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001-es BibID:	BIBFORM069043
035-os BibID:	(cikkazonosító)P03007 (WoS)000375746200070 (Scopus)84964322275
Első szerző:	Berruti, Gaia Maria
Cím:	One year of FBG-based thermo-hygrometers in operation in the CMS experiment at CERN / Gaia Maria Berruti, Paolo Petagna, Salvatore Buontempo, Alajos Makovec, Zoltan Szillasi, Noemi Beni, Marco Consales, Andrea Cusano
Dátum:	2016
ISSN:	1748-0221
Megjegyzések:	In this contribution we present results concerning the very first application of fiber optic sensors (FOSs) for relative humidity (RH) monitoring in high radiations environments. After a few years of investigations at CERN in Geneva, since December 2013 our multidisciplinary research group has successfully installed 72 thermo-hygrometers based on Fiber Bragg Grating (FBG) technology, organized in multi-points arrays, in cold areas of the Tracker Bulkhead of the Compact Muon Solenoid (CMS) experiment, where hundreds of electrical connectors are housed and thousands of services, including many cold pipes, cross the volumes through them. In such a complicated environment, a constant hygrometric monitoring is vital, in order to avoid dangerous phenomena of condensation. The collected results in the last year of operation of the proposed sensors are effective and reliable, with temperature, relative humidity and dew point temperature measurements from the FBG-based devices in full agreement with the readings of conventional sensors, temporarily present in the detector. However, experience in operation has shown some limitations of this technology, which are fully detailed in the last section of the paper.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Detector design and construction technologies and materials Interaction of radiation with matter Detector cooling and thermo-stabilization
Megjelenés:	Journal of Instrumentation. - 11 : 3 (2016), p. 1-17. -
További szerzők:	Petagna, Paolo Buontempo, Salvatore Makovec Alajos (1987-) (fizikus) Szillási Zoltán (1971-) (fizikus) Béni Noémi (1980-) (kísérleti fizikus) Consales, Marco Cusano, Andrea
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM069044
Első szerző:	Makovec Alajos (fizikus)
Cím:	Radiation hard polyimide-coated FBG optical sensors for relative humidity monitoring in the CMS experiment at CERN / A. Makovec, G. Berruti, M. Consales, M. Giordano, P. Petagna, S. Buontempo, G. Breglio, Z. Szillasi, N. Beni, A. Cusano
Dátum:	2014
ISSN:	1748-0221
Megjegyzések:	This work investigates the performance and the radiation hardness capability of optical thermo-hygrometers based on Fibre Bragg Gratings (FBG) for humidity monitoring in the Compact Muon Solenoid (CMS), one of the four experiments running at CERN in Geneva. A thorough campaign of characterization was performed on 80 specially produced Polyimide-coated RH FBG sensors and 80 commercial temperature FBG sensors. Sensitivity, repeatability and accuracy were studied on the whole batch, putting in evidence the limits of the sensors, but also showing that they can be used in very dry conditions. In order to extract the humidity measurements from the sensor readings, commercial temperature FBG sensors were characterized in the range of interest. Irradiation campaigns with ionizing radiation (?-rays from a Co60 source) at incremental absorbed doses (up to 210 kGy for the T sensors and up to 90 kGy for the RH sensors) were performed on sample of T and RH-Sensors. The results show that the sensitivity of the sensors is unchanged up to the level attained of the absorbed dose, while the natural wavelength peak of each sensor exhibits a radiation-induced shift (signal offset). The saturation properties of this shift are discussed.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban Detector design and construction technologies and materials Interaction of radiation with matter Detector cooling and thermo-stabilization
Megjelenés:	Journal of Instrumentation. - 9 : 03 (2014), p. C03040 (1-10). -
További szerzők:	Berruti, Gaia Maria Consales, Marco Giordano, Michele Petagna, Paolo Buontempo, Salvatore Breglio, Giovanni Szillási Zoltán (1971-) (fizikus) Béni Noémi (1980-) (kísérleti fizikus) Cusano, Andrea
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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