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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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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;
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Raman distributed temperature measurement at CERN high energy accelerator mixed field radiation test facility (CHARM)
/ Toccafondo, Iacopo ; Nannipieri, Tiziano ; Signorini, Alessandro ; Guillermain, Elisa (CERN) ; Kuhnhenn, Jochen (Fraunhofer Inst., Euskirchen) ; Brugger, Markus (CERN) ; Pasquale, Fabrizio Di
In this paper we present a validation of distributed Raman temperature sensing (RDTS) at the CERN high energy accelerator mixed field radiation test facility (CHARM), newly developed in order to qualify electronics for the challenging radiation environment of accelerators and connected high energy physics experiments. By investigating the effect of wavelength dependent radiation induced absorption (RIA) on the Raman Stokes and anti-Stokes light components in radiation tolerant Ge-doped multi-mode (MM) graded-index optical fibers, we demonstrate that Raman DTS used in loop configuration is robust to harsh environments in which the fiber is exposed to a mixed radiation field. [...]
2015 - 4 p.
- Published in : Proc. SPIE 9634 (2015) 963446
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OMTF firmware overview
/ Byszuk, Adrian (Warsaw U. of Tech.) ; Pozniak, Krzysztof (Warsaw U. of Tech.) ; Zabołotny, Wojciech M (Warsaw U. of Tech.) ; Bunkowski, Karol (Warsaw U. (main)) ; Bluj, Michał (NCBJ, Swierk) ; Doroba, Krzysztof (Warsaw U. (main)) ; Drabik, Paweł (Warsaw U. of Tech.) ; Górski, Maciej (NCBJ, Swierk) ; Kalinowski, Artur (Warsaw U. (main)) ; Kierzkowski, Krzysztof (Warsaw U. (main)) et al.
This paper describes firmware architecture of a new part of muon trigger system of the CMS detector – one of four detectors installed along LHC accelerator in CERN. Overlap Muon Track Finder (OMTF) is a new trigger subsystem designed to work in difficult barrel-endcap region of CMS detector. [...]
2015 - 6 p.
- Published in : Proc. SPIE 9662 (2015) 966241
In : Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2015, Wilga, Poland, 25 May 2015, pp.966241
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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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Experimental verification of the HERD prototype at CERN SPS
/ Dong, Yongwei (Key Laboratory of Particle Astrophysics) ; Quan, Zheng (Beijing, Inst. High Energy Phys.) ; Wang, Junjing (Beijing, Inst. High Energy Phys.) ; Xu, Ming (Key Laboratory of Particle Astrophysics) ; Albergo, Sebastiano (INFN, Italy) ; Ambroglini, Filippo (INFN, Italy) ; Ambrosi, Giovanni (INFN, Italy) ; Azzarello, Philipp (Geneva U.) ; Bai, Yonglin (Xian Inst. Optics, Precision Mech.) ; Bao, Tianwei (Key Laboratory of Particle Astrophysics) et al.
The High Energy cosmic-Radiation Detection (HERD) facility is one of several space astronomy payloads of the cosmic light house program onboard China's Space Station, which is planned for operation starting around 2020 for about 10 years. Beam test with a HERD prototype, to verify the HERD specifications and the reading out method of wavelength shifting fiber and image intensified CCD, was taken at CERN SPS in November, 2015. [...]
2016 - 8 p.
- Published in : Proc. SPIE 9905 (2016) 99056D
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