Fiber Bragg Grating sensors to measure the coefficient of thermal expansion of polymers at cryogenic temperatures

Marco Esposito, Salvatore Buontempo, Angelo Petriccione, Mauro Zarrelli, Giovanni Breglio, Andrea Saccomanno, Z. Szillási, Alajos Makovec, Andrea Cusano, Antonella Chiuchiolo, Marta Bajko, Michele Giordano

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

One of the fundamental advantages in the employment of the Fiber Bragg Grating (FBG) sensors lies in their capability to allow measurements in extreme environmental conditions with also very high immunity toward external electromagnetic interference factors. The behavior of a polymer-coated FBG sensor, tested in cryogenic conditions at the laboratories of the European Organization for the Nuclear Research (CERN) in Geneva, has been analyzed and will be discussed in this paper. Magnets used in the Large Hadron Collider (LHC) for the High Energy Physics Researches at CERN need in fact extreme cooling conditions to preserve the internal superconductivity highly crucial for their performances. The magnets, built with NbTi based superconductors, are cooled with liquid helium and they operate at 1.9 K. The aim of the present work is to estimate the thermal expansion coefficient of two polymers based on epoxy and methacrylate (PMMA) used as coating of FBGs, in the temperature range from 4 K to 300 K and to check their suitability for the use in temperature monitoring of the superconducting magnets. A standard numerical derivative method has been employed to estimate thermal expansion coefficients; moreover the correlated fluctuation analysis (CFA) based procedure is proposed, as a reliable alternative, to overcome numerical derivative drawbacks at very low temperatures within the range of 4-20 K. The calculated values of thermal expansion coefficient for both systems are in agreement with literature data on similar material.

Original languageEnglish
Pages (from-to)195-203
Number of pages9
JournalSensors and Actuators: A. Physical
Volume189
DOIs
Publication statusPublished - 2013

Fingerprint

Fiber Bragg gratings
cryogenic temperature
Cryogenics
Bragg gratings
Thermal expansion
thermal expansion
Polymers
Magnets
fibers
sensors
Sensors
polymers
magnets
coefficients
Derivatives
nuclear research
Helium
Methacrylates
electromagnetic interference
High energy physics

Keywords

  • Cryogenic temperature
  • Epoxy
  • FBG
  • Fiber optic sensor
  • PMMA
  • Thermal expansion

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Instrumentation

Cite this

Esposito, M., Buontempo, S., Petriccione, A., Zarrelli, M., Breglio, G., Saccomanno, A., ... Giordano, M. (2013). Fiber Bragg Grating sensors to measure the coefficient of thermal expansion of polymers at cryogenic temperatures. Sensors and Actuators: A. Physical, 189, 195-203. https://doi.org/10.1016/j.sna.2012.09.016

Fiber Bragg Grating sensors to measure the coefficient of thermal expansion of polymers at cryogenic temperatures. / Esposito, Marco; Buontempo, Salvatore; Petriccione, Angelo; Zarrelli, Mauro; Breglio, Giovanni; Saccomanno, Andrea; Szillási, Z.; Makovec, Alajos; Cusano, Andrea; Chiuchiolo, Antonella; Bajko, Marta; Giordano, Michele.

In: Sensors and Actuators: A. Physical, Vol. 189, 2013, p. 195-203.

Research output: Contribution to journalArticle

Esposito, M, Buontempo, S, Petriccione, A, Zarrelli, M, Breglio, G, Saccomanno, A, Szillási, Z, Makovec, A, Cusano, A, Chiuchiolo, A, Bajko, M & Giordano, M 2013, 'Fiber Bragg Grating sensors to measure the coefficient of thermal expansion of polymers at cryogenic temperatures', Sensors and Actuators: A. Physical, vol. 189, pp. 195-203. https://doi.org/10.1016/j.sna.2012.09.016
Esposito, Marco ; Buontempo, Salvatore ; Petriccione, Angelo ; Zarrelli, Mauro ; Breglio, Giovanni ; Saccomanno, Andrea ; Szillási, Z. ; Makovec, Alajos ; Cusano, Andrea ; Chiuchiolo, Antonella ; Bajko, Marta ; Giordano, Michele. / Fiber Bragg Grating sensors to measure the coefficient of thermal expansion of polymers at cryogenic temperatures. In: Sensors and Actuators: A. Physical. 2013 ; Vol. 189. pp. 195-203.
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