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An Electron Beam Profile Instrument Based on FBGs

Along with the dose rate and the total irradiation dose measurements, the knowledge of the beam localization and the beam profile/energy distribution in the beam are parameters of interest for charged particle accelerator installations when they are used in scientific investigations, industrial appl...

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Autores principales: Sporea, Dan, Stăncălie, Andrei, Becherescu, Nicu, Becker, Martin, Rothhardt, Manfred
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4208145/
https://www.ncbi.nlm.nih.gov/pubmed/25157554
http://dx.doi.org/10.3390/s140915786
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author Sporea, Dan
Stăncălie, Andrei
Becherescu, Nicu
Becker, Martin
Rothhardt, Manfred
author_facet Sporea, Dan
Stăncălie, Andrei
Becherescu, Nicu
Becker, Martin
Rothhardt, Manfred
author_sort Sporea, Dan
collection PubMed
description Along with the dose rate and the total irradiation dose measurements, the knowledge of the beam localization and the beam profile/energy distribution in the beam are parameters of interest for charged particle accelerator installations when they are used in scientific investigations, industrial applications or medical treatments. The transverse profile of the beam, its position, its centroid location, and its focus or flatness depend on the instrument operating conditions or on the beam exit setup. Proof-of-concept of a new type of charged particle beam diagnostics based on fiber Bragg gratings (FBGs) was demonstrated. Its operating principle relies on the measurement of the peak wavelength changes for an array of FBG sensors as function of the temperature following the exposure to an electron beam. Periodically, the sensor irradiation is stopped and the FBG are force cooled to a reference temperature with which the temperature influencing each sensor during beam exposure is compared. Commercially available FBGs, and FBGs written in radiation resistant optical fibers, were tested under electron beam irradiation in order to study their possible use in this application.
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spelling pubmed-42081452014-10-24 An Electron Beam Profile Instrument Based on FBGs Sporea, Dan Stăncălie, Andrei Becherescu, Nicu Becker, Martin Rothhardt, Manfred Sensors (Basel) Article Along with the dose rate and the total irradiation dose measurements, the knowledge of the beam localization and the beam profile/energy distribution in the beam are parameters of interest for charged particle accelerator installations when they are used in scientific investigations, industrial applications or medical treatments. The transverse profile of the beam, its position, its centroid location, and its focus or flatness depend on the instrument operating conditions or on the beam exit setup. Proof-of-concept of a new type of charged particle beam diagnostics based on fiber Bragg gratings (FBGs) was demonstrated. Its operating principle relies on the measurement of the peak wavelength changes for an array of FBG sensors as function of the temperature following the exposure to an electron beam. Periodically, the sensor irradiation is stopped and the FBG are force cooled to a reference temperature with which the temperature influencing each sensor during beam exposure is compared. Commercially available FBGs, and FBGs written in radiation resistant optical fibers, were tested under electron beam irradiation in order to study their possible use in this application. MDPI 2014-08-25 /pmc/articles/PMC4208145/ /pubmed/25157554 http://dx.doi.org/10.3390/s140915786 Text en © 2014 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Sporea, Dan
Stăncălie, Andrei
Becherescu, Nicu
Becker, Martin
Rothhardt, Manfred
An Electron Beam Profile Instrument Based on FBGs
title An Electron Beam Profile Instrument Based on FBGs
title_full An Electron Beam Profile Instrument Based on FBGs
title_fullStr An Electron Beam Profile Instrument Based on FBGs
title_full_unstemmed An Electron Beam Profile Instrument Based on FBGs
title_short An Electron Beam Profile Instrument Based on FBGs
title_sort electron beam profile instrument based on fbgs
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4208145/
https://www.ncbi.nlm.nih.gov/pubmed/25157554
http://dx.doi.org/10.3390/s140915786
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