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Cryogenic architecture and heat loads for the High-Luminosity upgrade of the Large Hadron Collider (HL- LHC) at CERN
/ Gahier, Vanessa (CERN) ; Brodzinski, Krzysztof (CERN) ; Claudet, Serge (CERN) ; Delprat, Laurent (CERN) ; Lees, Andrew (CERN) ; Monneret, Emmanuel (CERN) ; Perin, Antonio (CERN) ; Sisti, Michele (CERN) ; Van Weelderen, Rob (CERN)
The High-Luminosity upgrade of the Large Hadron Collider (HL-LHC) at CERN is a major upgrade project of the LHC accelerator, which will allow increasing the peak luminosity by at least a factor of five beyond LHC’s design value. This upgrade will include the replacement of the final focusing superconducting magnets and the implementation of superconducting radiofrequency crab cavities in the long straight sections of the interaction points 1 and 5 of LHC. [...]
2025 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1327 (2025) , no. 1, pp. 012003
Fulltext: PDF;
In : 29th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2024, Geneva, Switzerland, 22 - 26 July 2024, pp.012003
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The Cryogenic Distribution System for the High Luminosity LHC upgrade at CERN
/ Sisti, M (CERN) ; Claudet, S (CERN) ; Metselaar, J (CERN) ; Lees, A (CERN) ; Merli, F (CERN) ; Perin, A (CERN) ; Gahier, V (CERN)
The High Luminosity upgrade of the Large Hadron Collider (HL-LHC) will require the replacement of the final focusing superconducting magnets, the implementation of new superconducting links to power the magnets and the implementation of new Superconducting Radio-Frequency (SRF) crab cavities, totalling a length of about 150 m on both sides of the collision points of the ATLAS (P1) and of the CMS (P5) experiments in the LHC accelerator. To cool the new and reconfigured cryogenic devices, a new Cryogenic Distribution System will replace the existing LHC cryogenic distribution line on each side of the experiments. [...]
2025 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1327 (2025) , no. 1, pp. 012114
Fulltext: PDF;
In : 29th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2024, Geneva, Switzerland, 22 - 26 July 2024, pp.012114
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Detailed study of the cryogenic jumper connections between the cryogenic distribution line and the superconducting magnets of the High Luminosity LHC upgrade at CERN
/ Merli, F (CERN) ; Claudet, S (CERN) ; Ramos, D (CERN) ; Lees, A (CERN) ; Perin, A (CERN) ; Prin, H (CERN) ; Sisti, M (CERN)
The High Luminosity upgrade of the Large Hadron Collider (HL-LHC) project will require a new cryogenic system to cool the new superconducting components in the final focusing regions for the ATLAS and the CMS experiments. New superconducting magnets operating in pressurized HeII at 1.9 K will replace the existing ones and each magnet will generate heat loads of several hundred watts. [...]
2025 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1327 (2025) , no. 1, pp. 012123
Fulltext: PDF;
In : 29th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2024, Geneva, Switzerland, 22 - 26 July 2024, pp.012123
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Chapter 14: Cryogenics for the HL-LHC
/ Claudet, S (CERN) ; Ferlin, G (CERN) ; Monneret, E (CERN) ; Perin, A (CERN) ; Sisti, M (CERN) ; Van Weelderen, R (CERN) ; Lees, A (CERN) ; Gahier, V (CERN) ; Brodzinski, K (CERN) ; Delprat, L (CERN)
The discovery of a Higgs boson at CERN in 2012 was the start of a major program working to measure this particle’s properties with the highest possible precision for testing the validity of the Standard Model and to search for further new physics at the energy frontier. The LHC is in a unique position to pursue this program. [...]
2024 - 14 p.
