CERN Accelerating science

All CERN Accelerators documents

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This new collection aggregates CERN accelerator-related documents on CDS. It will continuously be enriched and improved in the near future.
Latest additions:
2022-08-13
23:33
Control of Proton Beam Self-Modulation for AWAKE via Initial Beam Parameters / Wyler, Samuel Stefan (EPFL - Ecole Polytechnique Federale Lausanne (CH))
Plasma wakefield acceleration is a promising concept in the development of a new type of electron accelerators for high-energy physics experiments. The Advanced Wakefield Experiment AWAKE is based on this concept and has been, following the first successful proof of concept Run, under continuous and carefully planned development. [...]
CERN-THESIS-2022-107.- 100 p. Fulltext: PDF; External link: Approve this document (restricted)

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2022-08-12
18:32
Report from LHC MD 3312: Replicating HL-LHC DA / Dilly, Joschua Werner (Humboldt University of Berlin (DE)) ; Albert, Markus (CERN) ; Carlier, Felix Simon (CERN) ; Coello De Portugal - Martinez Vazquez, Jaime Maria ; Dalena, Barbara (Université Paris-Saclay (FR)) ; Fol, Elena (CERN) ; Hofer, Michael (CERN) ; Maclean, Ewen Hamish (CERN) ; Malina, Lukas ; Persson, Tobias Hakan Bjorn (CERN) et al.
During MD3312 on the 30.10.2018 the non-linear conditions in the insertion regions of the planned HL-LHC were replicated to our best knowledge and within the capabilities of the hardware currently available in the LHC: A flat ATS-optics scheme of beta* = 15cm / 60cm in IP1 and IP5 was applied as well as sextupole, octupole and (normal) dodecapole errors were introduced into the machine via the corrector magnets in the interaction regions. [...]
CERN-ACC-NOTE-2022-0021.
- 2022.

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2022-08-12
13:35
Crystal Channelling for Hadron Therapy Accelerators / Ng, Hoi Lun
In this study, the effect of crystal channelling in low energy (kinetic energy from 60 to 250MeV) proton beam which is the energy range required for hadron therapy treatments in a medical accelerator is investigated. [...]
CERN-STUDENTS-Note-2022-024.
- 2022.
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2022-08-12
11:25
CERN Summer Student 2022 AppLE.py modifications / Vasquez Jr, Robert William
AppLE.py is a Python-based program that generates a graphic user-interface for use of the Methodical Accelerator Design 10 (MADX) system. [...]
CERN-STUDENTS-Note-2022-019.
- 2022.
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2022-08-12
08:10
Simulation of Beam Formation in the CERN Negative Ion Source for the Linac4 Accelerator / Vnuchenko, A (CERN) ; Lettry, J (CERN) ; Mochalskyy, S (Garching, Max Planck Inst. Plasmaphys.) ; Wünderlich, D (Garching, Max Planck Inst. Plasmaphys.) ; Fantz, U (Garching, Max Planck Inst. Plasmaphys.) ; Revel, A (LPGP, Orsay) ; Minea, T (Garching, Max Planck Inst. Plasmaphys.)
Linac4 is the negative hydrogen ion (H$^{-}$) injector of the CERN accelerator complex. Modelling of the beam formation is essential for optimizing the current and emittance of the H$^{-}$ ion source. [...]
2022 - 5 p. - Published in : J. Phys. : Conf. Ser. 2244 (2022) 012042 Fulltext: PDF;
In : 19th International Conference on Ion Sources (ICIS 2021), Vancouver, BC, Canada, 20 - 24 Sep 2021, pp.012042

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2022-08-10
08:45
J-PARC Contributions to the LHC Injector Upgrade (LIU) Project / Ohmori, Chihiro (J-PARC) ; Paoluzzi, Mauro (CERN) ; Tamura, Fumihiko (J-PARC ; JAEA, Ibaraki) ; Hasegawa, Katsushi (J-PARC) ; Sugiyama, Yasuyuki (J-PARC) ; Shirakata, Masashi (J-PARC) ; Yoshii, Masahito (J-PARC)
The LHC Injector Upgrade (LIU) was launched in 2010 in synergy with the High Luminosity LHC (HL-LHC) project.^2) It includes the consolidation/upgrade of the PS Booster RF systems:^3,4) all the existing ferrite-loaded RF cavities are being replaced with wideband RF systems during the 2019–2020 long shut down. The magnetic-annealed cores improve the cavity performance and reduce the number of the straight sections for RF systems. [...]
2021 - 6 p. - Published in : JPS Conf. Proc. 33 (2021) 011006-1-011006-6 Fulltext: PDF;
In : J-PARC Symposium 2019, Tsukuba, Japan, 23 - 26 Sep 2019, pp.011006-1-011006-6

