Embedded fiber Bragg grating sensors for true temperature monitoring in Nb3Sn superconducting magnets for high energy physics

A. Chiuchiolo; H. Bajas; M. Bajko; M. Consales; M. Giordano; J. C. Perez; A. Cusano

doi:10.1117/12.2236646

30 May 2016 Embedded fiber Bragg grating sensors for true temperature monitoring in Nb₃Sn superconducting magnets for high energy physics

A. Chiuchiolo, H. Bajas, M. Bajko, M. Consales, M. Giordano, J. C. Perez, A. Cusano

Author Affiliations +

Proceedings Volume 9916, Sixth European Workshop on Optical Fibre Sensors; 99160A (2016) https://doi.org/10.1117/12.2236646
Event: Sixth European Workshop on Optical Fibre Sensors (EWOFS'2016), 2016, Limerick, Ireland

Abstract

The luminosity upgrade of the Large Hadron Collider (HL-LHC) planned at the European Organization for Nuclear Research (CERN) requires the development of a new generation of superconducting magnets based on Nb3Sn technology. The instrumentation required for the racetrack coils needs the development of reliable sensing systems able to monitor the magnet thermo-mechanical behavior during its service life, from the coil fabrication to the magnet operation. With this purpose, Fiber Bragg Grating (FBG) sensors have been embedded in the coils of the Short Model Coil (SMC) magnet fabricated at CERN. The FBG sensitivity to both temperature and strain required the development of a solution able to separate mechanical and temperature effects. This work presents for the first time a feasibility study devoted to the implementation of an embedded FBG sensor for the measurement of the "true" temperature in the impregnated Nb₃Sn coil during the fabrication process.

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A. Chiuchiolo, H. Bajas, M. Bajko, M. Consales, M. Giordano, J. C. Perez, and A. Cusano "Embedded fiber Bragg grating sensors for true temperature monitoring in Nb₃Sn superconducting magnets for high energy physics", Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 99160A (30 May 2016); https://doi.org/10.1117/12.2236646

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