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001-es BibID:BIBFORM120407
035-os BibID:(WoS)000450189800007 (Scopus)85053603478
Első szerző:Abbaneo, D.
Cím:Operational Experience With the GEM Detector Assembly Lines for the CMS Forward Muon Upgrade / D. Abbaneo, M. Abbrescia, A. Ahmad, G. Bencze, N. Beni, G. Endroczi, A. Makovec, J. Molnar, Z. Szillasi, B. Ujvari
Dátum:2018
ISSN:0018-9499
Megjegyzések:The CMS Collaboration has been developing large-area triple-gas electron multiplier (GEM) detectors to be installed in the muon Endcap regions of the CMS experiment in 2019 to maintain forward muon trigger and tracking performance at the High-Luminosity upgrade of the Large Hadron Collider (LHC); 10 preproduction detectors were built at CERN to commission the first assembly line and the quality controls (QCs). These were installed in the CMS detector in early 2017 and participated in the 2017 LHC run. The collaboration has prepared several additional assembly and QC lines for distributed mass production of 160 GEM detectors at various sites worldwide. In 2017, these additional production sites have optimized construction techniques and QC procedures and validated them against common specifications by constructing additional preproduction detectors. Using the specific experience from one production site as an example, we discuss how the QCs make use of independent hardware and trained personnel to ensure fast and reliable production. Preliminary results on the construction status of CMS GEM detectors are presented with details of the assembly sites involvement.
Tárgyszavak:Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Gas detectors
Megjelenés:Ieee Transactions On Nuclear Science. - 65 : 11 (2018), p. 2808-2816. -
További szerzők:Abbrescia, M. Ahmad, A. (fizikus) Bencze G. (fizikus) Béni Noémi (1980-) (kísérleti fizikus) Endroczi G. (fizikus) Makovec Alajos (1987-) (fizikus) Molnár József (1954-) (villamosmérnök) Szillási Zoltán (1971-) (fizikus) Ujvári Balázs (1977-) (fizikus)
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2.

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
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3.

001-es BibID:BIBFORM069056
Első szerző:Esposito, Marco
Cím:Fiber Bragg Grating sensors to measure the coefficient of thermal expansion of polymers at cryogenic temperatures / Marco Esposito, Salvatore Buontempo, Angelo Petriccione, Mauro Zarrelli, Giovanni Breglio, Andrea Saccomanno, Zoltan Szillasi, Alajos Makovec, Andrea Cusano, Antonella Chiuchiolo, Marta Bajko, Michele Giordano
Dátum:2013
ISSN:0924-4247
Megjegyzések:One of the fundamental advantages in the employment of the Fiber Bragg Grating (FBG) sensors lies in their capability to allow measurements in extreme environmental conditions with also very high immunity toward external electromagnetic interference factors.The behavior of a polymer-coated FBG sensor, tested in cryogenic conditions at the laboratories of the European Organization for the Nuclear Research (CERN) in Geneva, has been analyzed and will be discussed in this paper. Magnets used in the Large Hadron Collider (LHC) for the High Energy Physics Researches at CERN need in fact extreme cooling conditions to preserve the internal superconductivity highly crucial for their performances. The magnets, built with NbTi based superconductors, are cooled with liquid helium and they operate at 1.9 K. The aim of the present work is to estimate the thermal expansion coefficient of two polymers based on epoxy and methacrylate (PMMA) used as coating of FBGs, in the temperature range from 4 K to 300 K and to check their suitability for the use in temperature monitoring of the superconducting magnets. A standard numerical derivative method has been employed to estimate thermal expansion coefficients; moreover the correlated fluctuation analysis (CFA) based procedure is proposed, as a reliable alternative, to overcome numerical derivative drawbacks at very low temperatures within the range of 4?20 K. The calculated values of thermal expansion coefficient for both systems are in agreement with literature data on similar material.
Tárgyszavak:Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Thermal expansion
Cryogenic temperature
Fiber optic sensor
FBG
Epoxy
PMMA
Megjelenés:Sensors and Actuators A-Physical 189 (2013), p. 195-203. -
További szerzők:Buontempo, Salvatore Petriccione, Angelo Zarrelli, Mauro Breglio, Giovanni Saccomanno, Andrea Szillási Zoltán (1971-) (fizikus) Makovec Alajos (1987-) (fizikus) Cusano, Andrea Chiuchiolo, Antonella Bajkó Márta Giordano, Michele
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4.

001-es BibID:BIBFORM062507
035-os BibID:(WoS)000373568100018 (Scopus)85041754163
Első szerző:Khachatryan, V.
Cím:Search for new phenomena in monophoton final states in proton-proton collisions at sqrt(s)=8 TeV / V. Khachatryan, Pálinkás József, Béni Noémi, Molnár József, Szillási Zoltán, Makovec Alajos, Raics Péter, Trócsányi Zoltán, The CMS Collaboration
Dátum:2016
ISSN:0370-2693
Megjegyzések:Results are presented from a search for new physics in final states containing a photon and missing transverse momentum. The data correspond to an integrated luminosity of 19.6 fb-1 collected in proton-proton collisions at sqrt(s)=TeV with the CMS experiment at the LHC. No deviation from the standard model predictions is observed for these final states. New, improved limits are set on dark matter production and on parameters of models with large extra dimensions. In particular, the first limits from the LHC on branon production are found and significantly extend previous limits from LEP and the Tevatron. An upper limit of 14.0 fb on the cross section is set at the 95% confidence level for events with a monophoton final state with photon transverse momentum greater than 145 GeV and missing transverse momentum greater than 140 GeV.
Tárgyszavak:Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
CMS
Dark matter
Monophoton
Physics
Megjelenés:Physics Letters B. - 755 (2016), p. 102-124. -
További szerzők:Pálinkás József (1952-) (fizikus) Béni Noémi (1980-) (kísérleti fizikus) Molnár József (1954-) (villamosmérnök) Szillási Zoltán (1971-) (fizikus) Makovec Alajos (1987-) (fizikus) Raics Péter (1944-) (fizikus) Trócsányi Zoltán (1961-) (fizikus) The CMS Collaboration
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5.

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
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6.

001-es BibID:BIBFORM048730
Első szerző:Makovec Alajos (fizikus)
Cím:Cryogenic temperature measurement using epoxy and PMMA coated fiber bragg grating sensors / Makovec A., Szillási Z., Béni N., Molnár J., Esposito M., Bountempo S., Cusano A., Oetriccione A., Zarrelli M., Breglio G., Saccomanno A., Giordano M., Chiuchiolo A.
Dátum:2012
ISSN:1789-6088
Tárgyszavak:Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény hazai lapban
Doktori iskola
Megjelenés:Acta Physica Debrecina. - 46 (2012), p. 97-106. -
További szerzők:Szillási Zoltán (1971-) (fizikus) Béni Noémi (1980-) (kísérleti fizikus) Molnár J. Esposito, Marco Bountempo, S. Cusano, Andrea Oetriccione, A. Zarrelli, Mauro Breglio, Giovanni Saccomanno, Andrea Giordano, Michele Chiuchiolo, Antonella
Pályázati támogatás:TÁMOP-4.2.2/B-10/1-2010-0024
TÁMOP
Fizikai Tudományok Doktori Iskola
81447
OTKA
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