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2022-08-10
08:45
Targetry Challenges & HiRadMat / Harden, Fiona (CERN) ; Bouvard, Aymeric (CERN) ; Charitonidis, Nikolaos (CERN) ; Kadi, Yacine (CERN) /HiRadMat experiments and facility support teams Collaboration
HiRadMat is a unique user facility providing a controlled test environment for accelerator experiments investigating the effects of high energy, high intensity proton beam. HiRadMat uses a 440 GeV/c proton beam fastly-extracted from the CERN SPS and can currently provide a maximum pulse intensity of 3.5 × 10^13 protons. [...]
2021 - 9 p. - Published in : JPS Conf. Proc. 33 (2021) 011149-1-011149-9 Fulltext: PDF;
In : J-PARC Symposium 2019, Tsukuba, Japan, 23 - 26 Sep 2019, pp.011149-1-011149-9

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2022-08-05
06:25
Non-monotonic dependence of heat loads induced by electron cloud on bunch population at the LHC / Skripka, Galina (CERN ; Dubna, JINR) ; Iadarola, Giovanni (CERN) ; Mether, Lotta (CERN) ; Rumolo, Giovanni (CERN)
Electron cloud effects are among the main performance limitations for the operation of the Large Hadron Collider with 25 ns bunch spacing. Electrons impacting on the beam screens of the superconducting magnets induce a significant heat load reaching values close to the full cooling capacity available from the cryogenic system in some LHC sectors. [...]
2022 - 9 p. - Published in : Eur. Phys. J. Plus 137 (2022) 849 Fulltext: PDF;

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2022-08-05
06:25
Heat transfer of flow boiling carbon dioxide in vertical upward direction / Schmid, David (CERN ; Ecole Polytechnique, Lausanne) ; Verlaat, Bart (CERN) ; Petagna, Paolo (CERN) ; Revellin, Rémi (INSA, Villeurbanne) ; Schiffmann, Jürg (Ecole Polytechnique, Lausanne)
Heat transfer measurements of flow boiling Carbon Dioxide (CO$_2$) in vertical upward direction have been carried out with a dedicated test facility at the European Organization for Nuclear Research (CERN). The investigation covers saturation temperatures within a range of $-25 \degree \textrm{C} \leq T_{\mathrm{sat}} +5 \degree \textrm{C}$, mass velocities from 100kg m$^{-2}$ s$^{-1}$ $\leq G \leq $ 450 kg m$^{-2}$ s$^{-1}$ and heat fluxes of 5.3 kW m$^{-2}$ and 11.4 kW m$^{-2}$. [...]
2022 - 15 p. - Published in : Int. J. Heat Mass Transf. 196 (2022) 123246 Fulltext: PDF;

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2022-08-05
06:25
Key4hep — Turnkey Software for Future Colliders / Fernandez Declara, P (CERN) ; Ganis, G (CERN) ; Hegner, B (CERN) ; Helsens, C (CERN) ; Petric, M (CERN) ; Sailer, A (CERN) ; Volkl, V (CERN) ; Gaede, F (DESY) ; Madlener, T (DESY) ; Fang, W (Beijing, Inst. High Energy Phys.) et al.
Future collider experiments rely on a well-maintained software for their physics performance studies and detector optimisation. The Key4hep project aims to design and provide a common set of software tools that can be used by future or even present-day high-energy physics projects. [...]
2021 - 8 p. - Published in : Acta Phys. Pol. B 52 (2021) 1031 Fulltext: PDF;
In : XXVII Cracow Epiphany Conference on Future of particle physics, Online, Poland, Online, 7 - 10 Jan 2021, pp.1031

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