Optical characterization of plasma facing mirrors for a Thomson scattering system of a burning plasma experiment

F.P. Orsitto, D. Del Bugaro, M. DiFino, A. Maiolo, M. Montecchi, E. Nichelatti, C. Gowers, P. Nielsen

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Abstract

The general requirements for a plasma facing mirror (PFM) of a Thomson scattering system (TS) for a burning plasma experiment are (i) high and approximately constant reflectivity in the wavelength spectral range 400-800 nm; (ii) low sputtering yield and low erosion; (iii) high power damage threshold; (iv) good thermo-mechanical properties to preserve quality imaging. Rhodium-coated mirrors are chosen because they meet these requirements. Rhodium coated mirror were realized with substrates of copper and vanadium. The detailed optical characterization of these mirrors is presented: i.e., surface planarity measurements as well as roughness and reflectivity figures are presented. These data can be used for the choice of the PFM of a TS system for international thermonuclear experimental reactor. © 2001 American Institute of Physics.
Original languageEnglish
Pages (from-to)540 - 544
Number of pages5
JournalReview of Scientific Instruments
Volume72
Issue number1 II
DOIs
Publication statusPublished - Jan 2001

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All Science Journal Classification (ASJC) codes

  • Instrumentation

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