CERN Accelerating science

All CERN Accelerators documents

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2022-05-21
06:07
Design, Construction and Testing of a Magnetic Probe for Fast Kicker Magnets / Ayala Cintas, Núria (CERN) ; Ferrero Colomo, Álvaro (CERN) ; Kramer, Thomas (CERN)
The CERN PS injection kicker has been modified in the framework of the LHC Injector Upgrade (LIU) project to allow injecting proton beams with an energy of 2 GeV. One of the most important items of the system parameter validation is the measurement and analysis of the magnetic field in the magnet aperture. [...]
Geneva : JACoW, 2021 - 4 p. - Published in : JACoW IPAC 2021 (2021) 3510-3513 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.3510-3513

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2022-05-21
06:07
An experimental study of focused very high energy electron beams for radiotherapy / Kokurewicz, Karolina (Glasgow U.) ; Brunetti, Enrico (Glasgow U.) ; Curcio, Alessandro (CERN) ; Gamba, Davide (CERN) ; Garolfi, Luca (CERN) ; Gilardi, Antonio (CERN ; U. Naples (main) ; INFN, Naples) ; Senes, Eugenio (CERN ; JAI, UK) ; Sjobak, Kyrre Ness (CERN ; U. Oslo (main)) ; Farabolini, Wilfrid (CERN ; U. Paris-Saclay) ; Corsini, Roberto (CERN) et al.
Very high energy electron (VHEE) beams have been proposed as an alternative radiotherapy modality to megavoltage photons; they penetrate deeply without significant scattering in inhomogeneous tissue because of their high relativistic inertia. However, the depth dose distribution of a single, collimated VHEE beam is quasi-uniform, which can lead to healthy tissue being overexposed. [...]
2021 - 7 p. - Published in : Commun. Phys. 4 (2021) 33 Fulltext: PDF;

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2022-05-21
06:07
Effect of Strain Rate on the Tensile Mechanical Properties of Electron Beam Welded OFE Copper and High-Purity Niobium for SRF Applications / Croteau, J -F (ENSTA, Paris) ; Peroni, M (Euratom, Ispra) ; Atieh, S (CERN) ; Jacques, N (ENSTA, Paris) ; Cantergiani, E (Unlisted, DE)
An investigation of the tensile mechanical properties of electron beam welded OFE copper and high-purity niobium sheets is presented. Specimens were deformed in tension at strain rates ranging from $10^{-3}$ to $~1600$ s$^{-1}$. [...]
2021 - 14 p. - Published in : Journal of Dynamic Behavior of Materials 7 (2021) 485-498 Fulltext: PDF;

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2022-05-21
06:07
Forced Coupling Resonance Driving Terms / Wegscheider, Andreas (CERN) ; Tomás García, Rogelio (CERN)
At the LHC, coupling is routinely measured using forced oscillations of the beam through excitation with an AC-dipole. The driving of the particle motion has an impact on the measurement of resonance driving terms. [...]
Geneva : JACoW, 2021 - 4 p. - Published in : JACoW IPAC '21 (2021) 3646-3649 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.3646-3649

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2022-05-21
06:07
Impedance and Thermal Studies of the LHC Injection Kicker Magnet Upgrade / Barnes, Michael J (CERN) ; Bjorkqvist, Oskar (CERN) ; Motschmann, Fritz (CERN)
The bunch intensities of High Luminosity (HL) LHC are predicted to lead to heating of the ferrite yokes of the LHC injection kicker magnets (MKI), in their current configuration, to their Curie temperature. Hence, the MKIs are being upgraded to meet the requirements of HL-LHC, which is planned to start in the mid-2020s. [...]
Geneva : JACoW, 2021 - 4 p. - Published in : JACoW IPAC 2021 (2021) 3502-3505 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.3502-3505

