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First considerations on the supporting structures of FCC-ee booster and collider in the arc regions
/ Carra, F (CERN) ; Baudin, L (CERN) ; Bauche, J (CERN) ; Artoos, K (CERN) ; Atieh, S (CERN) ; Bertarelli, A (CERN) ; Brunner, O (CERN) ; Capatina, O (CERN) ; Chance, A (Saclay) ; Chemli, S (CERN) et al.
In 2022, the FCC Feasibility Study management mandated aworking group to analyse the best configuration of the FCC-ee tunnelin the arc regions, in view of the construction of a mock-up of thearc half-cell. One of the main and most challenging goals of thestudy, named FCC-ee Arc Half-Cell Mock-up Project, was toperform a preliminary investigation on the principles of supportingthe Short-Straight Sections and dipoles of the half-cells, both forthe booster and for the collider machines. [...]
2024 - 7 p.
- Published in : JINST 19 (2024) T02008
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Configuration management of the CERN accelerators complex on the road to long shutdown 3
/ Perrot, A L (CERN) ; Bartolomé-Jimenez, S (CERN) ; Birtwistle, T (CERN) ; Chemli, S (CERN) ; Feral, B (CERN) ; Garcia Gavela, H (CERN) ; Oliveira, J (CERN) ; Ronfaut, V (CERN)
The Configuration Management of the LHC and its injectors ensures a clear and coherent representation of the CERN accelerators at a given point in time. It has been evolving steadily. [...]
2023 - 3 p.
- Published in : JACoW IPAC 2023 (2023) MOPL028
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPL028
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FCC-ee arc half-cell: preliminary design & integration studies, with ideas for a mock-up
/ Carra, F (CERN) ; Baudin, L (CERN) ; Bauche, J (CERN) ; Artoos, K (CERN) ; Atieh, S (CERN) ; Bertarelli, A (CERN) ; Brunner, O (CERN) ; Capatina, O (CERN) ; Chance, A (Saclay) ; Chemli, S (CERN) et al.
During 2022, a dedicated study was undertaken at CERN, together with FCC Feasibility Study collaborators, aimed at proposing a robust configuration for the FCC-ee arc half cell. The proposed configuration takes into account integration aspects of the elements in the arc cross section, both for the booster and the collider, as well as aspects related to powering, cooling and ventilation, supporting and alignment, optics, instrumentation, handling and installation. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPL061
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPL061
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Processes and Tools to Manage CERN Programmed Stops Applied to the Second Long Shutdown of the Accelerator Complex
/ Vergara Fernandez, Estrella (CERN) ; Ansel, Antoine (CERN) ; Barberan Marin, Maria (CERN) ; Bernardini, Marzia (CERN) ; Chemli, Samy (CERN) ; Coupard, Julie (CERN) ; Foraz, Katy (CERN) ; Hay, David (CERN) ; Jimenez, José (CERN) ; Mcfarlane, David (CERN) et al.
The preparation and follow-up of CERN accelerator complex programmed stops require clear processes and methodologies. The LHC and its Injectors were stopped in December 2018, to maintain, consolidate and upgrade the different equipment of the accelerator chain. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 2048-2051
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2048-2051
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The Second Long Shutdown of the LHC and Its Injectors: Feedback from the Accelerator Coordination and Engineering Group
/ Perrot, Anne-Laure (CERN) ; Bernardini, Marzia (CERN) ; Chemli, Samy (CERN) ; Corso, Jean-Pierre (CERN) ; Coupard, Julie (CERN) ; Dos Santos Pedrosa, Fernando (CERN) ; Etheridge, John (CERN) ; Foraz, Katy (CERN) ; Grillot, Serge (CERN) ; Jimenez, José (CERN) et al.
The operation of the Large Hadron Collider (LHC) at CERN started in September 2008. Every 5 or 6 years, Long Shutdowns (LS) are programmed to execute time-intensive ordinary and extra-ordinary maintenance of the LHC and its injectors [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 2052-2055
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2052-2055
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Programmed Stops Coordination: from Preparation to Completion
/ Vergara Fernandez, Estrella (CERN) ; Bernardini, Marzia (CERN) ; Chemli, Samy (CERN) ; Corso, Jean-Pierre (CERN) ; Coupard, Julie (CERN) ; Etheridge, John Robert (CERN) ; Grillot, Serge (CERN) ; Muttoni, Yvon (CERN) ; Nicquevert, Bertrand (CERN) ; Perrot, Anne-Laure (CERN) et al.
The exploitation of the CERN accelerator complex requires programmed stops of the operation, to execute various activities as standard maintenances, upgrades, consolidations and projects implementations [...]
CERN-ACC-NOTE-2022-0036.
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2022. - 5 p.
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New Coordination Tools to Prepare the Programmed Stops in the LHC and its Injectors
/ Chemli, Samy (CERN) ; Bernardini, Marzia (CERN) ; Birtwistle, Thomas (CERN) ; Bolognesi, Andrea (CERN) ; Brito de Palma, Bernardo (CERN) ; Bustamante, Sebastien (CERN) ; Coupard, Julie (CERN) ; Foraz, Katy (CERN) ; Kleszcz, Emil (CERN) ; Kotsolakos, Nikitas (CERN) et al.
The LHC and its Injectors are submitted to an overall lifecycle of three to four years of physics delivery to Experiments with a two-year long stop, also known as Long Shutdown (LS). The years of physics delivery are ended by a programmed stop for the immediate preventive and corrective maintenance, also known as (Extended)-Year-End Technical Stop - (E)YETS. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-MOPMF044
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPMF044
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Collimation system post-LS1: status and commissioning
/ Salvachua, B (CERN) ; Valentino, G (CERN) ; Aberle, O (CERN) ; Albertone, J (CERN) ; Athanasiadis, S (CERN) ; Baglin, V (CERN) ; Bertarelli, A (CERN) ; Boccard, C (CERN) ; Bruce, R (CERN) ; Carra, F (CERN) et al.
The LHC collimation system has undergone an important upgrade during LS1. A
total of 32 collimator installations are taking place to consolidate and improve
the Run 1 system. [...]
Geneva : CERN, 2014 - 6 p.
- Published in : (2014) , pp. 111-116
Fulltext: PDF;
In : 5th Evian Workshop on LHC beam operation, Evian-les-Bains, France, 2 - 4 Jun 2014, pp.111-116
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