Title of article
Broadband dielectric mirrors for optical diagnostics in ITER
Author/Authors
Orlovskiy، نويسنده , , Ilya and Andreenko، نويسنده , , Evgeny and Vukolov، نويسنده , , Konstantin and Mukhammedzyanov، نويسنده , , Timur and Tobengauz، نويسنده , , Alexander، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2013
Pages
4
From page
1284
To page
1287
Abstract
Specially designed multilayered dielectric mirrors are able to provide reflectivity over 95% in visible range and hence can help to improve the performance of optical diagnostics for use in ITER. Samples with TiO2/SiO2 and Nb2O5/SiO2 coatings were tested under heat loads following neutron irradiation to verify their resistance to ITER-relevant conditions. All samples survived the neutron irradiation. Reflectivity of TiO2/SiO2 samples degraded after heating, whereas Nb2O5/SiO2 samples showed no significant changes in all the tests. Additionally, influence of hydrocarbon contamination on samples reflectivity was experimentally examined. As a result, such an effect was found not to be significant, and Nb2O5/SiO2 coating is regarded to be acceptable for ITER applications.
Keywords
Optical diagnostics , Dielectric mirrors , ITER
Journal title
Fusion Engineering and Design
Serial Year
2013
Journal title
Fusion Engineering and Design
Record number
2361270
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