrink (UC-Irvine), D. C. Pace, M. A. Van Zeeland (General Atomics) and the ASDEX Upgrade and DIII-D Teams.
*Work supported in part by the US Department of Energy under DE-FC02-04ER54698. This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement number 633053.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2014.DPP.YI2.1
The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.
1 Physics Ellipse, College Park, MD 20740-3844
Editorial Office 1 Research Road, Ridge, NY 11961-2701 (631) 591-4000
Office of Public Affairs 529 14th St NW, Suite 1050, Washington, D.C. 20045-2001 (202) 662-8700