Journal of Physical Chemistry & Biophysics
Open Access
ISSN: 2161-0398
ISSN: 2161-0398
Dan Sporea
National Institute for Laser, Plasma and Radiation Physics, Romania
Scientific Tracks Abstracts: J Phys Chem Biophys
Optical fibre based sensors constitute an exciting alternative to classical optical and/or electric sensors as they provide several exceptional advantages: small dimensions; low mass and footprint; multiplexing capabilities (temporal, wavelength); immunity to various hazards (fire, explosions) and electromagnetic interferences; extended communication bandwidth; possibility to handle multi parameter distributed configurations with remote control. Of a special interest is the use of intrinsic or extrinsic optical fibre sensors under irradiation conditions, as their performances in such environments has to be evaluated in relation (i) to their radiation reliability (how well they keep their basic characteristics unaltered by the radiation-matter interaction) or (ii) to the way they can act as radiation detectors/monitors. As radiation detectors or monitors, optical fibre sensors found their use in niche application such as: Particle accelerators, synchrotron installations, free electron lasers for scientific or industrial purposes (as transducers for dose rate, total dose, beam losses, beam profiling, and reconstruction of charge particle tracks); neutron, gamma-ray, beta ray distributed dosimetry; water and soil contamination monitoring. In the medical field, optical fibre sensors were applied in the dosimetry of ionizing radiation; dosimetry in computed tomography; sterilization of instrumentation. This talk describes different types of optical fiber based sensors for radiation monitoring and dosimetry. In the introduction various radiation effects on optical fibers and optical fiber based sensors will be presented and compared. The parameters of interest for these sensors such as: Sensitivity to radiation; energy dependence; recovery/stability; dynamic range and linearity will be discussed. Our results on the use of such sensors (intrinsic or extrinsic) in medicine, particle accelerators or synchrotrons, nuclear waste management, and distributed radiation fields mapping will be introduced.
Dan Sporea received the MS degree in Electronics Engineering from “Politehnica” University, Bucharest, Romania, in 1972 and a PhD degree in Physics Engineering from the Institute for Atomic Physics, Romania, in 1992. He is currently heading the Laser Metrology and Standardization Laboratory, at the National Institute for Laser, Plasma and Radiation Physics (INFLPR), Magurele, Romania. For the last four years he acted as technical Deputy Director for a project focused on the development of a research infrastructure – the Center for Advanced Laser Technology, which includes a PW-class laser. He coordinated several research projects for the European Fusion Program and over 15 national projects related to laser metrology, radiation effects in devices and materials, optical fiber sensors for critical installations. He holds one American patent and over 20 Romanian patents. He co-authored several book chapters on optical information processing, optoelectronics, optical fiber and optical fiber sensors in radiation environments. He coordinated Romanian participation to intercomparisons projects organized by NIST, the Laser Centrum Hanover, and Physikalisch-Technische Bundesanstalt. His honors include among others the national patent award for an industrial equipment used in the evaluation of the quality of copper wire during the coating process. For more than six years he is the manager of the Center for Science Education and Training at INFLPR, educational center aiming to support science education at pre-university level.
Email: dan.sporea@inflpr.ro