CERN Accelerating science

CERN Document Server 775 ჩანაწერია ნაპოვნი  1 - 10შემდეგიდასასრული  ჩანაწერთან გადასვლა: ძიებას დასჭირდა 0.70 წამი. 
1.
Study of selected mild steels for application in vacuum systems of future gravitational wave detectors / Scarcia, Carlo (CERN ; RWTH Aachen U.) ; Bregliozzi, Giuseppe (CERN) ; Chiggiato, Paolo (CERN) ; Michet, Alice Ingrid (CERN) ; Perez Fontenla, Ana Teresa (CERN) ; Rimoldi, Martino (CERN) ; Taborelli, Mauro (CERN) ; Wevers, Ivo (CERN)
Next-generation gravitational wave detectors (GWDs) like the Cosmic Explorer and Einstein Telescope require extensive vacuum tubing, necessitating cost-effective materials. This study explores the viability of mild steel as an alternative to austenitic stainless steel for UHV beampipes, focusing on outgassing rates and surface chemistry after low-temperature bakeouts. [...]
arXiv:2406.07123.- 2024-09-01 - 17 p. - Published in : J. Vac. Sci. Technol. B Microelectron. Nanometer Struct.: 42 (2024) , no. 5, pp. 054202 Fulltext: 2406.07123 - PDF; document - PDF;
2.
CMS Upgrades for the High-Luminosity LHC Era / Fernandez Perez Tomei, Thiago Rafael (SAO_PAULO) /CMS Collaboration
The High-Luminosity LHC (HL-LHC) era, set to begin in 2029, will provide the general-purpose experiments with an instantaneous luminosity of up to $\mathcal{L} = 7.5\times10^{34}$\,cm$^{-2}$\,s$^{-1}$ from pp collisions at a centre-of-mass energy of 14 TeV. To fully exploit this unprecedented data set, the experimental setups must be upgraded to withstand the challenging conditions of the HL-LHC, including up to 200 simultaneous collisions per bunch crossing and a substantial radiation dose delivered to the detectors. [...]
CMS-CR-2024-122.- Geneva : CERN, 2024 - 9 p. Fulltext: PDF;
In : 12th Edition of the Large Hadron Collider Physics Conference, Boston, Us, 3 - 7 Jun 2024
3.
Overview of beam intensity issues and mitigations in the CERN-SPS fast wire scanners / Veness, Raymond (CERN) ; Guerrero, Ana (CERN) ; Perez Fontenla, Ana Teresa (CERN) ; Harrison, Anthony (CERN) ; Salvant, Benoit (CERN) ; Zannini, Carlo (CERN) ; Antuono, Chiara (CERN) ; Vollinger, Christine (CERN) ; de la Fuente, Elena (CERN) ; Carra, Federico (CERN) et al.
A new design of fast wire scanner was installed in the CERN injector complex as part of the upgrades linked to the High-Luminosity LHC Project. Initial operations with these beams were good, but during the planned intensity ramp-up one early 2023, all four SPS scanners failed at the same time. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) WEPG26 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPG26
4.
ATLAS Exotic Heavy Resonance Searches / De La Torre Perez, Hector (Northern Illinois University (US)) /ATLAS Collaboration
'Many new physics models predict the existence of new, heavy particles. This talk summarizes recent ATLAS searches for Beyond-the-Standard-Model heavy resonances which decay to quarks, or leptons, using Run 2 data collected at the LHC
ATL-PHYS-SLIDE-2024-284.- Geneva : CERN, 2024 - 21 p. Fulltext: PDF; External link: Original Communication (restricted to ATLAS)
In : 42nd International Conference on High Energy Physics, Prague, Cz, 18 - 24 Jul 2024
5.
Irradiation effects on GEM detectors operated at RUN1 and RUN2 at the LHCb experiment / Poli Lener, M (Frascati) ; Alfonsi, M (Mainz U., Inst. Phys.) ; Bencivenni, G (Frascati) ; Brundu, D (INFN, Cagliari) ; Cardini, A (INFN, Cagliari) ; De Simone, P (Frascati) ; Giovannetti, M (Frascati) ; Murtas, F (Frascati) ; Morello, G (Frascati) ; Pinci, D (U. Rome La Sapienza (main)) et al.
Triple-GEM detectors with pad readout have been employed to equip the innermost region (R1) of the first station (M1) within the Muon system of the LHCb experiment. The GEM detectors have been operated with an Ar/CO2/CF4 = 45/15/40 gas mixture at a gas gain of about 4000 with an average particle flux of about 250 kHz/cm2. [...]
