Author :
Currás, E. ; Virto, A.L. ; Moya, D. ; Vila, I. ; Carrión, J.G. ; Frövel, M. ; García-López, J. ; Jiménez, M.C. ; Morilla, Y. ; Palomo, F.R.
Abstract :
We report on the effect of the fiber coating on the radiation sensitivity of Fiber Bragg Gratings (FBG). For the first time this type of study has been carried out using a 13.5 MeV proton beam up to a fluence of
protons/cm
(total absorbed dose of 15 MGy). We observed a clear dependence of the radiation sensitivity on the coating, in particular, we have investigated the irradiation induced changes on the strain sensitivity; FBG strain coefficient remains stable for all the fiber within a 5%. This result demonstrates the suitability of FBGs as structural health and deformation monitors in the very hostile environment of the new generation of high-intensity particle physics proton colliders.