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CERN Accelerating science

All CERN Accelerators documents

Announcement
This new collection aggregates CERN accelerator-related documents on CDS. It will continuously be enriched and improved in the near future.
Latest additions:
2025-05-30
16:00
Efficient Field Map Generation for the SHiP Muon Shield Optimization / Liebsch, Melvin (CERN) /SHiP Collaboration
The design of the SHiP Muon shield requires the evaluation of realistic, three dimensional field maps in normal and superconducting magnets within the optimization loop. The Sn∞.py python package provides a lightweight 3D FEM solver based on the reduced vector potential formulation. [...]
CERN-SHiP-INT-2025-003.- Geneva : CERN, 2025

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2025-05-29
08:37
Impact of beam coupling impedance on crab cavity noise induced emittance growth / Triantafyllou, N (CERN ; Liverpool U.) ; Antoniou, F (CERN) ; Bartosik, H (CERN) ; Baudrenghien, P (CERN) ; Buffat, X (CERN) ; Calaga, R (CERN) ; Papaphilippou, Y (CERN) ; Mastoridis, T (Cal. Poly.) ; Wolski, A (Liverpool U.)
Crab cavities will be deployed as a part of the High Luminosity Large Hadron Collider (HL-LHC) upgrade to mitigate the luminosity reduction induced by the crossing angle at the main experiments (ATLAS and CMS). Two prototype crab cavities have been installed in the CERN Super Proton Synchrotron (SPS) in 2018 for studies with proton beams. [...]
2024 - 15 p. - Published in : Phys. Rev. Accel. Beams 27 (2024) 071001 Fulltext: PDF;

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2025-05-29
08:37
Hardware design of a high-current, high step-down ratio Series Capacitor Buck converter prototype for slow-ramped powering of High-Luminosity Large Hadron Collider inner triplet superconducting electromagnets / Otero-Olavarrieta, Alberto (Basque U., Bilbao) ; Matallana, Asier (Basque U., Bilbao) ; Martínez de Alegría, Iñigo (Basque U., Bilbao) ; Ibarra, Edorta (Basque U., Bilbao) ; Arias, Antoni (Barcelona, Polytechnic U.) ; de Mallac, Louis (CERN) ; Pittet, Serge (CERN)
In this work, the main hardware design aspects of a slow-ramped DC/DC power converter prototype, developed to feed superconducting inner triplet (IT) electromagnets for the High Luminosity (HL) upgrade of the Large Hadron Collider (LHC), is presented. The proposal comprises a two-quadrant multiphase interleaved converter, based on the Series Capacitor Buck architecture, which operates at very high-current and high step-down ratio conditions. [...]
2024 - 19 p. - Published in : Appl. Energy 371 (2024) 123730 Fulltext: PDF;

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2025-05-29
08:37
Numerical simulation of large tunnel alignments under seismic loading: The Large Hadron Collider as a case study / Mubarak, A G (CERN ; Dundee U.) ; Knappett, J A (U. Dundee) ; Brown, M J (U. Dundee)
Three-dimensional seismic analysis of large tunnel alignments using the continuum (Finite-Element; FE) modelling technique can be computationally expensive. This is due to the extended length of tunnels compared to their diameter (which controls the local ground-structure interaction and hence, the required maximum FE element size). [...]
2024 - 14 p. - Published in : Tunnelling and Underground Space Technology incorporating Trenchless Technology Research 157 (2025) 106315 Fulltext: PDF;

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2025-05-28
07:13
GENERALIZATION OF C++-BASED DSP SOFTWARE FOR VOLTAGE SOURCE REGULATION AND CONTROL OF DIVERSE POWER CONVERTERS IN PARTICLE ACCELERATORS / Pinillos Zamorano, Nagore (CERN) ; de Mallac, Louis (CERN) ; Zielinski, Dariusz Jakub (CERN) ; Ibarra Basabe, Edorta (Basque U., Bilbao) ; Pittet, Serge (CERN) ; Murillo Garcia, Raul (CERN) ; Martinez de Alegria, Iñigo (Basque U., Bilbao)
Large particle accelerator facilities such as the one at The European Organization for Nuclear Research (CERN) are good examples of complex systems where a large variety of switched power converters coexist to feed the acceleration systems. Over the years, the low-level voltage source regulation software has evolved in a decentralized manner, making it repetitive and difficult to test, debug and maintain. [...]
2025 - 15 p. - Published in : DYNA 100 (2025) 137-144 Fulltext: PDF;

