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 BP8: Poster Session I: MHD, Energetic Particles, Predictive Modeling, Plasma Surface Interactions; Diagnostic Measurements & Analysis; Non-Neutral, Anti-Matter & Strongly Coupled Plasmas; Plasma Technology
Monday, October 27, 2014
Room: Preservation Hall
Abstract ID: BAPS.2014.DPP.BP8.66
Abstract: BP8.00066 : Digital Holography for Plasma Facing Component (PFC) Erosion Measurement*
Preview Abstract Abstract
C.E. (Tommy) Thomas Jr.
(Third Dimension Technologies LLC)
One of the more serious engineering problems facing magnetic fusion energy reactors is the plasma/first-wall or plasma/divertor interface. Hot particles striking these PFC's could easily force replacement in less than a year. In-situ quantitative real-time erosion diagnostics to help understand the erosion process are not currently available. Single wavelength Digital Holography (DH) has been developed to a considerable level of sophistication and dual-wavelength (synthetic wavelength) DH has the potential to be a reliable vibration-resistant erosion diagnostic. Ambiguity free measurements at kHz rates of up to 1 cm of erosion with $\sim$ 1 micron resolution into the PFC and diffraction limited resolution transverse to the PFC are possible. Development of DH as an in-situ real-time PFC erosion diagnostic will be discussed and example data from single-wavelength DH will be presented.
*Partial Support from USDOE Contract DE-AC02-09CH11466 and USDOE Grant DE-FG02-07ER84724 is gratefully acknowledged.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2014.DPP.BP8.66
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