27 May 2003 Speckle interferometry application for erosion measurements in fusion devices
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Proceedings Volume 4933, Speckle Metrology 2003; (2003) https://doi.org/10.1117/12.516650
Event: Speckle Metrology 2003, 2003, Trondheim, Norway
Abstract
In order to measure erosion/redeposition in fusion devices, a new diagnostic based on speckle interferometry is investigated. First experiments performed on carbon fiber composite (CFC) materials have shown that this technique is able to measure a modification of the surface in the range of 1 μm. Further experiments have been performed on different materials using a second wavelength in order to carry out 3D measurements of the surface and to increase the dynamic range of the depth measurement. A diagnostic, based on two-wavelength TV-holography to measure in situ erosion/redeposition during long duration discharges on the CIEL limiter in Tore Supra, is under development at CEA Cadarache.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
E. Gauthier, E. Gauthier, R. Roupillard, R. Roupillard, } "Speckle interferometry application for erosion measurements in fusion devices", Proc. SPIE 4933, Speckle Metrology 2003, (27 May 2003); doi: 10.1117/12.516650; https://doi.org/10.1117/12.516650
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