2024 - Published in : Nucl. Instrum. Methods Phys. Res., A 1066 (2024) 169579
In : 3rd International Conference on Detector Stability and Aging Phenomena in Gaseous Detectors, CERN, Geneva, Switzerland, 6 - 10 Nov 2023, pp.169579
6.
Measurement of the $B^0_\mathrm{s}\to J/\psi K^0_\mathrm{S}$ effective lifetime from proton-proton collisions at $\sqrt{s} = 13$ TeV / CMS Collaboration
The effective lifetime of the $ \mathrm{B}_{s}^{0} $ meson in the decay $ \mathrm{B}_{s}^{0} \to \mathrm{J}/\psi\mathrm{K^0_S} $ is measured using data collected during 2016-2018 with the CMS detector in $ \sqrt{s}= $ 13 TeV proton-proton collisions at the LHC, corresponding to an integrated luminosity of 140 fb$ ^{-1} $. The effective lifetime is determined by performing a two-dimensional unbinned maximum likelihood fit to the $ \mathrm{B}_{s}^{0} $ meson invariant mass and proper decay time distributions. [...]
arXiv:2407.13441; CMS-BPH-22-001; CERN-EP-2024-172; CMS-BPH-22-001-003.- Geneva : CERN, 2024-10-31 - 37 p. - Published in : JHEP 2410 (2024) 247 Fulltext: 2407.13441 - PDF; 0c4812e5f66e5d86c2eea85f3fce34f9 - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
7.
Measurement of boosted Higgs bosons produced via vector boson fusion or gluon fusion in the $ \mathrm{H}\to\mathrm{b}\overline{\mathrm{b}} $ decay mode using LHC proton-proton collision data at $ \sqrt{s} = $ 13 TeV / CMS Collaboration
A measurement is performed of Higgs bosons produced with high transverse momentum ($ p_{\mathrm{T}} $) via vector boson or gluon fusion in proton-proton collisions. The result is based on a data set with a center-of-mass energy of 13 TeV collected in 2016-2018 with the CMS detector at the LHC and corresponds to an integrated luminosity of 138 fb$ ^{-1} $. [...]
arXiv:2407.08012; CMS-HIG-21-020; CERN-EP-2024-162; CMS-HIG-21-020-003.- Geneva : CERN, 2024-12-04 - 47 p. - Published in : JHEP 2412 (2024) 035 Fulltext: CMS-HIG-21-020-arXiv - PDF; 2407.08012 - PDF; 1ea1f962610d94c17626a54d23564b29 - PDF; document - PDF; External link: Fermilab Library Server
8.
Observation of double $ \mathrm{J}/\psi $ meson production in pPb collisions at $ \sqrt{\smash[b]{s_{_{\mathrm{NN}}}}} $ = 8.16 TeV / CMS Collaboration
The first observation of the concurrent production of two $ \mathrm{J}/\psi $ mesons in proton-nucleus collisions is presented. The analysis is based on a proton-lead (pPb) data sample recorded at a nucleon-nucleon center-of-mass energy of 8.16 TeV by the CMS experiment at the CERN LHC and corresponding to an integrated luminosity of 174.6 nb$^{-1}$. [...]
arXiv:2407.03223; CMS-HIN-23-013; CERN-EP-2024-167; CMS-HIN-23-013-003.- Geneva : CERN, 2024-11-01 - 41 p. - Published in : Phys. Rev. D 110 (2024) 092002 Fulltext: 2407.03223 - PDF; 5780860133a2c27f57387f5e7d51e476 - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
9.
Development and characterisation of advanced coatings for high energy physics applications / Perez Fontenla, Ana Teresa (CERN) ; Pereira Carlos, Carlota (CERN) ; Leith, Stewart (CERN) ; Moros, Alice (CERN) ; Pfeiffer, Stephan (CERN) ; Rodriguez-Castro, Enrique (CERN) ; Rosaz, Guillaume (CERN)
The Future Circular Collider (FCC) study develops the technologies for next generation high performance particle colliders and accelerating structures. It places high requirements on the performance of Superconducting Radio Frequency (SRF) cavities used to accelerate the particle beam. [...]
2023 - 4 p. - Published in : JACoW IPAC 2023 (2023) WEPA150 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.WEPA150
10.
Recent BSM Highlights from ATLAS and CMS: Vector-like-Quarks/Leptoquarks/New vector bosons / De La Torre Perez, Hector (Northern Illinois University (US)) /ATLAS Collaboration
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ATL-PHYS-SLIDE-2024-108.- Geneva : CERN, 2024 - 21 p. Fulltext: PDF; External link: Original Communication (restricted to ATLAS)

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