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FP7

Experimental developments towards an ITER thermography diagnostic

Funded under: FP7-EURATOM

Abstract

In the course of the development of a concept for a spectrally resolving thermography diagnostic for the ITER divertor using optical fibres experimental development work has been carried out in three different areas. Firstly ZrF(4) fibres and hollow fibres (silica capillaries with internal AG/AgJ coating) were tested in a Co{60} irradiation facility under gamma irradiation up to doses of 5 kGy and 27 kGy, respectively. The ZrF(4) fibres suffered more radiation induced degradation (>1 db/m) then the hollow fibres (0-0.4 db/m). Secondly multi-colour pyroreflectometry is being developed towards tokamak applicability. The emissivity and temperature of tungsten samples were measured in the range of 700-1500°C. The angular working range for off normal observation of the method was 20-30°. The working distance of the method has been increased from cm to the m range. Finally, encouraging preliminary results have been obtained concerning the application of pulsed and modulated active thermography.

Additional information

Authors: ESCOURBIAC F, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);GARDAREIN J L, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);JOUVE M, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);POCHEAU C, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);BRICHARD B, SCK�CEN, EURATOM Association Belgium, Mol (BE);VAN IERSCHOT S, SCK�CEN, EURATOM Association Belgium, Mol (BE);OOMS H, SCK�CEN, EURATOM Association Belgium, Mol (BE);BERGHMANS F, SCK�CEN, EURATOM Association Belgium, Mol (BE);DECRÉTON M, SCK�CEN, EURATOM Association Belgium, Mol (BE);BADIE J M, PROMES CNRS 8521, Font Romeu (FR);SANS J L, PROMES CNRS 8521, Font Romeu (FR);LE NILIOT C, IUSTI UMR CNRS 65 95, Uni. de Provence, Marseille (FR);RIGOLLET F, IUSTI UMR CNRS 65 95, Uni. de Provence, Marseille (FR);MARTINEZ S, IUSTI UMR CNRS 65 95, Uni. de Provence, Marseille (FR);SERRA J J, DGA/DET/CEP/LOT/EHF, Font Romeu (FR);SCHEER E, DGA/DET/CEP/LOT/EHF, Font Romeu (FR);RAUBER X, ENSAM, Aix-en-Provence (FR);REICHLE R, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: An article published in: Journal of Nuclear Materials, Volumes 363-365 (2007), pp. 1466-1471
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://dx.doi.org/doi:10.1016/j.jnucmat.2007.01.207
Record Number: 200719347 / Last updated on: 2007-09-06
Original language: en
Available languages: en