CERN Accelerating science

Published Articles

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2020-03-27
06:00
A Bayesian framework to update scaling factors for radioactive waste characterization / Zaffora, Biagio (CERN) ; Demeyer, Severine (Unlisted, FR) ; Magistris, Matteo (CERN) ; Ronchetti, Elvezio (Geneva U.) ; Saporta, Gilbert (CNAM, Paris) ; Theis, Chris (CERN)
Nuclear power plants and research facilities commonly employ the so-called scaling factor (SF) method to quantify the activity of difficult-to-measure (DTM) radionuclides within their radioactive waste packages. The method relies on the establishment of a relationship between an easy-to-measure (ETM) radionuclide, called key nuclide (KN), and difficult-to-measure radionuclides, after the collection of a representative sample from the waste population. [...]
2020 - Published in : Appl. Radiat. Isot. 159 (2020) 109092

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2020-03-27
06:00
VVER Thermal Power Measured Using the Readings of Rhodium Self-powered Neutron Detector (SPND) / Kurchenkov, A Yu (Kurchatov Inst., Moscow) ; Kovel, A I (Kurchatov Inst., Moscow) ; Mil'to, V A (Kurchatov Inst., Moscow) ; Mil'to, N V (Kurchatov Inst., Moscow) ; Skorohodov, D N (Kurchatov Inst., Moscow) ; Lipin, N V (Kurchatov Inst., Moscow) ; Vorob'eva, D V (Kurchatov Inst., Moscow) ; Chapaev, V M (Unlisted, RU) ; Khvatov, V A (Unlisted, RU)
A procedure for determining the linear heat generation rate in a fuel assembly of VVER reactor at the location of a rhodium self-powered neutron detector (SPND) and verification of this procedure are discussed. A method of measurements of the VVER thermal power based on SPND readings is described..
2020 - 9 p. - Published in : Phys. At. Nucl. 82 (2020) 1117-1125

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2020-03-27
06:00
Implementation of Optical-Fiber Postmortem Dose Measurements: A Proof of Concept / Francesca, Diego Di (CERN) ; Kandemir, Keziban (CERN) ; Vecchi, Gaetano Li (CERN) ; Alia, Rubén Garcia (CERN) ; Kadi, Yacine (CERN) ; Brugger, Markus (CERN)
We describe the implementation of a versatile system and the corresponding method to perform fast postmortem optical attenuation measurements on irradiated optical-fibers (OFs) for dosimetry purposes. The measurement is based on the radiation-induced attenuation (RIA) phenomenon. [...]
2019 - 6 p. - Published in : IEEE Trans. Nucl. Sci. 67 (2019) 140-145

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2020-03-25
08:07
The Phase-2 ATLAS ITk pixel upgrade / Macchiolo, A (Munich, Max Planck Inst.) /ATLAS Collaboration
The new ATLAS ITk pixel system will be installed during the LHC Phase-2 shutdown, to better take advantage of the increased luminosity of the HL-LHC. The detector will consists of five layers of stave-like support structures in the most central region and ring-shaped supports in the endcap regions, covering out to |η| < 4. [...]
2020 - 4 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 962 (2020) 162261

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2020-03-25
08:07
Characterization of monolithic CMOS pixel sensor chip with ion beams for application in particle computed tomography / Tambave, G (Bergen U.) ; Alme, J (Bergen U.) ; Barnaföldi, G G (Wigner RCP, Budapest) ; Barthel, R (Utrecht U.) ; van den Brink, A (Utrecht U.) ; Brons, S (HITS, Heidelberg) ; Chaar, M (Bergen U.) ; Eikeland, V (Bergen U.) ; Genov, G (Bergen U.) ; Grøttvik, O (Bergen U.) et al.
Particle computed tomography (pCT) is an emerging imaging modality that promises to reduce range uncertainty in particle therapy. The Bergen pCT collaboration aims to develop a novel pCT prototype based on the ALPIDE monolithic CMOS sensor. [...]
2020 - 4 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 958 (2020) 162626
In : 15th Vienna Conference on Instrumentation, Vienna, Austria, 18 - 22 Feb 2019, pp.162626

