Distributed Optical Fiber Radiation Sensing in a Mixed-Field Radiation Environment at CERN

In paper we present the results from distributed optical fiber radiation sensing measurements at the “Cern High energy AcceleRator Mixed field facility”, CHARM. The measurements have been carried out on a multimode (MM) radiation sensitive P-doped optical fiber. The distributed measurements have then been carried out by means of an Optical Time Domain Reflectometry (OTDR) system using different interrogation and acquisition parameters to understand their influence on the results. We demonstrate the possible localization of the total dose with meter scale spatial resolutions and dose resolution down to 10–15 Gy. The obtained distributed dose profiles are validated by the benchmark with RadFET dosimeters and appear very promising for high energy accelerators and physics experiments as well as for industrial applications.

[1]  E. J. Friebele,et al.  Optical fiber waveguides in radiation environments, II , 1984 .

[2]  Alessandro Masi,et al.  The LHC Radiation Monitoring System - RadMon , 2012 .

[3]  P. Paillet,et al.  Radiation Response of Ce-Codoped Germanosilicate and Phosphosilicate Optical Fibers , 2016, IEEE Transactions on Nuclear Science.

[4]  J. Mekki,et al.  Distributed Optical Fiber Radiation Sensing at CERN High Energy AcceleRator Mixed Field Facility (CHARM) , 2015, 2015 15th European Conference on Radiation and Its Effects on Components and Systems (RADECS).

[5]  H. Henschel,et al.  Fiber Optic Radiation Sensing Systems for TESLA , 2000 .

[6]  E. Friebele,et al.  Photobleaching effects in optical fiber waveguides. , 1981, Applied optics.

[7]  Alessandro Signorini,et al.  Raman Distributed Temperature Sensing at CERN , 2015, IEEE Photonics Technology Letters.

[8]  E. J. Friebele,et al.  Fundamental defect centers in glass: Electron spin resonance and optical absorption studies of irradiated phosphorus‐doped silica glass and optical fibers , 1983 .

[9]  U. Weinand,et al.  Quality Assurance for Irradiation Tests of Optical Fibers: Uncertainty and Reproducibility , 2009, IEEE Transactions on Nuclear Science.

[10]  Kenneth T. V. Grattan,et al.  Fiber optic sensor technology: an overview , 2000 .

[11]  G. Kuyt,et al.  Low-Dose Radiation-Induced Attenuation at InfraRed Wavelengths for P-Doped, Ge-Doped and Pure Silica-Core Optical Fibres , 2007, IEEE Transactions on Nuclear Science.

[12]  F. Di Pasquale,et al.  First steps towards a distributed optical fiber radiation sensing system , 2017, International Conference on Space Optics.

[13]  Youcef Ouerdane,et al.  Feasibility of radiation dosimetry with phosphorus-doped optical fibers in the ultraviolet and visible domain , 2011 .

[14]  A. L. Tomashuk,et al.  Fiber-optic dosimeter based on radiation-induced attenuation in P-doped fiber: suppression of post-irradiation fading by using two working wavelengths in visible range. , 2014, Optics express.

[15]  J. Mekki,et al.  CHARM: A Mixed Field Facility at CERN for Radiation Tests in Ground, Atmospheric, Space and Accelerator Representative Environments , 2016, IEEE Transactions on Nuclear Science.

[16]  P. Paillet,et al.  On-site Regeneration Technique for Hole-Assisted Optical Fibers Used In Nuclear Facilities , 2015, IEEE Transactions on Nuclear Science.

[17]  S. Girard,et al.  Radiation Effects on Silica-Based Optical Fibers: Recent Advances and Future Challenges , 2013, IEEE Transactions on Nuclear Science.