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CERN Published Articles

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2025-02-01
06:02
Mitigation of Helium Leakage Risks Within the Cryostat of ITER Including Diagnosing the Occurrence of Stress Corrosion Cracking Within the Thermal Shield Cryogenic Helium Pipes / Pearce, Robert (Euratom, St. Paul Lez Durance) ; Bersier, J L (Euratom, St. Paul Lez Durance) ; Iannetti, A (Euratom, St. Paul Lez Durance) ; Jarrige, C (Euratom, St. Paul Lez Durance) ; Kang, D (Euratom, St. Paul Lez Durance) ; Laugier, D (Euratom, St. Paul Lez Durance) ; Nasluzov, S (Euratom, St. Paul Lez Durance) ; Noh, C H (Euratom, St. Paul Lez Durance) ; Thapa, B (Euratom, St. Paul Lez Durance) ; Worth, L (Euratom, St. Paul Lez Durance) et al.
The insulating vacuum within the ITER Cryostat has a prime purpose to minimize the heat load on the superconducting coil system by gas thermal conductivity. These coils are shielded from thermal radiation by an 80 K helium-cooled silver-coated thermal shield (TS) consisting of ~500 panels. [...]
2024 - 7 p. - Published in : IEEE Trans. Plasma Sci. 52 (2024) 3680-3686

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2025-02-01
06:02
Generative models and seq2seq techniques for the flash-simulation of the LHCb experiment / Anderlini, Lucio (INFN, FLorence) ; Barbetti, Matteo (INFN, CNAF) ; Capelli, Simone (INFN, Milan Bicocca ; Milan Bicocca U.) ; Corti, Gloria (CERN) ; Davis, Adam (Manchester U.) ; Derkach, Denis (Higher Sch. of Economics, Moscow) ; Martinelli, Maurizio (INFN, Milan Bicocca ; Milan Bicocca U.) /LHCb Collaboration
Simulating detector and reconstruction effects on physics quantities is crucial for data analysis, but it is coming unsustainably costly for the upcoming HEP experiments. The most radical approach to speed-up detector simulation is Flash Simulation, as proposed by the LHCb collaboration in Lamarr, a software package implementing a novel simulation paradigm relying on Deep Generative Models and Seq2seq attention-driven techniques to deliver simulated samples. [...]
2025 - 6 p. - Published in : PoS ICHEP2024 (2025) 1032 Fulltext: PDF;
In : 42nd International Conference on High Energy Physics (ICHEP 2024), Prague, Czech Republic, 18 - 24 Jul 2024, pp.1032

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2025-02-01
06:02
Thermoluminescence kinetic parameters of microwave chemically vapour-deposited diamond films at different gamma dose rates / Cruz-Zaragoza, E (Mexico U., ICN) ; Favalli, A (Euratom, Ispra) ; Gastélum, S (Sonora U.) ; Furetta, C (CERN) ; Meléndrez, R (Sonora U.) ; Barboza-Flores, M (Sonora U.)
Microwave chemically vapour-deposited (MWCVD) diamond films have been successfully used in dosimetric applications including radiotherapy and industrial dose assessments. The thermoluminescence (TL) properties and dose response, in a suitable MWCVD diamond film thermoluminescent dosimeter, should be independent of the irradiation dose rate used. [...]
2009 - 7 p. - Published in : Radiat. Eff. Def. Solids 164 (2009) 211-217

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2025-02-01
06:02
Design of a 6-supports exactly constrained supporting system for superconducting magnets and its application to rotating gantries for cancer therapy / Piacentini, Luca (CERN ; Riga Tech. U.) ; Dassa, Luca (CERN) ; Perini, Diego (CERN) ; Ratkus, Andris (Riga Tech. U.) ; Torims, Toms (Riga Tech. U.) ; Uberti, Stefano (U. Brescia)
In particle therapy for cancer treatment, the radiation dose to tissues around the tumour can be reduced by employing a rotating gantry—a mechanical structure allowing the delivery of the particle beam to the patient from various angles. Gantries for ion therapy can benefit from the integration of superconducting magnets to minimize the size and weight of the machine. [...]
2024 - 24 p. - Published in : Meccanica 59 (2024) 2203-2226 Fulltext: PDF;

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2025-02-01
06:02
Diversity and Inclusion at the LHC / Rai, Ananya (Yale U.) /LHC experiments Collaboration
The Large Hadron Collider is a global effort to unravel the deepest mysteries in fundamental physics. The LHC now spans participation from 600 institutes and universities from around the globe, making it one of the most diverse workplaces in the world. [...]
2025 - 6 p. - Published in : PoS LHCP2024 (2025) 209 Fulltext: PDF;
In : 12th Edition of the Large Hadron Collider Physics Conference (LHCP2024), Boston, United States, 3 - 7 Jun 2024, pp.209

