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2024-03-27
06:26
The neutron time-of-flight facility n_TOF at CERN Recent facility upgrades and detector developments / n_TOF Collaboration
Based on an idea by Carlo Rubbia, the n_TOF facility at CERN has been operating for over 20 years. It is a neutron spallation source, driven by the 20 GeV/c proton beam from the CERN PS accelerator. [...]
2023 - 11 p. - Published in : J. Phys. : Conf. Ser. 2586 (2023) 012150 Fulltext: PDF;
In : 28th International Nuclear Physics Conference (INPC 2022), Cape Town, South Africa, 11 - 16 Sep 2022, pp.012150

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2024-03-27
06:26
Neutron capture and total cross-section measurements on $^{94,95,96}$Mo at n_TOF and GELINA / n_TOF Collaboration
Capture and total cross section measurements for 94,95,96Mo have been performed at the neutron time-of-flight facilities, n_TOF at CERN and GELINA at JRC-Geel. The measurements were performed using isotopically enriched samples with an enrichment above 95% for each of the 94,95,96Mo isotopes. [...]
2023 - 4 p. - Published in : EPJ Web Conf. 284 (2023) 01031 Fulltext: PDF;
In : 15th International Conference on Nuclear Data for Science and Technology, Online, 21 - 29 Jul 2022, pp.01031

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2024-03-27
06:26
Nuclear astrophysics activities at the n_TOF facility at CERN / Massimi, Cristian (Bologna U. ; INFN, Bologna) /n_TOF Collaboration
The n_TOF facility at CERN is operational since 2001, and provides neutron-induced cross section data of interest to several research fields, including nuclear astrophysics. The neutron time-of-flight (TOF) facility features three experimental areas located at different distances from the pulsed neutron source. [...]
2023 - 6 p. - Published in : EPJ Web Conf. 275 (2023) 01009 Fulltext: PDF;
In : 11th European Summer School on Experimental Nuclear Astrophysics, Catania, Italy, 12 - 19 Jun 2022, pp.01009

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2024-03-26
07:04
Alignment of a Solenoid System by Means of a Translating-Coil Magnetometer / Pentella, Mariano (CERN) ; Kjellqvist, Ville Mattias Mattsson (CERN) ; Petrone, Carlo (CERN) ; Russenschuck, Stephan (CERN) ; von Freeden, L (CERN)
The electron cooler operating at the Antiproton Decelerator (AD) at CERN is at the end of its life cycle. The electron cooler, operated for over 40 years, has been used to decelerate anti-proton beams having an energy of about 5.3 MeV. [...]
2024 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 9001404 Fulltext: PDF;

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2024-03-26
07:03
Effect of Irradiation Temperature and Atmosphere on Aging of Epoxy Resins for Superconducting Magnets / Parragh, David Mate (CERN) ; Scheuerlein, Christian (CERN) ; Martin, Noémie (Lyon U.) ; Piccin, Roland (CERN) ; Ravotti, Federico (CERN) ; Pezzullo, Giuseppe (CERN) ; Koettig, Torsten (CERN) ; Lellinger, Dirk (Unlisted, DE)
The superconducting magnets of future particle accelerators will be exposed to high irradiation doses at cryogenic temperatures. To investigate the effect of irradiation temperature and atmosphere on the aging behavior, we have characterized the changes in thermomechanical properties of six epoxy resins for potential use in superconducting magnets after irradiation up to 20 MGy in ambient air, inert gas, and liquid helium. [...]
2024 - 15 p. - Published in : MDPI Polymers 16 (2024) 407 Fulltext: PDF;

