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LHC Triplet Task Force Report
/ Arduini, Gianluigi (CERN) ; Bradu, Benjamin (CERN) ; Brodzinski, Krzysztof (CERN) ; Bruce, Roderik (CERN) ; Cerutti, Francesco (CERN) ; Ciccotelli, Alessia (University of Manchester (GB)) ; Deferne, Guy (CERN) ; Fartoukh, Stephane (CERN) ; Fessia, Paolo (CERN) ; Garion, Cedric (CERN) et al.
The excellent performance of the Large Hadron Collider (LHC) and the extension of Run 3 by one year have led to a significant increase of the expected integrated luminosity by the end of its operation and before the start of the High Luminosity LHC (HL-LHC), exceeding the design LHC integrated luminosity of 300 fb−1 for which the final focus region has been designed. [...]
CERN-ACC-2023-0004.
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2023. - 95 p.
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Machine Configuration for the 2023 Proton Run (MD7003)
/ Fartoukh, Stephane (CERN) ; Dilly, Joschua Werner (CERN) ; Hostettler, Michi (CERN) ; Iadarola, Giovanni (CERN) ; Jacquet, Delphine (CERN) ; Kostoglou, Sofia (CERN) ; Mirarchi, Daniele (CERN) ; Persson, Tobias Hakan Bjorn (CERN) ; Solfaroli Camillocci, Matteo (CERN) ; Sterbini, Guido (CERN) et al.
This note contains a condensed summary of the various beam tests which took place in 2022 in order to validate the machine configuration planned to be deployed for the 2023 proton run of the LHC, including in particular a combined ramp and anti-telescopic squeeze, the rotation of the external crossing angle in LHCb, and beam operation with up to 1.8 × 1011 p/b..
CERN-ACC-NOTE-2023-0005.
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2023.
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Report from LHC MD 3312: Replicating HL-LHC DA
/ Dilly, Joschua Werner (Humboldt University of Berlin (DE)) ; Albert, Markus (CERN) ; Carlier, Felix Simon (CERN) ; Coello De Portugal - Martinez Vazquez, Jaime Maria ; Dalena, Barbara (Université Paris-Saclay (FR)) ; Fol, Elena (CERN) ; Hofer, Michael (CERN) ; Maclean, Ewen Hamish (CERN) ; Malina, Lukas ; Persson, Tobias Hakan Bjorn (CERN) et al.
During MD3312 on the 30.10.2018 the non-linear conditions in the insertion regions of the planned HL-LHC were replicated to our best knowledge and within the capabilities of the hardware currently available in the LHC: A flat ATS-optics scheme of beta* = 15cm / 60cm in IP1 and IP5 was applied as well as sextupole, octupole and (normal) dodecapole errors were introduced into the machine via the corrector magnets in the interaction regions. [...]
CERN-ACC-NOTE-2022-0021.
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2022
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Beam Losses, Lifetime and Collimator Hierarchy
/ Bruce, R (CERN) ; D'Andrea, N (CERN) ; Martinez, A Fuster (CERN) ; Gorzawski, A (CERN) ; Mereghetti, A (CERN) ; Mirarchi, D (CERN) ; Patecki, M (CERN) ; Rossi, R (CERN) ; Salvachua Ferrando, B M (CERN) ; Camillocci, M Solfaroli (CERN) et al.
The aim of the LHC collimation system is to ensure a safe machine operation; it
provides the LHC with passive protection and minimises the risk of magnet
quenches induced by beam losses. In 2017, the LHC collimation system confirmed
its excellent performance, with no magnet quenches due to losses from
circulating beams while accommodating changes in machine configurations [...]
2019 - 8 p.
- Published in : (2019) , pp. 85-92
Fulltext: PDF;
In : 8th Evian Workshop on LHC beam operation, Evian Les Bains, France, 12 - 14 Dec 2017, pp.85-92
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LHC Configuration and Operational Scenario for Run 3
/ Fartoukh, Stephane (CERN) ; Kostoglou, Sofia (CERN) ; Solfaroli Camillocci, Matteo (CERN) ; Arduini, Gianluigi (CERN) ; Bartosik, Hannes (CERN) ; Bracco, Chiara (CERN) ; Brodzinski, Krzysztof (CERN) ; Bruce, Roderik (CERN) ; Buffat, Xavier (CERN) ; Calviani, Marco (CERN) et al.
