CERN Accelerating science


LHC injection optics commissioning in 2021 and 2022 / Persson, Tobias Hakan Bjorn (CERN) ; Carlier, Felix Simon (CERN) ; Dilly, Joschua Werner (CERN) ; Fartoukh, Stephane (CERN) ; Fol, Elena (CERN) ; Garcia Morales, Hector ; Hofer, Michael (CERN) ; Keintzel, Jacqueline (CERN) ; Maclean, Ewen Hamish (CERN) ; Malina, Lukas et al.
LHC injection optics commissioning in 2021 and 2022
- 2023.

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Chromaticity measurement using the beam transfer function (MD 6803) / Buffat, Xavier (CERN) ; Giacomel, Lorenzo (CERN) ; Mounet, Nicolas (CERN) ; Soderen, Martin
Chromaticity measurement at the LHC is based on energy modulation which is incompatible with high intensity beam operation. [...]
- 2023. - 10 p.
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Radiological characterization for the disposal of a decommissioned LHC external beam dump at CERN / Infantino, Angelo (CERN) ; Harbron, Richard William (CERN) ; Mouret, Renaud (CERN) ; Bertreix, Philippe (CERN) ; Bernardes, Ana-Paula (CERN) ; Bruno, Luca (CERN) ; Calviani, Marco (CERN) ; Dumont, Gerald (CERN) ; El-Idrissi, Safouane (CERN) ; Magistris, Matteo (CERN) et al.
During the last Long Shutdown, a scheduled maintenance period between physics runs, the two Large Hadron Collider (LHC) beam dumps were replaced with upgraded spares modules. It was then decided to conduct an in-house autopsy and a post-irradiation examination of the removed dumps to extract information essential for the 3rd LHC physics run and to aid the design of new generations of beam dumps able to cope with future upgrades of the LHC. [...]
2023 - 13 p. - Published in : Eur. Phys. J. Plus 138 (2023) 692 Fulltext: PDF;

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Anomaly Detection with Artificial Intelligence: Post-mortem analysis of LHC ion beam losses during high-energy beam dumps / Schumacher, Thorsten Martin
The analysis of beam losses and detection of anomalies during particle collision experiments in the Large Hadron Collider is of paramount importance to ensure the integrity and safety of the machine’s equipment [...]
CERN-THESIS-2023-122 - 130 p.

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Software development for a high-speed digitizer to provide online access to longitudinal bunch profiles in the Large Hadron Collider / Joul, Juri
Particle accelerators such as the Large Hadron Collider (LHC) strive for high luminosity in order to produce as much data for physics experiments as possible [...]
CERN-THESIS-2023-113 - 64 p.

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Design and Commissioning of the First 32-Tbit/s Event-Builder / Pisani, Flavio (CERN) ; Colombo, Tommaso (CERN) ; Durante, Paolo (CERN) ; Frank, Markus (CERN) ; Gaspar, Clara (CERN) ; Granado Cardoso, Luis (CERN) ; Neufeld, Niko (CERN) ; Perro, Alberto (CERN ; INFN, Turin ; Turin U.)
The large hadron collider beauty (LHCb) experiment is a forward spectrometer, designed to study beauty and charm quarks physics at the large hadron collider (LHC). To exploit of the higher luminosity that will be delivered during Run3, the full experiment needed a substantial upgrade, from the detector to the data acquisition (DAQ) and high level trigger (HLT). In this article, we will focus on the new DAQ system for the LHCb experiment that represents a substantial paradigm shift compared to the previous one, and to similar systems used by similar experiments in the past and present times. [...]
2023 - 8 p. - Published in : IEEE Trans. Nucl. Sci.
Fulltext: PDF; Publication: PDF;
In : 23rd IEEE Real Time Conference (RT2022), Online, 1 - 5 Aug 2022, pp.906-913

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Energy deposition studies for the LHCb insertion region of the CERN Large Hadron Collider / Ciccotelli, Alessia (Manchester U. ; CERN) ; Appleby, Robert B (Manchester U.) ; Cerutti, Francesco (CERN) ; Bilko, Kacper (CERN) ; Esposito, Luigi Salvatore (CERN) ; Garcia Alia, Ruben (CERN) ; Lechner, Anton (CERN) ; Tsinganis, Andrea (CERN)
The LHCb (Large Hadron Collider beauty) experiment at CERN LHC aims at achieving a significantly higher luminosity than originally planned by means of two major upgrades: the Upgrade I that took place during the Long Shutdown 2 (LS2) and the Upgrade II proposed for LS4. Such an increase in instantaneous and integrated luminosity with respect to the design values requires to reassess the radiation exposure of LHC magnets, cryogenics, and electronic equipment placed in the insertion region 8 (IR8) around LHCb. [...]
2023 - 14 p. - Published in : Phys. Rev. Accel. Beams 26 (2023) 061002 Fulltext: PDF;

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Diffusive models and chaos indicators for non-linear betatron motion in circular hadron accelerators / Montanari, Carlo Emilio
Understanding the complex dynamics of beam-halo formation and evo- lution in circular particle accelerators is crucial for the design of current and future rings, particularly those utilizing superconducting magnets such as the CERN Large Hadron Collider (LHC), its luminosity upgrade HL-LHC, and the [...]
CERN-THESIS-2023-091 - 217 p.


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Compensation of residual field from hollow electron lens asymmetries in the Large Hadron Collider / Rakic, Milica
The Large Hadron Collider (LHC) is currently the largest hadron collider in the world [...]
CERN-THESIS-2022-366 - 44 p.

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Algorithms for Tune Estimation and Damper Control / Menor De Onate, Adrian (Delft University of Technology (NL)) ; Kotzian, Gerd (CERN)
This Project within an internship in the radio frequency group aims to explore different methods of extracting the tune from transverse feedback and pick-up data streams. [...]
- 2023. - 27 p.
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