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2024-10-31
17:26
Slow Extraction: Upgrades for Next Ion Medical Machines at FLASH timescales / Taylor, Rebecca
Slow resonant extraction is the control of resonant beams to extract a continuous rate of particles from the accelerator, over seconds. This technique is crucial for hadron therapy synchrotrons, where slowly extracted beams are scanned across tumour volumes. [...]
CERN-THESIS-2024-218.- Imperial College London : Spiral, 2024-11-01 - 214 p. Fulltext: PDF; External link: Approve this document (restricted)

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2024-10-31
12:12
The Universe in a Cake! A Dark Matter Cake Recipe & Explainer / Leney, Katharine (Southern Methodist University (US))
This handout includes a cake recipe and an explainer about the composition of the universe — covering visible matter, dark matter, and dark energy. [...]
ATLAS-OUTREACH-2024-026. - 2024 - 3.
Language: English

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2024-10-31
11:24
Development and Reliability Testing of a new Low-Voltage Power Supply for the ATLAS Hadronic Tile-Calorimeter Phase-II Upgrade / Mckenzie, Ryan Peter (University of the Witwatersrand (ZA))
The Large Hadron Collider (LHC), located at the Conseil Européen pour la Recherche Nucléaire (CERN) also known as the European Laboratory of Particle Physics, is a two- ring-superconducting-hadron accelerator and collider located on the Franco-Swiss bor- der. The LHC was successfully commissioned in 2010 for proton–proton collisions and is expected to deliver 500 fb−1 before Long Shutdown three (LS3) that is schedule to commence in 2026. [...]
CERN-THESIS-2024-217.- Fulltext: PDF; External link: Approve this document (restricted)

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2024-10-31
06:04
High voltage consolidation of the temperature measurement channels of the LHC superconducting current leads / Trikoupis, N (CERN) ; Casas-Cubillos, J (CERN) ; Bustamante, E (CERN)
Recurrent dielectric breakdowns on the cryogenics instrumentation during the CERN LHC Electrical Quality Assurance (ELQA) campaigns led to an investigation of their root causes. During the CERN Long Shutdown 2 (LS2), several weaknesses were identified like floating wires or cable screens, cabling non-conformities, connector assembly issues, and weakness of the electronic conditioning cards. [...]
2023 - 8 p. - Published in : JINST 18 (2023) C02010
In : Topical Workshop on Electronics for Particle Physics 2022 (TWEPP 2022), Bergen, Norway, 19 - 23 Sep 2022, pp.C02010

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2024-10-31
06:04
Characterisation of the n_TOF 20 m beam line at CERN with the new spallation target / n_TOF Collaboration
The n_TOF facility hosts CERN’s pulsed neutron source, comprising two beam lines of different flight paths and one activation station. It is based on a proton beam delivered by the PS accelerator impinging on a lead spallation target. [...]
2023 - 6 p. - Published in : EPJ Web Conf. 284 (2023) 06006 Fulltext: PDF;
In : 15th International Conference on Nuclear Data for Science and Technology, Online, 21 - 29 Jul 2022, pp.06006

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2024-10-30
15:31
LHC Availability Report 2023 / Felsberger, Lukas (CERN) ; Asko, Anti (CERN) ; Heron, Jack (CERN) ; Hostettler, Michi (CERN) ; Mikulec, Bettina (CERN) ; Uythoven, Jan (CERN) ; Wollmann, Daniel (CERN)
This document summarises the LHC availability during 2023 and compares it to previous years. [...]
CERN-ACC-NOTE-2024-0019. - 2024 - 22.
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2024-10-29
15:25
Introduction to the Accelerator Control System 2023 Edition / Deghaye, Stephane (CERN) ; Fortescue, Eve (CERN)
This document is an attempt to fill the gap between the Control System, as provided by the Controls groups, and anybody who needs to work with the Control System. [...]
CERN-ACC-NOTE-2024-0018. - 2024 - 224.
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2024-10-24
07:32
New accelerator designs: NIMMS / Vretenar, Maurizio (CERN) ; Benedetto, Elena
Purpose This article summarises the presentation given at the “Hadrontherapy: status and perspectives” event. Methods Structure, methodology, and objectives of the Next Ion Medical Machine Study collaboration are introduced. Its four Work Packages are: small synchrotrons for particle therapy, curved superconducting magnets for synchrotrons and gantries, superconducting gantry design, and high-frequency ion linacs. [...]
2024 - 11 p. - Published in : Health Technol. 14 (2024) 945-955 Fulltext: PDF;

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2024-10-24
05:37
Analysis of double-resonance crossing in adiabatic trapping phenomena for quasi-integrable area-preserving maps with time-dependent exciters / Bazzani, Armando (Bologna U. ; INFN, Bologna) ; Capoani, Federico (Bologna U. ; INFN, Bologna) ; Giovannozzi, Massimo (CERN)
In this paper, we analyze the adiabatic crossing of a resonance for Hamiltonian systems when a double-resonance condition is satisfied by the linear frequency at an elliptic fixed point. We discuss in detail the phase-space structure on a class of Hamiltonians and area-preserving maps with an elliptic fixed point in the presence of a time-dependent exciter. [...]
arXiv:2402.18358.- 2024-05-23 - 14 p. - Published in : Phys. Rev. E 109 (2024) 054212 Fulltext: 2402.18358 - PDF; Publication - PDF;

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2024-10-18
06:28
Reliability run and data analysis of the accelerated aging of present and future electrolytic capacitors installed in the protection systems of superconducting magnets of the Large Hadron Collider at CERN / Guasch-Martínez, J (CERN) ; Carrillo, D (CERN) ; de Nicolás, E (CERN) ; Bjorkhaug, E (CERN) ; Nowak, E (CERN) ; Pojer, M (CERN) ; Rodríguez-Mateos, F (CERN)
This study evaluates the lifetime and aging process of the aluminium electrolytic capacitors to be used in the new protection systems of the High Luminosity LHC superconducting magnets. The accelerated testing and analysis of several groups of capacitors aged for more than one year provided insights into their expected lifespan and aging process. [...]
2024 - 7 p. - Published in : JINST
Fulltext: PDF;
In : Topical Workshop on Electronics for Particle Physics 2023 (TWEPP 2023), Geremeas, Sardinia, Italy, 1 - 6 Oct 2023, pp.C03003

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