A dedicated system for in situ testing of gamma ray induced optical absorption and emission in optical materials.
| Autor: | Malo M; Laboratorio Nacional de Fusion, CIEMAT, Avda. Complutense 40, Madrid, Spain., García-Cortés I; Laboratorio Nacional de Fusion, CIEMAT, Avda. Complutense 40, Madrid, Spain., Muñoz P; Laboratorio Nacional de Fusion, CIEMAT, Avda. Complutense 40, Madrid, Spain., Moroño A; Laboratorio Nacional de Fusion, CIEMAT, Avda. Complutense 40, Madrid, Spain., Hodgson ER; Laboratorio Nacional de Fusion, CIEMAT, Avda. Complutense 40, Madrid, Spain. |
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| Jazyk: | angličtina |
| Zdroj: | The Review of scientific instruments [Rev Sci Instrum] 2018 Jun; Vol. 89 (6), pp. 065109. |
| DOI: | 10.1063/1.5024990 |
| Abstrakt: | Serious radiation damage due to the high energy neutron/gamma fluxes is expected for optical materials such as scintillators, windows, and lenses which will be part of the plasma diagnostics in future fusion devices. Radiation induced absorption represents a major concern for these components for which experimental validation under as near as possible reactor conditions becomes essential. A new experimental system has been developed at the CIEMAT Nayade 60 Co gamma irradiation facility for in situ radiation induced optical absorption measurements, covering a spectral range between 370 and 730 nm. This setup consists in a rotating sample holder which allows one to collect incident light (reference signal) and transmitted light through the material to be tested as a function of irradiation dose. This is an advanced and robust system which overcomes the important experimental difficulties that radiation involves providing a valuable testing capability for transmission components and scintillators under realistic fusion conditions. A detailed description of the experimental arrangement, together with preliminary tests carried out for system validation is given in this paper. |
| Databáze: | MEDLINE |
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