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2020-03-25
08:07
Boundary-Element Methods for Field Reconstruction in Accelerator Magnets / Liebsch, Melvin (CERN) ; Russenschuck, Stephan (CERN) ; Kurz, Stefan (Darmstadt, Tech. U.)
Magnetic fields in the aperture of particle accelerator magnets can be represented by boundary potentials, exploiting Kirchhoff’s integral equation. Depending on the formulation, magnetic measurement data can be represented by the discrete approximations of Dirichlet or Neumann data at the domain boundary. [...]
2020 - 4 p. - Published in : IEEE Trans. Magn. 56 (2020) 7511104

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2020-03-25
08:07
3D-Printable Model of a Particle Trap: Development and Use in the Physics Classroom / McGinness, Lachlan (CERN ; Australian Natl. U., Canberra) ; Dührkoop, Susanne (CERN) ; Jansky, Alexandra (CERN ; Vienna U.) ; Keller, Oliver (CERN) ; Lorenz, Ankatrin (Freiburg U.) ; Schmeling, Sascha (CERN) ; Wendt, Klaus (Mainz U.) ; Woithe, Julia (CERN)
Quadrupole ion traps are modern and versatile research tools used in mass spectrometers, in atomic frequency and time standards, in trapped ion quantum computing research, and for trapping anti-hydrogen ions at CERN. Despite their educational potential, quadrupole ion traps are seldom introduced into the physics classroom not least because commercial quadrupole ion traps appropriate for classroom use are expensive and difficult to set up. [...]
2019 - 9 p. - Published in : 10.5334/joh.12

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2020-03-25
08:07
Research on mechanical properties of high-performance cable-in-conduit conductors with different design / Guo, Zichuan (Hefei, CUST ; Hefei, Inst. Plasma Phys.) ; Dai, Chao (Hefei, Inst. Plasma Phys.) ; Qin, Jinggang (Hefei, Inst. Plasma Phys.) ; Zhou, Chao (Hefei, Inst. Plasma Phys.) ; Li, Jiangang (Hefei, Inst. Plasma Phys.) ; Yu, Wu (Hefei, Inst. Plasma Phys.) ; Liu, Fang (Hefei, Inst. Plasma Phys.) ; Yang, Dongsheng (Hefei, Inst. Plasma Phys.) ; Huang, Chuanjun (Beijing, Tech. Inst. Phys. Chem.) ; Li, Laifeng (Beijing, Tech. Inst. Phys. Chem.) et al.
The China Fusion Engineering Test Reactor (CFETR) is a new tokamak fusion reactor under preliminary design, where the toroidal field (TF) coil has been designed to create a magnetic field of over 14.3 T. The TF conductors need to operate stably at 14.3 T, requiring the exclusion of conductor performance degradation from thermal and electromagnetic loading as much as possible. [...]
2020 - 13 p. - Published in : Supercond. Sci. Technol. 33 (2020) 045002

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2020-03-25
08:07
Application of Machine Learning to Beam Diagnostics / Fol, Elena (CERN ; Frankfurt U.) ; Coello de Portugal, Jaime Maria (PSI, Villigen) ; Franchetti, Giuliano (Darmstadt, GSI ; Frankfurt U.) ; Tomás, Rogelio (CERN)
Machine Learning (ML) techniques are widely used in science and industry to discover relevant information and make predictions from data. The application ranges from face recognition to High Energy Physics experiments. [...]
2019 - 7 p. - Published in : 10.18429/JACoW-FEL2019-WEB03
In : 39th International Free Electron Laser Conference, Hamburg, Germany, 26 - 30 Aug 2019, pp.311-317

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2020-03-25
08:07
Transient and Steady-State Radiation Response of Phosphosilicate Optical Fibers: Influence of H2 Loading / Girard, S (St. Etienne U.) ; Michele, V De (St. Etienne U.) ; Alessi, A (St. Etienne U.) ; Marcandella, C (CEA DAM) ; Francesca, D Di (CERN) ; Paillet, P (CEA DAM) ; Morana, A (St. Etienne U.) ; Vidalot, J (St. Etienne U.) ; Campanella, Cosimo (St. Etienne U.) ; Agnello, S (Palermo U.) et al.
The radiation response of a phosphorus-doped multimode optical fiber is investigated under both transient (pulsed X-rays) and steady-state ( $\gamma $ - and X-rays) irradiations. The influence of a H2preloading on the fiber radiation-induced attenuation (RIA) in the 300–2000-nm wavelength range has been characterized [...]
2019 - 7 p. - Published in : IEEE Trans. Nucl. Sci. 67 (2019) 289-295

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