Radiation induced absorption of hydrogen-loaded pure silica optical fibers with carbon coating for ITER diagnostics

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Radiation induced absorption of hydrogen-loaded pure silica optical fibers with carbon coating for ITER diagnostics. / Goussarov, Andrei; Vukolov, Konstantin; Orlovskiy, Ilya; Andreenko, Evgeniy N.

In: fusion engineering and design, Vol. 151, 111356, 02.02.2020.

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Goussarov, Andrei ; Vukolov, Konstantin ; Orlovskiy, Ilya ; Andreenko, Evgeniy N. / Radiation induced absorption of hydrogen-loaded pure silica optical fibers with carbon coating for ITER diagnostics. In: fusion engineering and design. 2020 ; Vol. 151.

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@article{48d8577dda6e4344946c6af91631e23d,
title = "Radiation induced absorption of hydrogen-loaded pure silica optical fibers with carbon coating for ITER diagnostics",
abstract = "We present results of gamma irradiation tests of 200 μm pure silica core optical fibers with a low and high-OH concentration, with and without hydrogen loading. All the fibers were manufactured by a candidate supplier of the fiber bundles for optical plasma diagnostics in ITER. The hydrogen-loaded fibers were stored for a one year before the irradiation start. The fibers were exposed at two Co-60 gamma facilities using dose-rates of 15 and 194 mGy/s up to 15 and 70 kGy absorbed doses, respectively. The optical transmission losses of the fibers were measured in-situ in the spectral range of 450–900 nm. The results are interpreted on the basis of available data on radiation defects in silica core fibers. It is demonstrated that hydrogen loading provides a radiation hardness improvement, which allows to satisfy the ITER requirements.",
keywords = "ITER, plasma diagnostics, Optical fibers, Radiation induced attenuation, Radiation defects, Hydroge loading",
author = "Andrei Goussarov and Konstantin Vukolov and Ilya Orlovskiy and Andreenko, {Evgeniy N.}",
note = "Score=10",
year = "2020",
month = "2",
day = "2",
doi = "10.1016/j.fusengdes.2019.111356",
language = "English",
volume = "151",
journal = "Fusion Engineering & Design",
issn = "0920-3796",
publisher = "Elsevier",

}

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TY - JOUR

T1 - Radiation induced absorption of hydrogen-loaded pure silica optical fibers with carbon coating for ITER diagnostics

AU - Goussarov, Andrei

AU - Vukolov, Konstantin

AU - Orlovskiy, Ilya

AU - Andreenko, Evgeniy N.

N1 - Score=10

PY - 2020/2/2

Y1 - 2020/2/2

N2 - We present results of gamma irradiation tests of 200 μm pure silica core optical fibers with a low and high-OH concentration, with and without hydrogen loading. All the fibers were manufactured by a candidate supplier of the fiber bundles for optical plasma diagnostics in ITER. The hydrogen-loaded fibers were stored for a one year before the irradiation start. The fibers were exposed at two Co-60 gamma facilities using dose-rates of 15 and 194 mGy/s up to 15 and 70 kGy absorbed doses, respectively. The optical transmission losses of the fibers were measured in-situ in the spectral range of 450–900 nm. The results are interpreted on the basis of available data on radiation defects in silica core fibers. It is demonstrated that hydrogen loading provides a radiation hardness improvement, which allows to satisfy the ITER requirements.

AB - We present results of gamma irradiation tests of 200 μm pure silica core optical fibers with a low and high-OH concentration, with and without hydrogen loading. All the fibers were manufactured by a candidate supplier of the fiber bundles for optical plasma diagnostics in ITER. The hydrogen-loaded fibers were stored for a one year before the irradiation start. The fibers were exposed at two Co-60 gamma facilities using dose-rates of 15 and 194 mGy/s up to 15 and 70 kGy absorbed doses, respectively. The optical transmission losses of the fibers were measured in-situ in the spectral range of 450–900 nm. The results are interpreted on the basis of available data on radiation defects in silica core fibers. It is demonstrated that hydrogen loading provides a radiation hardness improvement, which allows to satisfy the ITER requirements.

KW - ITER

KW - plasma diagnostics

KW - Optical fibers

KW - Radiation induced attenuation

KW - Radiation defects

KW - Hydroge loading

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/36028882

U2 - 10.1016/j.fusengdes.2019.111356

DO - 10.1016/j.fusengdes.2019.111356

M3 - Article

VL - 151

JO - Fusion Engineering & Design

JF - Fusion Engineering & Design

SN - 0920-3796

M1 - 111356

ER -

ID: 5707898