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2022-05-21
06:07
Modernisation of the Toolchain and Continuous Integration of Front-End Computer Software at CERN / Mantion, Pierre (CERN) ; Deghaye, Stephane (CERN) ; Fiszer, Lukasz (CERN) ; Irannejad, Farhad (CERN) ; Lauener, Joel (CERN) ; Voelkle, Martin (CERN)
Building C++ software for low-level computers requires carefully tested frameworks and libraries. The major difficulties in building C++ software are to ensure that the artifacts are compatible with the target system’s (OS, Application Binary Interface), and to ensure that transitive dependent libraries are compatible when linked together. [...]
2022 - 6 p. - Published in : JACoW ICALEPCS 2021 (2022) 242-247 Fulltext: PDF;
In : 18th International Conference on Accelerator and Large Experimental Physics Control Systems, Online, 18 - 22 Oct 2021, pp.242-247

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2022-05-21
06:07
Interlock System Upgrades at the CERN Accelerator Complex During Long Shutdown 2 / Uythoven, Jan (CERN) ; Antoine, Alain (CERN) ; Martin, Christophe (CERN) ; Mirana Fontan, Adrian (CERN) ; Mompo, Richard (CERN) ; Romera Ramírez, Iván (CERN) ; Secondo, Raffaello (CERN)
The CERN accelerator complex stopped operation at the end of 2018 for the Long Shutdown 2 (LS2), allowing for the LHC Injector Upgrade program (LIU) and consolidation work to be accomplished. A gradual restart of the different accelerators is ongoing in 2021, culminating with the LHC foreseen to be back in operation early 2022. [...]
Geneva : JACoW, 2021 - 4 p. - Published in : JACoW IPAC '21 (2021) 3316-3319 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.3316-3319

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2022-05-21
06:07
CERN SPS Sprinkler System: A Customized Industrial Solution for a Non-Conventional Site / Suwalska, Anna (CERN) ; Arnalich, Arturo (CERN) ; Deperraz, Florian (CERN) ; Munoz Codoceo, Miriam (CERN) ; Ninin, Pierre (CERN)
Until 2018, the limited firefighting means in the SPS complex largely exposed it to the consequences of self-ignition or accidental fire. In 2015 the SPS Fire Safety project was launched with the objective of improving life safety and property protection by deploying a whole set of automatic actions to protect SPS in case of fire outbreak. [...]
Geneva : JACoW, 2021 - 3 p. - Published in : JACoW IPAC '21 (2021) 3313-3315 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.3313-3315

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2022-05-21
06:07
CERN Controls Configuration Service - Event-Based Processing of Controls Changes / Urbaniec, Bartlomiej (CERN) ; Burdzanowski, Lukasz (CERN)
The Controls Configuration Service (CCS) is a core component of the data-driven Control System at CERN. Built around a central database, the CCS provides a range of client APIs and graphical user interfaces (GUI) to enable efficient and user-friendly configuration of Controls. [...]
2022 - 4 p. - Published in : JACoW ICALEPCS 2021 (2022) 253-256 Fulltext: PDF;
In : 18th International Conference on Accelerator and Large Experimental Physics Control Systems, Online, 18 - 22 Oct 2021, pp.253-256

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2022-05-21
06:07
The impact of H$_2$ and N$_2$ on the material properties and secondary electron yield of sputtered amorphous carbon films for anti-multipacting applications / Fernández, H Moreno (CERN) ; Himmerlich, M (CERN) ; Costa Pinto, P (CERN) ; Coroa, J (CERN) ; Sousa, D (Nova U., Lisboa) ; Baris, A (CERN) ; Taborelli, M (CERN)
Amorphous carbon thin films were prepared by direct current hollow cathode sputter deposition in Ar discharge with the injection of small amounts of H$_2$ and/or N$_2$. The influence of these additives on the film properties with particular focus on the application as a coating for electron cloud mitigation in particle accelerators is characterized by optical spectroscopy, X-ray photoelectron spectroscopy, and secondary electron yield (SEY) measurements. [...]
2021 - 10 p. - Published in : Appl. Surf. Sci. 542 (2021) 148552

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