- Published in : Adv. Ser. Direct. High Energy Phys. 31 (2024) 341-354
Fulltext: PDF;
In : The High Luminosity Large Hadron Collider, pp.341-354
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Particle physics using reactor antineutrinos
/ CHANDLER Collaboration
Nuclear reactors are uniquely powerful, abundant, and flavor-pure sources of antineutrinos that continue to play a vital role in the US neutrino physics program. The US reactor antineutrino physics community is a diverse interest group encompassing many detection technologies and many particle physics topics, including Standard Model and short-baseline oscillations, BSM physics searches, and reactor flux and spectrum modeling. [...]
arXiv:2203.07214; FERMILAB-CONF-22-853-PPD-SCD.-
2024-06-26 - 50 p.
- Published in : J. Phys. G
Fulltext: c8e12e623ffdea56add50e6e3de8fdab - PDF; 2203.07214 - PDF; External links: Fermilab Library Server; eConf
In : 2021 Snowmass Summer Study, Seattle, WA, United States, 11 - 20 July 2021, pp.080501
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Model Independent Approach of the JUNO $^8$B Solar Neutrino Program
/ JUNO Collaboration
The physics potential of detecting $^8$B solar neutrinos is exploited at the Jiangmen Underground Neutrino Observatory (JUNO), in a model independent manner by using three distinct channels of the charged-current (CC), neutral-current (NC) and elastic scattering (ES) interactions. [...]
arXiv:2210.08437.
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24 p.
Fulltext
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Functional analysis and design of the cryogenic system for the HL-LHC IT String test bench at CERN
/ Rolando, G (CERN) ; Sisti, M (CERN) ; Duran Lucas, O (CERN) ; Wanninger, A (CERN) ; Mouleyre, J (CERN) ; Perin, A (CERN)
The High Luminosity LHC (HL-LHC) is a project aiming to upgrade the LHC collider to maintain scientific progress and exploit its full capacity. In the HL-LHC configuration, the Inner Triplet (IT) magnets of the present LHC will be replaced by a new set of higher performance magnets. [...]
2022 - 8 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng. 1240 (2022) 012093
Fulltext: PDF;
In : Cryogenic Engineering Conference and International Cryogenic Materials Conference, Online, 19 - 23 Jul 2021, pp.012093
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Beam induced heat load instrumentation installed in LHC during the Long Shutdown 2
/ Bradu, B (CERN) ; Brodzinski, K (CERN) ; Casas-Cubillos, J (CERN) ; Delikaris, D (CERN) ; Deschamps, J B (CERN) ; Le Naour, S (CERN) ; Pezzetti, M (CERN) ; Tavian, L (CERN) ; Tovar, A (CERN) ; Sisti, M (CERN) et al.
During the second run of the Large Hadron Collider (LHC) between 2015 and 2018, significant beam induced heat loads have been observed on the beam screens circuits impacting the cryogenic system capacity, mainly due to the electron clouds generated by the beams. To validate these measurements and to obtain precise heat load assessments and comparison with preliminary calculations based on existing hardware equipment at selected locations, it was decided to add new cryogenic instrumentation around the machine. [...]
2022 - 8 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng. 1240 (2022) 012043
Fulltext: PDF;
In : Cryogenic Engineering Conference and International Cryogenic Materials Conference, Online, 19 - 23 Jul 2021, pp.012043
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Search for Majorana neutrinos exploiting millikelvin cryogenics with CUORE
/ CUORE Collaboration
The possibility that neutrinos may be their own antiparticles, unique among the known fundamental particles, arises from the symmetric theory of fermions proposed by Ettore Majorana in 1937. Given the profound consequences of such Majorana neutrinos, among which is a potential explanation for the matter-antimatter asymmetry of the universe via leptogenesis, the Majorana nature of neutrinos commands intense experimental scrutiny globally; one of the primary experimental probes is neutrinoless double beta ($0 \nu \beta \beta$) decay. [...]
arXiv:2104.06906.-
2022-04-06 - 6 p.
- Published in : Nature
Fulltext: 2104.06906 - PDF; jhg - PDF; External links: Interactions.org; Nature News and Views article
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