CERN Accelerating science

HL-LHC Papers

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2022-06-04
06:06
A High Granularity Timing Detector for the ATLAS Detector Phase-II Upgrade / Imam, H (Hassan U., II, Ain Chock) /ATLAS HGTD Collaboration
To boost the performance of the Large Hadron Collider (LHC) and increase the potential of discoveries after 2027, the High-Luminosity LHC (HL-LHC) project has been announced, with the aim of increasing the luminosity by a factor of 10 above the design value of the LHC. This will lead to an increase of the pile-up interactions and will negatively impact the reconstruction of objects in the ATLAS detector, as well as its triggering performance. [...]
2022 - 10 p. - Published in : IEEE Trans. Nucl. Sci. 69 (2022) 677-686

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2022-06-02
06:29
Quench Behavior of Prototype Nb-Ti HL-LHC Dipole Canted Cos-Theta Orbit Corrector Magnets / Wozniak, Mariusz (CERN) ; Ravaioli, Emmanuele (CERN) ; Mangiarotti, Franco (CERN) ; Mentink, Matthias (CERN) ; Kirby, Glyn (CERN) ; Verweij, Arjan (CERN) ; Xu, Qingjin (CAS, Beijing) ; Wu, Wei (CAS, Beijing)
The HL-LHC project is an upgrade of the LHC that requires double aperture dipole correctors. In 2015, CERN selected Canted Cos-Theta (CCT) magnet, and the development of the MCBRD magnets followed. [...]
2022 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 32 (2022) 1-5 Fulltext: PDF;

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2022-06-02
06:29
Mechanical and thermal design of the target neutral beam absorber for the High-Luminosity LHC upgrade / Santos Díaz, P (Natl. U. Sci. Tech., Moscow) ; Sanchez Galan, F (CERN) ; De Maria, R (CERN) ; Kepes, E (Unlisted, CZ) ; Steinberg, P (Brookhaven Natl. Lab.) ; Longo, R (Illinois U., Urbana) ; Mazzoni, S (CERN) ; Cerutti, F (CERN) ; Sabate Gilarte, M (Seville U.) ; Infantino, A (CERN) et al.
The High-Luminosity target neutral beam absorber (TAXN) is the radiation absorber of the neutral particle debris generated at the beam collisions carried out in the ATLAS and CMS detectors at the Large Hadron Collider (LHC). The new absorber will protect the superconducting magnets from this radiation to prevent their quenching at a design luminosity of 7.5×1034  cm−2 s−1. [...]
2022 - 17 p. - Published in : Phys. Rev. Accel. Beams 25 (2022) 053001 Fulltext: PDF;

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2022-06-02
06:29
Luminosity and physics considerations on HL-LHC–and HE-LHC–based $\mu$p colliders / Kaya, Umit (Unlisted, TR) ; Ketenoglu, Bora (Ankara U.) ; Sultansoy, Saleh (TOBB ETU, Ankara) ; Zimmermann, Frank (CERN)
Construction of the future muon collider tangential to the Large Hadron Collider will give opportunity to realize μp collisions at multi-TeV center-of-mass energies. Using the nominal parameters of high-luminosity and high-energy upgrades of the LHC, as well as the design parameters of muon colliders, it is shown that L $_{μp}$ of the order of 10$^{33}$ cm$^{−2}$s$^{−1}$ is achievable for different options with from 4.58 TeV to 12.7 TeV. [...]
2022 - 5 p. - Published in : EPL 138 (2022) 24002

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2022-05-17
20:50
Optimization of the High Order Correctors for HL-LHC Toward the Series Production / Statera, Marco (INFN, Milan) ; Alessandria, Franco (INFN, Milan ; Milan U.) ; Bellomo, Giovanni (INFN, Milan ; Milan U.) ; Broggi, Francesco (INFN, Milan) ; Imeri, Luca (INFN, Milan) ; Leone, Augusto (INFN, Milan) ; Mariotto, Samuele (INFN, Milan ; Milan U.) ; Paccalini, Antonio (INFN, Milan) ; Pasini, Alessandro (INFN, Milan) ; Pedrini, Danilo (INFN, Milan) et al.
INFN is developing at the LASA lab (Milano, Italy) the High Order (HO) corrector magnets for the High Luminosity-LHC (HL-LHC) project, which will equip the interaction regions. Five prototypes, from skew quadrupole to dodecapole, have been designed and tested at LASA. [...]
2021 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 31 (2021) 1-5

