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Cryogenic-temperature profiling of high-power superconducting lines using local and distributed optical-fiber sensors
/ Chiuchiolo, Antonella (Sannio U. ; CERN) ; Palmieri, Luca (Sannio U. ; Padua U.) ; Consales, Marco (Sannio U.) ; Giordano, Michele (CNR, Portici) ; Borriello, Anna (CNR, Portici) ; Bajas, Hugues (CERN) ; Galtarossa, Andrea (Padua U.) ; Bajko, Marta (CERN) ; Cusano, Andrea (Sannio U.)
This contribution presents distributed and multi-point fiber-optic monitoring of cryogenic temperatures along a superconducting power transmission line down to 30 K and over 20 m distance. Multi-point measurements were conducted using fiber Bragg gratings sensors coated with two different functional overlays (epoxy and PMMA) demonstrating cryogenic operation in the range 300 – 4.2 K. [...]
CERN-ACC-2015-0219.-
Geneva : CERN, 2015
- Published in : Optics Letters 40 (2015) 4424-4427
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Cryogenic temperature monitoring in superconducting power transmission line at CERN with hybrid multi-point and distributed fiber optic sensors
/ Chiuchiolo, A (Sannio U.) ; Palmieri, L (Padua U.) ; Consales, M (Sannio U.) ; Giordano, M (CNR, Italy) ; Bajas, H (CERN) ; Galtarossa, A (Padua U.) ; Bajko, M (CERN) ; Cusano, A (Sannio U.)
Distributed and multi-point fiber-optic based measurements of cryogenic temperature down to 30 K are presented. Measurements have been performed along the cryostat of a superconducting power transmission line, which is currently being tested at CERN over a length of about 20 m. [...]
2015 - 4 p.
- Published in : Proc. SPIE 9634 (2015) 96341U
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Fiber Optic Cryogenic Sensors for Superconducting Magnets and Superconducting Power Transmission lines at CERN
/ Chiuchiolo, A (Sannio U.) ; Consales, M (Sannio U.) ; Cusano, A (Sannio U.) ; Bajko, M (CERN) ; Perez, J C (CERN) ; Bajas, H (CERN) ; Giordano, M (ICBM, CNR, Portici) ; Breglio, G (U. Naples (main)) ; Palmieri, L (U. Padua (main))
The design, fabrication and tests of a new generation of superconducting magnets for the upgrade of the LHC require the support of an adequate, robust and reliable sensing technology. The use of Fiber Optic Sensors is becoming particularly challenging for applications in extreme harsh environments such as ultra-low temperatures, high electromagnetic fields and strong mechanical stresses offering perspectives for the development of technological innovations in several applied disciplines..
CERN-ACC-2014-0308.-
Geneva : CERN, 2014
- Published in : SPIE. Digital Library: 9286
- Published in : Proc. SPIE: 9286 (2014) , pp. 92864B
Fulltext: PDF;
In : 2nd International Conference on Applications of Optics and Photonics, Aveiro, Portugal, 26 - 30 May 2014, pp.92864B
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Fiber Bragg Grating Cryo-Sensors for Superconducting Accelerator Magnets
/ Chiuchiolo, A (Sannio U.) ; Bajko, M (CERN) ; Perez, J (CERN) ; Bajas, H (CERN) ; Consales, M (Sannio U.) ; Giordano, M (CNR, ICBM, Portici) ; Breglio, G (Naples U., Ist. Elettrotecnica) ; Cusano, A (Sannio U.)
The design, fabrication and tests of the new generation of superconducting magnets for the High Luminosity upgrade of the Large Hadron Collider (HL - LHC) require the support of an adequate sensing technology able to assure the integrity of the strain sensitive and brittle superconducting cables through the whole service life of the magnet: assembly up to 150 MPa, cool down to 1.9 K and powering up to about 16 kA. [...]
CERN-ACC-2014-0311.
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2014. - 11 p.
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Cryogenic test facility instrumentation with fiber optic and fiber optic sensors for testing superconducting accelerator magnets
/ Chiuchiolo, A (CERN) ; Bajas, H (CERN) ; Bajko, M (CERN) ; Castaldo, B (CERN ; U. Naples (main)) ; Consales, M (Sannio U.) ; Cusano, A (Sannio U.) ; Giordano, M (IPCB CNR, Portici) ; Giloux, C (CERN) ; Perez, J C (CERN) ; Sansone, L (IPCB CNR, Portici) et al.
The magnets for the next steps in accelerator physics, such as the High Luminosity upgrade of the LHC (HL- LHC) and the Future Circular Collider (FCC), require the development of new technologies for manufacturing and monitoring. To meet the HL-LHC new requirements, a large upgrade of the CERN SM18 cryogenic test facilities is ongoing with the implementation of new cryostats and cryogenic instrumentation. [...]
