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CERN Accelerating science

LHC

最近の追加:
2025-09-26
15:15
Chamonix Workshop 2025 Summary / Carra, Federico (CERN) ; Charitonidis, Nikolaos (CERN) ; Papotti, Giulia (CERN) ; Sterbini, Guido (CERN)
The Chamonix Workshop 2025 took place from 27 to 30 January 2025 in the "Majestic" conference centre in Chamonix. [...]
CERN-ACC-NOTE-2025-0019.
- 2025 - 68.
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2025-09-26
12:45
Shutter-type multi-point optical alignment using a Structured Laser Beam in vacuum / Niewiem, Witold Grzegorz (ETH, Zurich (main) ; CERN) ; Figura, Sebastian Antoni (CERN) ; Dusek, Martin (Liberec Tech. U. ; CERN) ; Mergelkuhl, Dirk (CERN) ; Gayde, Jean-Christophe (CERN) ; Wieser, Andreas (ETH, Zurich (main))
This paper presents an alignment concept employing a Structured Laser Beam (SLB) for offset measurements over a 140 m distance. The prototype consists of an SLB generator and three measurement stations within a vacuum system. [...]
CERN-ACC-2025-0003.- Geneva : CERN, 2025 - 19 p. - Published in : JINST 20 (2025) P07001 Fulltext: PDF;

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2025-09-05
10:32
Chromaticity measurement in physics conditions with BTF and ADT-AC dipole (MD13463) / Buffat, Xavier (CERN) ; Giacomel, Lorenzo ; Mounet, Nicolas (CERN) ; Paraschou, Konstantinos ; Trad, Georges (CERN) ; Valuch, Daniel (CERN)
The result of an experiment demonstrating the readiness of the tools put in place to measure chromaticity through beam transfer function measurement on a single bunch while the full physics beam is circulating is presented. [...]
CERN-ACC-2025-0002.
- 2025 - 8.
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2025-09-04
11:10
An Interferometric Multi-Sensor Absolute Distance Measurement System for Use in Harsh Environments / Sosin, Mateusz (CERN) ; Gonzalez Cobas, Juan David (CERN) ; Mohammed, Isa (Nottingham U.) ; Leach, Richard (Nottingham U.) ; Lipinski, Maciej Marek (CERN) ; Rude, Vivien (CERN) ; Rutkowski, Jaroslaw Marek ; Watrelot, Leonard
Fourier transform-based frequency sweeping interferometry (FT-FSI) is an interferometric technique that enables absolute distance measurement by detecting the beat frequencies from the interference of reflected signals. [...]
CERN-ACC-NOTE-2025-0017.
- 2025 - 33.

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2025-07-31
06:15
Feasibility study of the Alice fixed-target experiment with HL-LHC lead ion beams based on crystal-assisted beam Halo splitting / Patecki, Marcin (Warsaw U. of Tech. (main)) ; Monikowska, Marta (Warsaw U. of Tech. (main))
The Large Hadron Collider (LHC) at the European Organization for Nuclear Research (CERN) is the world's largest and most powerful particle accelerator, colliding beams of protons and lead ions at energies up to 7 ZTeV. ALICE is one of the detector experiments optimized for heavy-ion collisions.A fixed-target experiment in ALICE is considered to collide a portion of the beam halo, split using a bent crystal, with an internal target placed a few meters upstream of the detector. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) MOPC21 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPC21

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2025-07-24
15:39
LGC open-source: A strategy to share adjustment software and algorithmic development / Kautzmann, Guillaume (CERN) ; Gutekunst, Juergen (CERN) ; Klumb, Francis (CERN) ; Elson, Philip (CERN)
LGC (Logiciel Général de Compensation) is a software that computes position estimates and associated statistics based on observations obtained by CERN surveyors. [...]
CERN-ACC-NOTE-2024-0038.
- 2024 - 6.
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2025-07-24
15:34
Alignment strategy for the High-Luminosity Large Hadron Collider / Mainaud Durand, Helene (CERN) ; Barbarroux, Vincent Thomas (CERN) ; Behrens, Antje (CERN) ; Bestmann, Patrick (CERN) ; Fuchs, Jean-Frederic (CERN) ; Gayde, Jean-Christophe (CERN) ; Kautzmann, Guillaume (CERN) ; Klumb, Francis (CERN) ; Mergelkuhl, Dirk (CERN) ; Naegely, Anne-Valerie (CERN) et al.
The High Luminosity Large Hadron Collider (HL-LHC) project is an upgrade of the LHC to enable continuous operation at luminosities which are a factor of five above the LHC design value. [...]
CERN-ACC-NOTE-2024-0037.
- 2024 - 6.
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2025-07-24
15:29
Development of a new levelling process integrated into a 3D global calculation / Fuchs, Jean-Frederic (CERN) ; Segers, Jean-Francois ; Vendeuvre, Camille (CERN)
CERN surveyors have traditionally used the 2D + 1 method for beamline smoothing, where computing the planimetric (XY) and altimetric (H) data performed independently and separately. [...]
CERN-ACC-NOTE-2024-0036.
- 2024 - 7.
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2025-07-24
15:18
Alignment system tests on the CERN remote alignment system mock-up / Sosin, Mateusz (CERN) ; Barbarroux, Vincent Thomas (CERN) ; Biedrawa, Piotr ; Calmels, Julia Anna Jeanne ; Dandekar, Mamta Shrikrishna ; Falcao Machado, Joao Luis ; Fernandez Bautista, Roberto (CERN) ; Herty, Andreas (CERN) ; Kampp, Jonas ; Jasonek, Wojciech (AGH University of Krakow (PL)) et al.
The High Luminosity upgrade of the Large Hadron Collider (HL-LHC) aims to enable continuous operation at luminosities which are a factor of five above the LHC design value. [...]
CERN-ACC-NOTE-2024-0035.
- 2024 - 8.
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2025-07-24
15:10
A next generation survey train for future accelerators / Bestmann, Patrick (CERN) ; Barcet, Florian ; Mergelkuhl, Dirk (CERN)
The increasing dimensions and constraints for next- generation accelerators are driving the development of new methods and strategies for automated alignment measurements [...]
CERN-ACC-NOTE-2024-0034.
- 2024 - 5.
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High Luminosity Large Hadron Collider (HL-LHC) (1,235)
HiLumi LHC (264)