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2022-04-08
06:07
The scientific potential and technological challenges of the High-Luminosity Large Hadron Collider program / Brüning, Oliver (CERN) ; Gray, Heather (LBNL, Berkeley) ; Klein, Katja (RWTH Aachen U.) ; Lamont, Mike (CERN) ; Narain, Meenakshi (Brown U.) ; Polifka, Richard (Prague, Tech. U.) ; Rossi, Lucio (INFN, Milan)
We present an overview of the High-Luminosity (HL-LHC) program at the Large Hadron Collider (LHC), its scientific potential and technological challenges for both the accelerator and detectors. The HL-LHC program is expected to start circa 2027 and aims to increase the integrated luminosity delivered by the LHC by an order of magnitude at the collision energy of 14 TeV. [...]
2022 - 46 p. - Published in : Rep. Prog. Phys. 85 (2022) 046201

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2022-04-07
06:02
Induction-Coil Measurement System for Normal- and Superconducting Solenoids / Petrone, Carlo (CERN) ; Sorti, Stefano (CERN) ; Dalane, Eivind (CERN) ; Mehl, Bertrand (CERN) ; Russenschuck, Stephan (CERN)
The magnetic measurement of solenoids relies on different methods to characterize the field quality and locate the magnetic axis. Usually, Hall mappers and stretched-wire systems are used for these tasks. [...]
2022 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 32 (2022) 9000605 Fulltext: PDF;

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2022-04-07
06:02
Assembly and Pre-Loading Specifications for the Series Production of the Nb$_3$Sn MQXFA Quadrupole Magnets for the HL-LHC / Ferracin, P (LBL, Berkeley) ; Ambrosio, G (Fermilab) ; Cheng, D W (LBL, Berkeley) ; Ferradas Troitino, J (CERN) ; Garcia Fajardo, L (LBL, Berkeley) ; Izquierdo Bermudez, S (CERN) ; Prestemon, S (LBL, Berkeley) ; Ray, K L (LBL, Berkeley) ; Solis, M J (LBL, Berkeley) ; Todesco, E (CERN) et al.
The High Luminosity LHC (HL-LHC) Project is planning to install 16 cold-masses made with Nb3Sn quadrupole magnets in the LHC Interaction Regions to significantly increase its luminosity. Half of these cold masses are fabricated at BNL, FNAL, and LBNL under the US Accelerator Research Program (AUP). [...]
2022 - 6 p. - Published in : IEEE Trans. Appl. Supercond. 32 (2022) 4000306

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2022-04-06
06:09
Design of the Fermilab Pre-Series Cold Mass for the HL-LHC Accelerator Upgrade Project / Bossert, R (Fermilab) ; Arnold, D (Fermilab) ; Feher, S (Fermilab) ; Martin, L (Fermilab) ; Narug, C (Fermilab) ; Nikolic, V (Fermilab) ; Orozco, C (Fermilab) ; Rabehl, R (Fermilab) ; Robotham, W (Fermilab) ; Strauss, T (Fermilab) et al.
As part of the U.S. contribution to the HL-LHC Accelerator Upgrade Project (AUP), Fermilab is designing and building cold masses suitable for use in the LHC interaction regions [...]
FERMILAB-PUB-22-092-TD; THU-PO3-112-02.- 2022 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 32 (2022) 4002204 Fulltext: PDF; External link: Fermilab Accepted Manuscript

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2022-04-06
06:09
Power Test of the First Two HL-LHC Insertion Quadrupole Magnets Built at CERN / Mangiarotti, F J (CERN) ; Willering, G (CERN) ; Fiscarelli, L (CERN) ; Bajko, M (CERN) ; Bottura, L (CERN) ; Desbiolles, V (CERN) ; Devred, A (CERN) ; Ferradas Troitino, J (CERN) ; Izquierdo Bermudez, S (CERN) ; Keijzer, R (CERN ; Twente U., Enschede) et al.
The High-Luminosity project (HL-LHC) of the CERN Large Hadron Collider (LHC), requires low β* quadrupole magnets in Nb$_3$Sn technology that will be installed on each side of the ATLAS and CMS experiments. After a successful shortmodel magnet manufacture and test campaign, the project has advanced with the production, assembly, and test of full-size 7.15- m-long magnets. [...]
2022 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 32 (2022) 1-5 Fulltext: PDF;

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