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2025-05-27
07:14
Comparative feasibility study of partial power converter for interfacing battery energy storage into power system of future circular collider / Chub, Andrii (Tallinn U. Tech.) ; Niinemägi, Joosep (Tallinn U. Tech. ; CERN) ; Colmenero, Manuel (CERN) ; Aguglia, Davide (CERN)
The recent appearance of partial power converters has shown their potential to significantly improve the efficiency and power density of power electronic systems. However, their feasibility in different applications is not sufficiently studied. [...]
2024 - 20 p. - Published in : Proceedings of the Estonian Academy of Sciences 73 (2024) 396-415 Fulltext: PDF; External link: Fulltext

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2025-05-27
07:14
Energy Recovery LINACs -- an Overview / Arnold, Michaela (Darmstadt, Tech. U.)
The seminar on energy recovery linacs (ERLs) is giving an overview of the field: How does an ERL work? What have been important milestones in ERL history? What are the reasons to use an ERL instead of a conventional accelerator? As examples of the landscape of machines, ranging from ancient ERLs up to future projects, this chapter will give results of the runs from CBETA (USA) and S-DALINAC (Germany). [...]
arXiv:2504.20665.
- 2025 - 13.
Fulltext

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2025-05-23
06:58
30 Years of Electronics Evolution for CERN Safety Radiation Monitoring / Boukabache, Hamza (CERN) ; Mohanan, Sarath Kundumattathil (CERN) ; Ducos, Gael (CERN) ; Laforge, Clyde (CERN) ; Pangallo, Michel (CERN) ; Perrin, Daniel (CERN) ; Roesler, Stefan (CERN) ; Widorski, Markus (CERN) ; Forkel-Wirth, Doris (CERN)
2024 - 10 p. - Published in : 10.1109/tns.2024.3352410 Fulltext: PDF;

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2025-05-23
06:58
App-Based Tool for Automatic Controller Parameters Assessment for Power Converters in Particle Accelerator Facilities / Maestri, Sebastian O (Buenos Aires, CONICET ; La Plata U.) ; Le Godec, Gilles (CERN) ; Michels, Olivier (CERN)
Regulation coefficients assessment in a particle accelerator power conversion system depends on the topology, the magnet and the desired transient response. The series/parallel combination of a generic power converter (a brick) to develop a larger one (e.g., the SIRIUS power converter family developed at CERN) allows to feed several magnets with different parameters. [...]
2024 - 9 p. - Published in : IEEE Open J. Indust. Appl. 5 (2024) 405-413 Fulltext: PDF;

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2025-05-22
06:29
The HEARTS EU Project and Its Initial Results on Fragmented High-Energy Heavy-Ion Single-Event Effects Testing / García Alía, Rubén (CERN) ; Waets, Andreas (CERN ; Zurich U.) ; Coronetti, Andrea (CERN ; IES, Montpellier) ; Bilko, Kacper (CERN ; Jean Monnet U.) ; Delrieux, Marc (CERN) ; Emriskova, Natalia (CERN) ; Esposito, Luigi (CERN) ; Fraser, Matthew (CERN) ; Johnson, Eliott (CERN) ; Klimek, Karolina (CERN) et al.
We perform single-event effect (SEE) tests with well-characterized fully fragmented (i.e., beyond Bragg peak) high-energy heavy-ion beams and compare the results with those expected from conventional, mono-linear energy transfer (mono-LET) measurements, showing a satisfactory level of agreement between the two. This compliance paves the way for the exploitation of simulation tools for accurately quantifying the ion fragmentation impact on SEE rates for both ground-level testing conditions and space galactic cosmic-ray (GCR) environments, with electronics operating behind significant thicknesses of shielding. [...]
2025 - 10 p. - Published in : IEEE Trans. Nucl. Sci. 72 (2025) 1040-1049 Fulltext: PDF;

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