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CERN Document Server 找到 5 筆記錄  檢索需時 1.01 秒. 
1.
Machine Learning Estimation of the Phase at the Fading Points of an OFDR-Based Distributed Sensor / Aitkulov, Arman (Padua U.) ; Marcon, Leonardo (CERN) ; Chiuso, Alessandro (Padua U.) ; Palmieri, Luca (Padua U.) ; Galtarossa, Andrea (Padua U.)
The paper reports a machine learning approach for estimating the phase in a distributed acoustic sensor implemented using optical frequency domain reflectometry, with enhanced robustness at the fading points. A neural network configuration was trained using a simulated set of optical signals that were modeled after the Rayleigh scattering pattern of a perturbed fiber. [...]
2023 - 11 p. - Published in : Sensors 23 (2023) 262 Fulltext: PDF;
2.
The Characterization of Optical Fibers for Distributed Cryogenic Temperature Monitoring / Marcon, Leonardo (CERN ; U. Padua (main)) ; Chiuchiolo, Antonella (Darmstadt, GSI) ; Castaldo, Bernardo (CERN) ; Bajas, Hugues (CERN) ; Galtarossa, Andrea (U. Padua (main)) ; Bajko, Marta (CERN) ; Palmieri, Luca (U. Padua (main))
Thanks to their characteristics, optical fiber sensors are an ideal solution for sensing applications at cryogenic temperatures, such as the monitoring of superconducting devices. Their applicability at such temperatures, however, is not immediate as optical fibers exhibit a non-linear thermal response which becomes rapidly negligible below 50 K. [...]
2022 - 13 p. - Published in : Sensors 22 (2022) 4009 Fulltext: PDF;
3.
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 Fulltext: PDF;
4.
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
5.
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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