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Innovative lab on fiber dosimeters for ionizing radiation monitoring at ultra-high doses
Author(s): Giuseppe Quero; Patrizio Vaiano Sr.; Francesco Fienga Sr.; Martino Giaquinto; Valentina Di Meo; Georgi Gorine; Pierluigi Casolaro; Luigi Campajola; Giovanni Breglio; Alessio Crescitelli; Emanuela Esposito; Armando Ricciardi; Antonello Cutolo; Federico Ravotti; Salvatore Buontempo; Marco Consales; Andrea Cusano
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Paper Abstract

We report on a innovative Lab on Fiber (LOF) dosimeter for ionizing radiation monitoring at ultra-high doses. The new dosimeter consists in a metallo-dielectric resonator at sub-wavelength scale supporting localized surface plasmon resonances realized on the optical fiber (OF) tip. The resonating structure involves two gold gratings separated by a templated dielectric layer of poly(methyl methacrylate) (PMMA). Two LOF prototypes have been manufactured and exposed, at the IRRAD Proton Facility at CERN in Geneva, to 23 GeV protons for a total fluence of 0.67x1016 protons/cm2 , corresponding to an absorbed dose of 1.8 MGy. Experimental data demonstrate the "radiation resistance" feature of the LOF devices and a clear dependence of the reflected spectrum on the total dose, expressed by a cumulative blue-shift of ~1.4 nm of the resonance combined with a slight increase of 0.16 dBm in the reflected spectrum. According to the numerical analysis and the literature, the main phenomenon induced by exposure to proton beam and able to explain the measured spectral behavior is the reduction of the PMMA thickness. Preliminary results demonstrated the potentiality of the proposed platform as dosimeter at MGy dose levels for High Energy Physics (HEP) experiments.

Paper Details

Date Published: 28 August 2019
PDF: 4 pages
Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111990I (28 August 2019); doi: 10.1117/12.2540323
Show Author Affiliations
Giuseppe Quero, Univ. degli Studi del Sannio (Italy)
Patrizio Vaiano Sr., Univ. degli Studi del Sannio (Italy)
Francesco Fienga Sr., Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Napoli (Italy)
Ecole Polytechnique Federale de Lausanne (Switzerland)
Martino Giaquinto, Univ. degli Studi del Sannio (Italy)
Valentina Di Meo, Istituto per la Microelettronica e Microsistemi (Italy)
Georgi Gorine, CERN - European Organization for Nuclear Research (Switzerland)
Ecole Polytechnique Federale de Lausanne (Switzerland)
Pierluigi Casolaro, Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Napoli (Italy)
Luigi Campajola, Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Napoli (Italy)
Univ. of Napoli Federico II (Italy)
Giovanni Breglio, Univ. degli Studi di Napoli Federico II (Italy)
Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Napoli (Italy)
European Organization for Nuclear Research (CERN) (Switzerland)
Alessio Crescitelli, Istituto per la Microelettronica e Microsistemi (Italy)
Emanuela Esposito, Istituto per la Microelettronica e Microsistemi (Italy)
Armando Ricciardi, Univ. degli Studi del Sannio (Italy)
Antonello Cutolo, Univ. degli Studi del Sannio (Italy)
Federico Ravotti, CERN - European Organization for Nuclear Research (Switzerland)
Salvatore Buontempo, Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Napoli (Italy)
European Organization for Nuclear Research (CERN) (Switzerland)
Marco Consales, Univ. degli Studi del Sannio (Italy)
Andrea Cusano, Univ. degli Studi del Sannio (Italy)


Published in SPIE Proceedings Vol. 11199:
Seventh European Workshop on Optical Fibre Sensors
Kyriacos Kalli; Sinead O. O'Keeffe; Gilberto Brambilla, Editor(s)

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