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:
2024-03-18
11:47
Characterisation and modification of copper surfaces for cryogenic vacuum components of particle accelerators / Stranelova, Eva (University of Chemistry and Technology Prague (CZ))
The development of an electron cloud (e-cloud) in the Large Hadron Collider (LHC), caused by electron multipacting, is responsible for several problems in the accelerator operation, e.g. degradation of the beam quality and heat loads on the cryogenic system of superconducting magnets. [...]
CERN-THESIS-2023-360.- 80 p. Fulltext: PDF; External link: Approve this document (restricted)

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2024-03-18
11:22
An ultra-high vacuum system for secondary electron yield measurements and electron-conditioning of particle accelerators materials at cryogenic temperatures: commissioning and first experiments / Marinoni, Stefano (Politecnico di Milano (IT))
In the Large Hadron Collider (LHC), the avalanche multiplication of electrons inside the vacuum chamber drives the build-up of an electron cloud, which can impact the performance of the accelerator as it causes a substantial heat load to the cryogenic system. The evolution of the beam pipe chemical state and secondary electron emission properties under the electron cloud activity is known as surface conditioning. [...]
CERN-THESIS-2022-410.- 127 p. Fulltext: PDF; External link: Approve this document (restricted)

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2024-03-15
15:39
Local Interaction Region Coupling Correction for the LHC / Soubelet, Felix
In order to further expand our knowledge of the structure of matter and the workings of our universe, scientists are constantly seeking to collide particles at ever-increasing energies and with higher luminosity. So is the task of the Large Hadron Collider (LHC) at CERN, the highest energy particle accelerator and collider to date, and the goal of its future upgrade into the High-Luminosity Large Hadron Collider (HL-LHC). [...]
CERN-THESIS-2023-357.- 205 p. Fulltext: PDF; External link: Approve this document (restricted)

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2024-03-14
17:53
MACHINA, the Movable Accelerator for Cultural Heritage In-situ Non-destructive Analysis: project overview / Taccetti, F (INFN, Florence) ; Castelli, L (INFN, Florence) ; Chiari, M (INFN, Florence) ; Czelusniak, C (INFN, Florence) ; Falciano, S (INFN, Rome ; GSSI, Aquila) ; Fedi, M (INFN, Florence) ; Giambi, F (INFN, Florence ; Florence U.) ; Mandò, P A (INFN, Florence ; Florence U.) ; Manetti, M (INFN, Florence) ; Massi, M (INFN, Florence) et al.
Over the years, transportable instrumentation for cultural heritage (CH) in situ measurements has noticeably widespread, due to logistic, economical and safety reasons. Ion beam analysis, a powerful set of analytical techniques, of great importance for CH, is instead carried out by using fixed instrumentation. [...]
2023 - 19 p. - Published in : Rend. Lincei Sci. Fis. Nat. 34 (2023) 427-445 Fulltext: PDF;

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2024-03-14
17:53
FOCUS: fast Monte Carlo approach to coherence of undulator sources / Siano, M (Milan U. ; INFN, Milan) ; Geloni, G (European XFEL, Hamburg) ; Paroli, B (Milan U. ; INFN, Milan) ; Butti, D (CERN) ; Lefèvre, T (CERN) ; Mazzoni, S (CERN) ; Trad, G (CERN) ; Iriso, U (CELLS - ALBA, LLS) ; Nosych, A A (CELLS - ALBA, LLS) ; Torino, L (CELLS - ALBA, LLS) et al.
FOCUS (Fast Monte CarlO approach to Coherence of Undulator Sources) is a new GPU-based simulation code to compute the transverse coherence of undulator radiation from ultra-relativistic electrons. The core structure of the code, which is written in the language C++ accelerated with CUDA, combines an analytical description of the emitted electric fields and massively parallel computations on GPUs. [...]
2023 - 10 p. - Published in : J. Synchrotron Radiat. 30 (2023) 217-226 Fulltext: PDF;

