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Ostatnio dodane:
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 -


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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 - 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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2024-10-18
06:28
Reliability run and data analysis of the accelerated aging of present and future electrolytic capacitors installed in the protection systems of superconducting magnets of the Large Hadron Collider at CERN / Guasch-Martínez, J (CERN) ; Carrillo, D (CERN) ; de Nicolás, E (CERN) ; Bjorkhaug, E (CERN) ; Nowak, E (CERN) ; Pojer, M (CERN) ; Rodríguez-Mateos, F (CERN)
This study evaluates the lifetime and aging process of the aluminium electrolytic capacitors to be used in the new protection systems of the High Luminosity LHC superconducting magnets. The accelerated testing and analysis of several groups of capacitors aged for more than one year provided insights into their expected lifespan and aging process. [...]
2024 - 7 p. - Published in : JINST
Fulltext: PDF;
In : Topical Workshop on Electronics for Particle Physics 2023 (TWEPP 2023), Geremeas, Sardinia, Italy, 1 - 6 Oct 2023, pp.C03003

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2024-10-17
10:48
Improved CERN LHC layout and aperture models / Lampaki, Syrmatenia
Aperture models are of fundamental importance to design machine optics configurations and predict machine performance [...]
CERN-THESIS-2024-195 - Thessaloniki , Greece : Aristotle University of Thessaloniki, 2024-06-21 - 88.


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High Luminosity Large Hadron Collider (HL-LHC) (1,216)
HiLumi LHC (264)