After its second successful run period, the Large Hadron Collider (LHC) shut down for three years with the plan of being recommissioned in 2022 for a three-year physics production period, the Run 3. [...]
CERN-ACC-2021-0007.
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2021. - 33 p.
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Beam Measurements and Machine Learning at the CERN Large Hadron Collider
/ Arpaia, Pasquale (Naples U.) ; Azzopardi, Gabriella (CERN) ; Blanc, Frédéric (LPHE, Lausanne) ; Buffat, Xavier (CERN) ; Coyle, Loic (CERN ; LPHE, Lausanne) ; Fol, Elena (CERN ; Frankfurt U.) ; Giordano, Francesco (Naples U. ; CERN) ; Giovannozzi, Massimo (CERN) ; Pieloni, Tatiana (LPHE, Lausanne) ; Prevete, Roberto (Naples U.) et al.
This paper presents a review of the recent Machine Learning activities carried out on beam measurements performed at the CERN Large Hadron Collider. This paper has been accepted for publication in IEEE Instrumentation and Measurement Magazine and in the published version no abstract is provided..
arXiv:2107.12641.-
2021-11-18 - 26 p.
- Published in : IEEE Instrum. Measur. Mag. 24 (2021) 47-58
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LHC Run 3 Configuration Working Group Report
/ Karastathis, N ; Barnes, M (CERN) ; Bartosik, H (CERN) ; Brodzinski, K (CERN) ; Buffat, X (CERN) ; Cerutti, F (CERN) ; Fartoukh, S (CERN) ; Goddard, B (CERN) ; Iadarola, G (CERN) ; Naour, S Le (CERN) et al.
After its second successful run period, the Large Hadron Collider (LHC) [1]
shuts down for two years with the plan of being recommissioned in 2021 for a
three-year physics production period, the Run 3. The future restart of the LHC
coincides with the completion of the LHC Injectors Upgrade (LIU) project [2],
offering to the LHC the opportunity and the challenge to operate with up to two
times higher beam brightness. [...]
Geneva, Switzerland : , 2019 - 12 p.
- Published in : , pp. 273-284
Fulltext: PDF;
In : 9th LHC Operations Evian Workshop, Evian Les Bains, France, 30 Jan - 1 Feb 2019, pp.273-284
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Combined ramp and telescopic squeeze
/ Fartoukh, Stephane (CERN) ; Azzopardi, Gabriella (CERN) ; Bruce, Roderik (CERN) ; Buffat, Xavier (CERN) ; Coello De Portugal - Martinez Vazquez, Jaime Maria ; Fuster Martinez, Nuria ; Iadarola, Giovanni (CERN) ; Karastathis, Nikos ; Kostoglou, Sofia (CERN) ; Maclean, Ewen Hamish (CERN) et al.
This paper highlights the outcome of the 2018 round ATS MD program, which aimed at demonstrating the feasibility of a combined ramp and telescopic squeeze as a potential key ingredient to operate the machine in Run 3, with much brighter and more energetic beams with respect to Run 2. [...]
CERN-ACC-2020-0028.
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2020. - 40 p.
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MD 3603: Dynamic Aperture with uncorrected dipole b3
/ Hofer, Michael (Vienna University of Technology (AT)) ; Carlier, Felix Simon (Technische Universiteit Delft (NL)) ; Dilly, Joschua Werner (Humboldt University of Berlin (DE)) ; Fol, Elena (Goethe University Frankfurt (DE)) ; Garcia-Tabares Valdivieso, Ana (Universidad Complutense (ES)) ; Maclean, Ewen Hamish (CERN) ; Malina, Lukas (CERN) ; Persson, Tobias Hakan Bjorn (CERN) ; Coello De Portugal - Martinez Vazquez, Jaime Maria ; Solfaroli Camillocci, Matteo (CERN) et al.
The hadron collider options currently investigated as part of the FCC study rely on the use of dipoles with a field strength of 16 T or above in order to achieve the targeted collision energy. [...]
CERN-ACC-NOTE-2020-0049.
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2020. - 22 p.
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