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2024-03-26
07:03
Modeling strain-induced martensitic transformation in austenitic stainless steels subjected to cryogenic temperatures using incremental mean-field homogenization schemes / Fernández-Pisón, P (CERN) ; Vishnu, A R (Carlos III U., Madrid) ; Vadillo, G (CERN) ; Rodríguez-Martínez, J A (CERN)
Austenitic stainless steels are commonly used as structural materials in high-field superconducting magnet systems because they retain high strength, ductility, and toughness at very low temperatures, and they are paramagnetic or antiferromagnetic under the Néel temperature in their fully austenitic state. However, they are susceptible to strain-induced martensitic transformation, especially at cryogenic temperatures, which modifies the material properties, induces volume changes and additional strain hardening, and leads to ferromagnetic behavior. [...]
2024 - 31 p. - Published in : Mech. Mat. 189 (2024) 104891 Fulltext: PDF;

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2024-03-26
07:03
Design and Metrological Characterization of a Digitizer for the Highest Precision Magnet Powering in the High Luminosity Large Hadron Collider / Beev, Nikolai (CERN ; Bratislava, Slovak Tech. U.) ; Cerqueira Bastos, Miguel (CERN) ; Martino, Michele (CERN) ; Valuch, Daniel (Bratislava, Slovak Tech. U. ; CERN) ; Palafox, Luis (Braunschweig, Phys. Tech. Bund.) ; Behr, Ralf (Braunschweig, Phys. Tech. Bund.)
A new digitizer, the HPM7177, which is a fundamental component of the signal chain for high precision measurement of particle accelerator magnet currents, is presented. It was designed to meet the unprecedented performance requirements for new 14 kA and 18 kA power converters (PCs) for the High Luminosity Large Hadron Collider (HL-LHC) project at CERN, particularly in terms of low-frequency noise and stability. [...]
2024 - 10 p. - Published in : IEEE Trans. Instrum. Meas. 73 (2024) 6501710

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2024-03-26
07:03
Georges: A modular Python library for seamless beam dynamics simulations and optimization / Tesse, Robin (U. Brussels (main)) ; Hernalsteens, Cédric (CERN ; U. Brussels (main)) ; Gnacadja, Eustache (U. Brussels (main)) ; Pauly, Nicolas (U. Brussels (main)) ; Ramoisiaux, Eliott (U. Brussels (main)) ; Vanwelde, Marion (U. Brussels (main))
Particle tracking codes such as MAD-X or TRANSPORT commonly use a matrix formalism to propagate beams through magnetic elements as it simplifies the analysis of particle behavior, facilitates beam optimization and component design, and enables accurate particle accelerator simulations. However, these codes are inefficient when tracking many particles or accounting for energy degradation along the beamline. [...]
2023 - 6 p. - Published in : SoftwareX 24 (2023) 101579 Fulltext: PDF;

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2024-03-26
07:03
Design and Manufacturing of an HTS Helical Undulator Demonstrator for Compact FELs / Richter, S C (CERN ; KIT, Karlsruhe) ; Ballarino, A (CERN) ; Bernhard, A (KIT, Karlsruhe) ; Müller, A S (KIT, Karlsruhe)
Among all superconducting undulator geometries, a helical undulator provides a very compact geometry and further is more effective in producing synchrotron radiation, providing circularly polarized photons, which are widely usable for synchrotron radiation users. These characteristics make it a very attractive option for realizing more compact free-electron lasers, requiring a combination of short-period and high-field undulators to produce coherent light up to X-rays. [...]
2024 - 7 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4101507 Fulltext: PDF;

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2024-03-26
07:03
Overview of Identified Challenges in the Development Process of Superconducting Accelerator Magnets / Kaeske, Jens (CERN ; KIT, Karlsruhe) ; Fiscarelli, Lucio (KIT, Karlsruhe) ; Albers, Albert (KIT, Karlsruhe) ; Russenschuck, Stephan (CERN)
Development challenges in the domain of superconducting magnets are concentrated on technical problems in the current literature. Organizational, domain-specific challenges are often seen as secondary but must be considered with new holistic development approaches like Model-Based Systems Engineering (MBSE) becoming more popular. [...]
2024 - 15 p. - Published in : Designs 8 (2024) 13 Fulltext: PDF;

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