TY - JOUR
T1 - Long-Term Exposure of Fiber Bragg Gratings in the BR1 Low-Flux Nuclear Reactor
AU - Goussarov, Andrei
A2 - Schyns, Marc
N1 - Score = 10
PY - 2010/4
Y1 - 2010/4
N2 - We report the results of a long-term exposure of fiber
Bragg gratings in the BR1 low-flux nuclear reactor at SCK CEN
in Mol, Belgium. Gratings fabricated in the photosensitive and
the standard fibers were installed in February 2000 in a research
channel of the reactor and remained there until August
2008. During this time the reactor was operational 4690h so
that the gratings received a total thermal/fast neutron fluence
~16.9/1.47 x 1017 n/cm2, and a gamma-dose ~10 MGy. The
temperature cycled from 10 to 80 C. All the gratings were easily
detectable at the end of the experiment. After more than eight
years exposure the amplitude and the shape of the gratings spectra
remained unchanged for fibers devoid of hydrogen loading, while
FBGs fabricated using hydrogen loading did exhibit moderate
changes. The results show that fiber Bragg gratings indeed
have potential for long-term temperature monitoring in nuclear
installations.
AB - We report the results of a long-term exposure of fiber
Bragg gratings in the BR1 low-flux nuclear reactor at SCK CEN
in Mol, Belgium. Gratings fabricated in the photosensitive and
the standard fibers were installed in February 2000 in a research
channel of the reactor and remained there until August
2008. During this time the reactor was operational 4690h so
that the gratings received a total thermal/fast neutron fluence
~16.9/1.47 x 1017 n/cm2, and a gamma-dose ~10 MGy. The
temperature cycled from 10 to 80 C. All the gratings were easily
detectable at the end of the experiment. After more than eight
years exposure the amplitude and the shape of the gratings spectra
remained unchanged for fibers devoid of hydrogen loading, while
FBGs fabricated using hydrogen loading did exhibit moderate
changes. The results show that fiber Bragg gratings indeed
have potential for long-term temperature monitoring in nuclear
installations.
KW - Fiber Bragg gratings
KW - optical fiber nuclear radiation effects
KW - radiation-induced Bragg wavelength shift
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_111749
UR - http://knowledgecentre.sckcen.be/so2/bibref/7848
U2 - 10.1109/TNS.2010.2042614
DO - 10.1109/TNS.2010.2042614
M3 - Article
SN - 0018-9499
VL - 57
SP - 2044
EP - 2048
JO - IEEE transactions on nuclear Science
JF - IEEE transactions on nuclear Science
IS - 4
T2 - RADECS 2009
Y2 - 14 September 2009 through 18 September 2009
ER -