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2025-01-03
13:38
Measurement of the associated production of a W boson and a charm quark in proton-proton collisions at $\sqrt{s}=13$ TeV with the CMS detector at the LHC / Sanchez Navas, Sergio (Consejo Superior de Investigaciones Cientificas (CSIC) (ES))
Scientific knowledge experienced an age of explosion during the XX century, fruitful in discoveries that radically changed the perspective we had of Nature. Our current quest is, however, to continue questioning the fundamental aspects of everything that surrounds us, to test until the very end how far the great theories can go, and to pursue with the undeniable task of human restlessness to answer the question ``and why is that?”. [...]
CERN-THESIS-2023-431.- 123 p. Fulltext: PDF; External link: Approve this document (restricted)

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2024-12-20
12:11
Long-range beam-beam mitigation for round optics / Fartoukh, Stephane (CERN) ; Kostoglou, Sofia (CERN)
When colliding high intensity bunch trains at low beta*, a sufficiently large crossing angle needs to be imposed at the interaction point (IP) in order to separate the two beams before and after the collision, and mitigate the so-called long-range beam-beam (BBLR) effect, which otherwise can be very detrimental to the beam lifetime. [...]
CERN-ACC-NOTE-2023-0029. - 2023

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2024-12-06
06:16
Effects of Cavity Pre-Detuning on RF Power Transients at Injection into the LHC / Karlsen-Bæck, Birk Emil (CERN ; Rome U.) ; Argyropoulos, Theodoros (CERN) ; Butterworth, Andrew (CERN) ; Calaga, Rama (CERN) ; Karpov, Ivan (CERN) ; Timko, Helga (CERN) ; Zampetakis, Michail (CERN)
At injection into the LHC, the RF system is perturbed by beam-induced voltage resulting in strong RF power transients and the instant detuning of the cavities. The automatic tuning system, however, needs time for the mechanical compensation of the resonance frequency to take place. [...]
2024 - 4 p. - Published in : JACoW HB 2023 (2024) 530-533 Fulltext: PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.530-533

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2024-12-02
12:20
Optics Measurements with the Transverse Damper in the Large Hadron Collider / Nissinen, Tuuli
Effective control of beam optics is critical for achieving the luminosity targets in particle colliders such as the Large Hadron Collider (LHC) [...]
CERN-THESIS-2024-245 - 2024 - 67.


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2024-11-30
06:10
Precision luminosity measurement at hadron colliders / Wanczyk, Joanna Malgorzata
This thesis links two realms of particle accelerator dynamics and precision particle physics [...]
2024 - 171.


10.5075/epfl-thesis-10500

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2024-11-13
02:50
Impact of beam-beam effects and linear coupling resonance on the absolute luminosity calibration at the CERN Large Hadron Collider / Zhang, Chenying
In colliders such as the CERN Large Hadron Collider (LHC), luminosity represents the ratio between the event rate at a particle detector and the cross section of the particle physics event being measured [...]
CERN-THESIS-2024-227 - 2024 - 60.


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2024-11-06
14:12
Future Ions in the CERN Accelerator Complex WG: Post-LS3 NA61/SHINE light ion beam requirements feasibility study: source operation, radiation protection impact in LINAC 3, LEIR and PS and risk assessment in LEIR / Alemany Fernandez, Reyes (CERN) ; Chapuis, Didier (CERN) ; Kuchler, Detlef (CERN) ; Lang, Thibaut Michael (CERN) ; Morand, Boris (CERN) ; Slupecki, Maciej (CERN) ; Widorski, Markus (CERN)
The NA61/SHINE experiment is approved until Long Shutdown 3. [...]
CERN-ACC-NOTE-2024-0020. - 2024
Full text

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2024-10-31
12:12
The Universe in a Cake! A Dark Matter Cake Recipe & Explainer / Leney, Katharine (Southern Methodist University (US))
This handout includes a cake recipe and an explainer about the composition of the universe — covering visible matter, dark matter, and dark energy. [...]
ATLAS-OUTREACH-2024-026. - 2024 - 3.
Language: English

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2024-10-31
06:04
High voltage consolidation of the temperature measurement channels of the LHC superconducting current leads / Trikoupis, N (CERN) ; Casas-Cubillos, J (CERN) ; Bustamante, E (CERN)
Recurrent dielectric breakdowns on the cryogenics instrumentation during the CERN LHC Electrical Quality Assurance (ELQA) campaigns led to an investigation of their root causes. During the CERN Long Shutdown 2 (LS2), several weaknesses were identified like floating wires or cable screens, cabling non-conformities, connector assembly issues, and weakness of the electronic conditioning cards. [...]
2023 - 8 p. - Published in : JINST 18 (2023) C02010
In : Topical Workshop on Electronics for Particle Physics 2022 (TWEPP 2022), Bergen, Norway, 19 - 23 Sep 2022, pp.C02010

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2024-10-30
15:31
LHC Availability Report 2023 / Felsberger, Lukas (CERN) ; Asko, Anti (CERN) ; Heron, Jack (CERN) ; Hostettler, Michi (CERN) ; Mikulec, Bettina (CERN) ; Uythoven, Jan (CERN) ; Wollmann, Daniel (CERN)
This document summarises the LHC availability during 2023 and compares it to previous years. [...]
CERN-ACC-NOTE-2024-0019. - 2024 - 22.
Full text

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High Luminosity Large Hadron Collider (HL-LHC) (1,217)
FP7 HiLumi LHC Design Study (264)