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2024-03-14
17:53
Analysis of Powering and Quench Protection of the SIGRUM Superconducting Combined-Function Dipole Magnet / Ferrentino, Vittorio (Naples U. ; CERN) ; Arpaia, Pasquale (Naples U. ; CERN) ; Gilardi, Antonio (SLAC) ; Karppinen, Mikko (CERN) ; Kokkinos, Charilaos ; Ravaioli, Emmanuele (CERN)
In particle accelerators devoted to hadron therapy treatments, the magnet design plays an essential role in ensuring the safety of the patients under treatment. An incorrect setting or malfunctioning may cause damage to healthy tissues and cells. [...]
2023 - 8 p. - Published in : IEEE Trans. Appl. Supercond. 33 (2023) 1-8

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2024-03-14
17:53
Application of Proton Irradiation in the Study of Accelerated Radiation Ageing in a GaAs Semiconductor / Neuhold, Igor (Bratislava, Slovak Tech. U. ; CERN) ; Noga, Pavol (Bratislava, Slovak Tech. U.) ; Sojak, Stanislav (Bratislava, Slovak Tech. U.) ; Petriska, Martin (Bratislava, Slovak Tech. U.) ; Degmova, Jarmila (Bratislava, Slovak Tech. U.) ; Slugen, Vladimir (Bratislava, Slovak Tech. U.) ; Krsjak, Vladimir (Bratislava, Slovak Tech. U.)
Proton irradiation experiments have been used as a surrogate for studying radiation effects in numerous materials for decades. The abundance and accessibility of proton accelerators make this approach convenient for conducting accelerated radiation ageing studies. [...]
2023 - 11 p. - Published in : Materials 16 (2023) 1089 Fulltext: PDF;

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2024-03-14
17:53
DC Powering Solutions for the Future Circular Collider: Converter Topologies, Protection, and Control / Colmenero, Manuel (CERN) ; Blanquez, Francisco Rafael (CERN) ; Blasco-Gimenez, Ramon (Valencia U., IFIC)
The future circular collider (FCC) is a cutting-edge particle accelerator being planned by the European Organization for Nuclear Research (CERN). It is designed to delve deeper into the mysteries of the universe than its predecessor, the large hadron collider (LHC). [...]
2023 - 15 p. - Published in : IEEE Open J. Indust. Electron. Soc. 4 (2023) 694-708 Fulltext: PDF;

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2024-03-14
17:53
Growth of Nb films on Cu for superconducting radio frequency cavities by direct current and high power impulse magnetron sputtering: A molecular dynamics and experimental study / Ghaemi, M (Helsinki Inst. of Phys.) ; Lopez-Cazalilla, A (Helsinki Inst. of Phys.) ; Sarakinos, K (Helsinki U. ; Royal Inst. Tech., Stockholm) ; Rosaz, G J (CERN) ; Carlos, C P A (CERN) ; Leith, S (CERN) ; Calatroni, S (CERN) ; Himmerlich, M (CERN) ; Djurabekova, F (Helsinki Inst. of Phys.)
The use of superconducting radio frequency (rf) cavities in particle accelerators necessitates that copper (Cu) surfaces are coated by thin niobium (Nb) films, predominantly synthesized by magnetron sputtering. A key feature of the rf cavities is that they exhibit a complex three-dimensional geometry, such that during Nb film growth vapor is not deposited on a flat substrate [...]
2024 - 11 p. - Published in : Surf. Coat. Technol. 476 (2024) 130199 Fulltext: PDF;

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2024-03-14
17:53
Enhanced Human–Robot Interface With Operator Physiological Parameters Monitoring and 3D Mixed Reality / Szczurek, Krzysztof Adam (CERN) ; Cittadini, Roberto (CERN) ; Prades, Raul Marin ; Matheson, Eloise (CERN) ; Di Castro, Mario (CERN)
Remote robotic interventions and maintenance tasks are frequently required in hazardous environments. Particularly, missions with a redundant mobile manipulator in the world’s most complex machine, the CERN Large Hadron Collider (LHC), are performed in a sensitive underground environment with radioactive or electromagnetic hazards, bringing further challenges in safety and reliability [...]
2023 - 22 p. - Published in : IEEE Access 11 (2023) 39555-39576 Fulltext: PDF;

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