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FIB-SEM investigation and uniaxial compression of flexible graphite
/ Solfiti, Emanuele (Norwegian U. Sci. Tech.) ; Wan, Di (Norwegian U. Sci. Tech.) ; Celotto, Ambra (Norwegian U. Sci. Tech.) ; Solieri, Nicola (CERN) ; Munoz, Pablo Andreu (CERN) ; Ximenes, Rui Franqueira (CERN) ; Heredia, Jorge Maestre (CERN) ; Martin, Claudio Leopoldo Torregrosa (CERN) ; Nuiry, Antonio Perillo Marcone Francois-Xavier (CERN) ; Nuiry, F.X. (CERN) et al.
Flexible graphite (FG) with 1 - 1.2 g/cm$^3$ density is employed as beam energy absorber material in the CERN's Large Hadron Collider (LHC) beam dumping system. However, the increase of energy deposited expected for new HL-LHC (High-Luminosity LHC) design demanded for an improvement in reliability and safety of beam dumping devices, and the need for a calibrated material model suitable for high-level FE simulations has been prioritized. [...]
arXiv:2304.04021.-
2023-07-26 - 16 p.
- Published in : Materials & Design 233 (2023) 112187
Fulltext: 2304.04021 - PDF; Publication - PDF;
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High precision scalable power converter for accelerator magnets
/ Haugen, Krister Leonart (Norwegian U. Sci. Tech. ; CERN) ; Papastergiou, Konstantinos (CERN) ; Asimakopoulos, Panagiotis (CERN) ; Peftitsis, Dimosthenis (Norwegian U. Sci. Tech.)
The lower conduction power losses and the positive temperature coefficient that favours parallel connections, make Silicon Carbide (SiC) Metal Oxide Semiconductor Field-Effect Transistors (MOSFETs) to be an excellent replacement of existing Silicon Insulated Gate Bipolar Transistors (IGBTs) technology. These characteristics combined with high switching frequency operation, enables the design of high-accuracy DC-DC converters with minimised filtering requirements. [...]
arXiv:2201.10824.-
2022-03-16 - 7 p.
- Published in : JINST
Fulltext: PDF;
In : TWEPP 2021 Topical Workshop on Electronics for Particle Physics, Online, Online, 20 - 24 Sep 2021, pp.C03021
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Experimental characterization of cyclic behaviour of pure lead: Temperature sensitivity and strain-rate effects
/ Solfiti, E (Norwegian U. Sci. Tech.) ; Viespoli, L M (SINTEF, Oslo) ; Lervåg, M A (SINTEF, Oslo) ; Kristensen, T A (SINTEF, Oslo) ; Esposito, R (CERN) ; Calviani, M (CERN) ; Ximenes, R Franqueira (CERN) ; Berto, F (Norwegian U. Sci. Tech. ; U. Rome La Sapienza (main)) ; Alvaro, A (Norwegian U. Sci. Tech. ; SINTEF, Oslo)
Proton beam pulses with an energy of 20 GeV/c collide with a pure-lead based target installed in the neutron
Time-Of-Flight facility (n_TOF) at the European Laboratory for Particle Physics (CERN). The interaction between
the proton beam and lead produces neutrons via spallation mechanism and results in a rapid temperature increase
and propagation of stress waves. [...]
2023 - 11 p.
- Published in : Mater. Sci. Eng. A 874 (2023) 145082
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A new cold cooling system using krypton for the future upgrade of the LHC after the long shutdown 4 (LS4)
/ Contiero, Luca (CERN ; Norwegian U. Sci. Tech.) ; Verlaat, Bart (CERN) ; Hafner, Armin (Norwegian U. Sci. Tech.) ; Banasiak, Krzysztof (Norwegian U. Sci. Tech.) ; Allouche, Yosr (Norwegian U. Sci. Tech.) ; Petagna, Paolo (CERN)
Future silicon detectors for High Energy Physics Experiments will require operation at lower temperatures to cope with radiation damage of the sensors and consequent increase of the dark current, beyond the limit of the current CO2 evaporative cooling system. This, together with many other requirements such as mass minimization and high radiation hardness, pushes the need of a new advanced cooling technology. [...]
2024 - 15 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1064 (2024) 169420
Fulltext: PDF;
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Flexible graphite as beam dumping material in the TDE blocks of the Large Hadron Collider
/ Solfiti, E (Norwegian U. Sci. Tech.) ; Calviani, M (CERN) ; Perillo-Marcone, A (CERN) ; Heredia, J M (CERN) ; Torregrosa, C (CERN) ; Alvaro, A (SINTEF, Oslo) ; Berto, F (Norwegian U. Sci. Tech.)
The Large Hadron Collider (LHC) is a high energy particle collider at the European Laboratory for Particle Physics (CERN) in Geneva, Switzerland. The LHC Beam Dumping System (LBDS) is composed by different equipment employed to extract and absorb the LHC circulating beam in case of need. [...]
2020 - 7 p.
- Published in : Procedia Structural Integrity 28 (2020) 2228-2234
Fulltext: PDF;
In : 1st Virtual European Conference on Fracture (VECF1), Online, Italy, 29 June - 1 Jul 2020, pp.2228-2234
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Development of novel low-mass module concepts based on MALTA monolithic pixel sensors
/ Weick, J. (CERN ; Darmstadt, Tech. Hochsch.) ; Dachs, F. (CERN) ; Riedler, P. (CERN) ; Pinto, M. Vicente Barreto (Geneva U.) ; Zoubir, A.M. (Darmstadt, Tech. Hochsch.) ; de Acedo, L. Flores Sanz (CERN) ; Asensi Tortajada, I. (CERN) ; Dao, V. (CERN) ; Dobrijevic, D. (CERN ; Zagreb U.) ; Pernegger, H. (CERN) et al.
The MALTA CMOS monolithic silicon pixel sensors has been developed in the Tower 180 nm CMOS imaging process. It includes an asynchronous readout scheme and complies with the ATLAS inner tracker requirements for the HL-LHC. [...]
arXiv:2303.05792.-
2023-04-03 - 5 p.
- Published in : JINST 18 (2023) C04003
Fulltext: PDF;
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Comparison of bulk and interfacial diffusion of $^{8}Li^{+}$ in solid-state battery materials with ${\beta}$-NMR spectroscopy
/ Rees, Gregory (Department of Materials, University of Oxford, Oxford, UK; The Faraday Institution, Didcot, UK) ; Payne, Batholomew (Department of Materials, University of Oxford, Oxford, UK;The Faraday Institution, Didcot, UK) ; Sparks, Amy (Experimental Physics Department, CERN, Geneva, Switzerland) ; Azaryan, Nikolay (Experimental Physics Department, CERN, Geneva, Switzerland; Department of Particle and Nuclear Physics, University of Geneva, Geneva, Switzerland) ; Baranowski, Mikolaj (Department of Particle and Nuclear Physics, University of Geneva, Geneva, Switzerland) ; Bissell, Mark (Experimental Physics Department, CERN, Geneva, Switzerland) ; Bruce, Peter (Department of Materials, University of Oxford, Oxford, UK; The Faraday Institution, Didcot, UK) ; Chojnacki, Mateusz (Experimental Physics Department, CERN, Geneva, Switzerland; Department of Particle and Nuclear Physics, University of Geneva, Geneva, Switzerland) ; Mauro, Pasta (Department of Materials, University of Oxford, Oxford, UK; The Faraday Institution, Didcot, UK) ; Pesek, Michael (Experimental Physics Department, CERN, Geneva, Switzerland) et al.
CERN-INTC-2024-056 ; INTC-P-713.
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2024.
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