CERN Accelerating science

HL-LHC Conference Papers

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Prospects of non-resonant Higgs pair production at the HL-LHC and HE-LHC / Adhikary, Amit (Bangalore, Indian Inst. Sci.) ; Banerjee, Shankha (Durham U., IPPP) ; Barman, Rahool Kumar (IACS, Kolkata) ; Bhattacherjee, Biplob (Bangalore, Indian Inst. Sci.) ; Niyogi, Saurabh (Gokhale Coll., Calcutta)
The prospects of observing the di-Higgs production in the Standard Model (SM) is explored. We choose final states based on considerable production rate and cleanliness. [...]
2020 - 8 p. - Published in : J. Phys. : Conf. Ser. 1690 (2020) 012149
In : 5th International Conference on Particle Physics and Astrophysics (ICPPA), pp.012149

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Power Supply System with Integrated Energy Storage for Superconducting Magnets / Papamichali, Maria (EPFL, Switzerland) ; Coulinge, Emilien (EPFL, Switzerland) ; Freijedo, Francisco D. (EPFL, Switzerland) ; Dujic, Dražen (EPFL, Switzerland)
To achieve higher collision rate of particle beams, CERN Large Hadron Collider requires new superconducting magnets and associated power supplies at the interaction points for its High-Luminosity upgrade. A new family of two-quadrant converters with integrated energy storage is studied in order to increase the system availability and energy efficiency. [...]
2018 - Published in : (2018) , pp. 8403072
In : International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM Europe 2018), Nuremberg, Germany, 5 - 7 Jun 2018, pp.8403072

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Irradiation aging of the CMS Drift Tube muon detector / Ferrero, D.D. Redondo ; Abbiendi, G. ; Maestre, J. Alcaraz ; Fernández, A. Álvarez ; González, B. Álvarez ; Amapane, N. ; Bachiller, I. ; Barcala, J.M. ; Barcellan, L. ; Battilana, C. et al.
During the High Luminosity LHC, the Drift Tube chambers installed in the CMS detector need to operate with an integrated dose ten times higher than expected at the LHC due to the increase in integrated luminosity from 300 fb${-1}$ to 3000 fb$^{-1}$. Irradiations have been performed to assess the performance of the detector under such conditions and to characterize the radiation aging of the detector. [...]
2020 - 6 p. - Published in : Radiat. Phys. Chem. 172 (2020) 108747
In : 3rd International Conference on Dosimetry and its Applications, Lisbon, Portugal, 27 - 31 May 2019, pp.108747

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CMS ECAL upgrade for precision timing and energy measurements at the High-Luminosity LHC / Salvatico, R (Turin U. ; INFN, Turin) /CMS Collaboration
The High Luminosity upgrade of the LHC (HL-LHC) at CERN will provide unprecedented instantaneous and integrated luminosities of around $5\times10^{34} ~\mathrm{cm}^{-2}\mathrm{s}^{-1}$ and $3000 ~\mathrm{fb}^{-1}$, respectively, from 2025 to 2035. During this operational period, an average of 140 to 200 collisions per bunch-crossing (pile up) is expected, posing a challenge to the event reconstruction. [...]
CMS-CR-2020-053.- Geneva : IOP, 2020 - 7 p. - Published in : JINST 15 (2020) C05040 Fulltext: PDF;
In : 3rd Conference on Calorimetry for the High Energy Frontier, Fukuoka, Japan, 25 - 29 Nov 2019, pp.C05040

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Reconstruction in an imaging calorimeter for HL-LHC / Di Pilato, Antonio (Bari U. ; INFN, Bari) ; Chen, Ziheng (Northwestern U.) ; Pantaleo, Felice (CERN) ; Rovere, Marco (CERN) /CMS Collaboration
The CMS endcap calorimeter upgrade for the High Luminosity LHC in 2027 uses silicon sensors to achieve radiation tolerance, with the further benefit of a very high readout granularity. Small scintillator tiles with individual SiPM readout are used in regions permitted by the radiation levels. [...]
arXiv:2004.10027; CMS-CR-2020-058.- Geneva : CERN, 2020-06-08 - 8 p. - Published in : JINST 15 (2020) C06023 Fulltext: CR2020_058 - PDF; 2004.10027 - PDF;
In : 3rd Conference on Calorimetry for the High Energy Frontier, Fukuoka, Japan, 25 - 29 Nov 2019, pp.C06023

