@book{7abae3a29df14e9f9821e2ac19495e0d,
title = "EU/RF collaborative tasks on ITER diagnostics – EU Contribution to Optical Fibre Development - Revision 1",
abstract = "Hydrogen-loading is a powerful method to protect optical fibres against darkening in a large range of irradiation conditions [8]. Taking into account that all the irradiation tests are accelerated, i.e. involving high dose-rate conditions, and knowing that high dose-rates induce more RIA degradation in the fibres, we can infer that all our radiation tests are conservative and that hydrogen-loaded fibres can withstand the ITER radiation field to a large extent. The major difficulty is now in the technological fabrication of hydrogenated large-core fibre bundles. Such fabrication has not been demonstrated yet. Endlessly ultimate radiation resistance in fibres could be thinkable by feeding the fibres constantly with a small amount of hydrogen. The approach could be envisaged using microstructured fibres containing air holes (porous medium) enhancing greatly and in-situ the hydrogen diffusion. Such an idea was demonstrated in a short BR2 irradiation test and already reported in the EFDA documentation.",
keywords = "fusion, ITER, EFDA, fibre optics, hydrogen-loading, irradiation, radiation tests, RIA, degradation, fibres",
author = "Beno{\^i}t Brichard and Vincent Massaut",
note = "Score = 2",
year = "2010",
month = oct,
language = "English",
series = "SCK•CEN Reports",
publisher = "SCK CEN",
number = "ER-168-rev-1",
address = "Belgium",
edition = "1",
}