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2025-02-01
06:02
Synergistic effects in enhancing octant and mass ordering sensitivity in the presence of a sterile neutrinos / Pan, Supriya (Ahmedabad, Phys. Res. Lab) ; Goswami, Srubabati (Ahmedabad, Phys. Res. Lab) ; Chatterjee, Animesh (Ahmedabad, Phys. Res. Lab ; CERN)
In the quest for understanding neutrino oscillations, current challenges lie in the discovery of the octant of $\theta_{23}$, sign of $\Delta m^2_{31}$ (mass ordering) and $\delta_{CP}$. The anomalous signatures of oscillation at short baseline experiments in LSND, MinBooNE, and Gallium-based experiments GALLEX, SAGE, and BEST have led to a common possible conjecture of the presence of an extra light sterile neutrino state ($\nu_s$) with eV-sale mass. [...]
2024 - 6 p. - Published in : PoS ICHEP2024 (2025) 158 Fulltext: PDF;
In : 42nd International Conference on High Energy Physics (ICHEP 2024), Prague, Czech Republic, 18 - 24 Jul 2024, pp.158

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2025-02-01
06:02
LHCb upgrades / Niel, Elisabeth Maria (CERN) /LHCb Collaboration
The LHCb experiment, a single-arm forward spectrometer designed for the study of beauty and charm decays, operated successfully through the end of the Large Hadron Collider (LHC) Run 2. During this period, it collected data that resulted in numerous discoveries, challenging the boundaries of the Standard Model (SM) of particle physics and providing opportunities to explore potential new physics beyond it. [...]
2024 - 8 p. - Published in : PoS LHCP2024 (2025) 192 Fulltext: PDF;
In : 12th Edition of the Large Hadron Collider Physics Conference (LHCP2024), Boston, United States, 3 - 7 Jun 2024, pp.192

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2025-02-01
06:02
Upgrade of ATLAS Hadronic Tile Calorimeter for the High Luminosity LHC / Sotto-Maior Peralva, Bernardo (Rio de Janeiro State U.) /ATLAS Collaboration
The Tile Calorimeter (TileCal) is the hadronic calorimeter covering the central region of the ATLAS experiment. The High-Luminosity phase of the LHC, expected to start in 2029, will deliver five times the nominal instantaneous luminosity of the LHC. [...]
2025 - 4 p. - Published in : PoS LHCP2024 (2025) 224 Fulltext: PDF;
In : 12th Edition of the Large Hadron Collider Physics Conference (LHCP2024), Boston, United States, 3 - 7 Jun 2024, pp.224

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2025-02-01
06:02
Usage of GPUs for online and offline reconstruction in ALICE in Run 3 / Rohr, David (CERN)
In Run 3, ALICE records Pb-Pb collisions at an unprecedented rate of 50 kHz, storing all data in a continuous readout (triggerless) mode.The main purpose of the ALICE online computing farm is the calibration of the detectors and the compression of the recorded data.The detector with the largest data volume by far is the TPC, and the online farm is thus optimized for the fast and efficient processing of TPC data during data taking.For this, ALICE leverages heavily the computing power of GPUs.When there is no beam in the LHC, the GPU-equipped farm performs the offline reconstruction of the recorded data, in addition to the GRID.Since the majority of the computing capacity of the farm is in the GPUs, and meanwhile also some GRID sites begin to offer GPU resources, ALICE has started to offload other parts of the offline reconstruction to GPUs as well.The talk will present the experience and processing performance with GPUs in the Run 3 Pb-Pb and pp online and offline processing in ALICE..
2024 - 6 p. - Published in : PoS ICHEP2024 (2025) 1012 Fulltext: PDF;
In : 42nd International Conference on High Energy Physics (ICHEP 2024), Prague, Czech Republic, 18 - 24 Jul 2024, pp.1012

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2025-02-01
06:02
New Analytical Formulas for the Rank of Farey Fractions and Estimates of the Local Discrepancy / Tomás García, Rogelio (CERN)
New analytical formulas are derived for the rank and the local discrepancy of Farey fractions. The new rank formula is applicable to all Farey fractions and involves sums of a lower order compared to the searched one. [...]
2025 - 12 p. - Published in : Mathematics 13 (2025) 140 Fulltext: PDF;

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