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Improved RPC for CMS muon system upgrade for HL-LHC / CMS Collaboration
During the Phase-2 of the LHC, known as the High Luminosity LHC (HL-LHC), the accelerator will increase its instantaneous luminosity to 5 $\times$ 10$^{34}$ cm$^{-2}$ s$^{-1}$, delivering an integrated luminosity of 3000~fb$^{-1}$ over 10 years of operation starting from 2027. In view of the HL-LHC, the CMS muon system will be upgraded to sustain efficient muon triggering and reconstruction performance. [...]
arXiv:2005.11396; CMS-CR-2020-096.- Geneva : CERN, 2020-11-16 - 11 p. - Published in : JINST 15 (2020) C11012 Fulltext: CR2020_096 - PDF; 2005.11396 - PDF;
In : XV Workshop on Resistive Plate Chambers and related detectors, Roma, Italy, 10 - 14 Feb 2020, pp.C11012

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Precision luminosity measurement with the CMS detector at HL-LHC / Pásztor, Gabriella (Eotvos U., Dept. Atomic Phys.) /CMS Collaboration
The High Luminosity upgrade of the LHC (HL-LHC) is foreseen to increase the instantaneous luminosity by a factor of five to seven times the LHC nominal design value. The resulting, unprecedented requirements for background monitoring and luminosity measurement create the need for new high-precision instrumentation at CMS, using radiation-hard detector technologies. [...]
CMS-CR-2020-156.- Geneva : SISSA, 2021 - 6 p. - Published in : PoS ICHEP2020 (2021) 864 Fulltext: PDF; Fulltext from publisher: PDF;
In : 40th International Conference on High Energy Physics (ICHEP), Prague, Czech Republic, 28 Jul - 6 Aug 2020, pp.864

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ME0 project for the Triple-GEM upgrade of the CMS muon spectrometer: Design, preliminary performance and R&D; perspective / Fiorina, D (INFN, Pavia ; Pavia U.) /CMS Collaboration
In the framework of the HL-LHC project, the upgrade of the CMS Muon System envisages the installation of three new muon stations based on the GEM technology, named as GE1/1, GE2/1 and ME0. The CMS GEM Group has developed a novel construction design of GE1/1 triple-GEM detectors; in particular, a new self-stretching technique has been introduced to mechanically stretch the GEM foils without using spacer grids or glue inside the gas volume. [...]
2021 - 4 p. - Published in : Nuovo Cimento C 44 (2021) 45 Fulltext: PDF;
In : 106th Congresso Nazionale della Societa Italiana di Fisica, Online, 14 - 18 Sep 2020, pp.45

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Precision Timing with the CMS MTD Barrel Timing Layer for HL-LHC / Tramontano, R (Rome U. ; INFN, Rome ; CERN) /CMS Collaboration
The Compact Muon Solenoid (CMS) detector at the CERN Large Hadron Collider (LHC) is undergoing an extensive Phase-2 upgrade program to prepare for the challenging conditions of the High-Luminosity LHC (HL-LHC). A new timing detector in CMS will measure minimum ionizing particles (MIPs) with a time resolution of 30–40 ps. [...]
2021 - 4 p. - Published in : Nuovo Cimento C 44 (2021) 80 Fulltext: PDF;
In : 106th Congresso Nazionale della Societa Italiana di Fisica, Online, 14 - 18 Sep 2020, pp.80

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3D pixel modules characterization with RD53A readout for ATLAS ITk Upgrade / Vannoli, L (INFN, Genoa) /ATLAS Collaboration
The High-Luminosity LHC (HL-LHC) with its large number of collisions per bunch crossing will present a very challenging environment to the particle detectors. To cope with these conditions, the current inner detector of the ATLAS experiment will be replaced with a new all-silicon Inner Tracker (ITk) during the Phase-II upgrade. [...]
2021 - 4 p. - Published in : Nuovo Cimento C 44 (2021) 82 Fulltext: PDF;
In : 106th Congresso Nazionale della Societa Italiana di Fisica, Online, 14 - 18 Sep 2020, pp.82

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