2017 - 8 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng. 278 (2017) 012082
Fulltext: PDF;
In : 2017 Cryogenic Engineering Conference and International Cryogenic Materials Conference, Madison, WI, USA, 9 - 13 Jul 2017, pp.012082
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Fiber Bragg Grating Sensor as Valuable Technological Platform for New Generation of Superconducting Magnets
/ Chiuchiolo, A (Sannio U. ; CERN) ; Consales, M (Sannio U.) ; Cusano, A (Sannio U.) ; Bajko, M (CERN) ; Perez, J C (CERN) ; Bajas, H (CERN) ; Viret, P (CERN) ; Giordano, M (ICBM, CNR, Portici) ; Breglio, G (U. Naples (main))
New generation of superconducting magnets for high energy applications designed, manufactured and tested at the European Organization for Nuclear Research (CERN) require the implementation of reliable sensors able to monitor the mechanical stresses affecting the winding from fabrication to operation in magnetic field of 13 T. This work deals with the embedding of Fiber Bragg Grating sensors in a short model Nb$_{3}$Sn dipole magnet in order to monitor the strain developed in the coil during the cool down to 1.9 K, the powering up to 15.8 kA and the warm up, offering perspectives for the replacement of standard strain gauges..
CERN-ACC-2014-0309.-
Geneva : CERN, 2014
- Published in : Proc. SPIE 9157 (2014) 91579I
Fulltext: PDF;
In : 23rd International Conference on Optical Fibre Sensors, Santander, Spain, 2 - 6 Jun 2014, pp.91579I
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Fiber Bragg Grating Sensors Based Monitoring System for Superconducting Accelerator Magnets
/ Chiuchiolo, A (Sannio U. ; CERN) ; Bajko, M (CERN) ; Perez, J C (CERN) ; Bajas, H (CERN) ; Consales, M (Sannio U.) ; Giordano, M (CNR, ICBM, Portici) ; Breglio, G (Naples U., Ist. Elettrotecnica) ; Cusano, A (Sannio U.)
New generation of accelerator magnets for high energy applications currently designed, manufactured and tested at the European Organization for Nuclear Research (CERN) require the implementation of precise cryogenic sensors with long-term robustness and reliability able to withstand cryogenic temperature and to monitor the mechanical stresses affecting the winding during all the stages of his service life, assembly, cool down and powering. Monitoring the mechanical behavior of the magnet from assembly to operation is a critical task which aims to assure the integrity of the magnet and to safely handle the coils made of new brittle material. [...]
CERN-ACC-2014-0312.-
Geneva : CERN, 2014
Fulltext: PDF;
In : 3rd Mediterranean Photonics Conference, Trani, Italy, 7 - 9 May 2014, pp.1-3
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Structural Health Monitoring of Superconducting Magnets at CERN Using Fiber Bragg Grating Sensors
/ Chiuchiolo, A (Sannio U. ; CERN) ; Bajko, M (CERN) ; Perez, J C (CERN) ; Bajas, H (CERN) ; Guinchard, M (CERN) ; Giordano, M (CNR, ICBM, Portici) ; Breglio, G (Naples U., Ist. Elettrotecnica) ; Consales, M (Sannio U.) ; Cusano, A (Sannio U.)
The use of Fiber Bragg Grating sensors is becoming particularly challenging for monitoring different parameters in extreme operative conditions such as ultra-low temperatures, high electromagnetic fields and strong mechanical stresses. [...]
CERN-ACC-2014-0310.
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2014.
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Fiber optic humidity sensors for high-energy physics applications at CERN
/ Consales, M (Sannio U.) ; Buosciolo, A (Institute for Composite and Biomedical Materials, CNR, Portici) ; Cutolo, A (Sannio U.) ; Breglio, G (U. Naples (main)) ; Irace, A (U. Naples (main)) ; Buontempo, S (INFN, Naples) ; Petagna, P (CERN) ; Giordano, M (Institute for Composite and Biomedical Materials, CNR, Portici) ; Cusano, A (Sannio U.)
This work is devoted to a feasibility analysis for the development of novel fiber optic humidity sensors to be applied in high-energy physics (HEP) applications and in particular in experiments actually running at the European Organization for Nuclear Research (CERN). On this line of argument and due to the wide investigations carried out in the last years aimed to assess the radiation hardness capability of fiber optic technology in high energy physics environments, our multidisciplinary research group has been recently engaged in the development of near-field fiber optic sensors based on particle layers of tin dioxide to perform the monitoring of low values of relative humidity RH even at low temperatures.
While this sensor type has been successfully employed for ppm and sub-ppm chemical detection in air and water environments, it is the first reported use for relative humidity measurements.
The RH sensing performance of fabricated probes was analyzed during a deep experimental campaign carried out in the laboratories of CERN, in Genève. [...]
2011 - 9 p.
- Published in : Sens. Actuators B 159 (2011) 66-74
External link: Fulltext
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