CERN Accelerating science

CERN Document Server 找到 64 笔记录  1 - 10下一个最後  跳到记录: 检索需时 0.59 秒. 
1.
Performance of thin-RPC detectors for high rate applications with eco-friendly gas mixtures / RPC ECOGas@GIF++ Collaboration
In the last few years, an intense R &D; activity on particle detectors for future HEP applications has been carried on with the aim of developing new techniques as well as studying the performance of already existing detectors when operated in a high rate environment. As for Resistive Plate Chamber detectors, the main challenges to face are the improvement of their detection capabilities and longevity at very high-rates, and the search for new eco-friendly gasmixtures free from greenhouse components. [...]
2024 - 11 p. - Published in : Eur. Phys. J. C 84 (2024) 605 Fulltext: PDF;
2.
Exploring Eco-Friendly Gas Mixtures for Resistive Plate Chambers: A Comprehensive Study on Performance and Aging / RPC ECOGas@GIF++ Collaboration
Resistive Plate Chambers (RPCs) are gaseous detectors widely used in high energy physics experiments, operating with a gas mixture primarily containing Tetrafluoroethane (C$_{2}$H$_{2}$F$_{4}$), commonly known as R-134a, which has a global warming potential (GWP) of 1430. To comply with European regulations and explore environmentally friendly alternatives, the RPC EcoGas@GIF++ collaboration, involving ALICE, ATLAS, CMS, LHCb/SHiP, and EP-DT communities, has undertaken intensive R&D; efforts to explore new gas mixtures for RPC technology. [...]
arXiv:2402.19395.- 2024-08-22 - 5 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1068 (2024) 169747 Fulltext: Publication - PDF; 2402.19395 - PDF;
In : 3rd International Conference on Detector Stability and Aging Phenomena in Gaseous Detectors, CERN, Geneva, Switzerland, 6 - 10 Nov 2023, pp.169747
3.
In-beam performance of a Resistive Plate Chamber operated with eco-friendly gas mixtures / ALICE Collaboration
ALICE (A Large Ion Collider Experiment) studies the Quark-Gluon Plasma (QGP): a deconfined state of matter obtained in ultra-relativistic heavy-ion collisions. One of the probes for QGP study are quarkonia and open heavy flavour, of which ALICE exploits the muonic decay. [...]
arXiv:2402.19408.- 2024-08-02 - 5 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1067 (2024) 169672 Fulltext: 2402.19408 - PDF; Publication - PDF;
In : PSD13: The 13th International Conference on Position Sensitive Detectors, Oxford, United Kingdom, 3 - 9 Sep 2023, pp.169672
4.
DRD1 Extended R&D Proposal / Colaleo, Anna (Universita e INFN, Bari (IT)) ; Ropelewski, Leszek (CERN) ; Abbrescia, Marcello (INFN Bari) ; Aielli, Giulio (INFN Tor Vergata) ; Baracchini, Elisabetta (GSSI) ; Bortfeldt, Jonathan (LMU) ; Borysova, Maryna (WIS) ; Breskin, Amos (WIS) ; Bregant, Marco (Instituto de Física da Universidade de São Paulo) ; Brunbauer, Florian Maximilian (CERN) et al.
This document realized in the framework of the newly established Gaseous Detector R&D Collaboration (DRD1), presents a comprehensive overview of the current state-of-the-art and the challenges related to various gaseous detector concepts and technologies. [...]
CERN-DRDC-2024-003 ; DRDC-P-DRD1.
- 2024.
DRD1 Extended R&D Proposal
5.
Preliminary results on the long-term operation of RPCs with eco-friendly gas mixtures under irradiation at the CERN Gamma Irradiation Facility / RPC ECOgas@GIF++ Collaboration
Since 2019 a collaboration between researchers from various institutes and experiments (i.e. ATLAS, CMS, ALICE, LHCb/SHiP and the CERN EP-DT group), has been operating several RPCs with diverse electronics, gas gap thicknesses and detector layouts at the CERN Gamma Irradiation Facility (GIF++). [...]
arXiv:2311.17574.- 2025-01-15 - 16 p. - Published in : Eur. Phys. J. Plus 140 (2025) 40 Fulltext: 2311.17574 - PDF; document - PDF;
6.
Measurements of binding energies and electromagnetic moments of silver isotopes – A complementary benchmark of density functional theory / de Groote, R P (Jyvaskyla U. ; Leuven U.) ; Nesterenko, D A (Jyvaskyla U.) ; Kankainen, A (Jyvaskyla U.) ; Bissell, M L (Manchester U.) ; Beliuskina, O (Jyvaskyla U.) ; Bonnard, J (York U., England ; IP2I, Lyon) ; Campbell, P (Manchester U.) ; Canete, L (Jyvaskyla U.) ; Cheal, B (Liverpool U.) ; Delafosse, C (Jyvaskyla U.) et al.
We report on a set of high-precision measurements of nuclear binding and excitation energies, as well as nuclear spins, magnetic dipole and electric quadrupole moments of neutron-rich silver isotopes, 113−123Ag. The measurements were performed using the JYFLTRAP mass spectrometer and the collinear laser spectroscopy beamline at the Ion Guide Isotope Separator On-Line (IGISOL) facility. [...]
2023 - 6 p. - Published in : Phys. Lett. B 848 (2024) 138352 Fulltext: PDF;
7.
High-rate tests on Resistive Plate Chambers operated with eco-friendly gas mixtures / RPC ECOGas@GIF++ Collaboration
Results obtained by the RPC ECOgas@GIF++ Collaboration, using Resistive Plate Chambers operated with new, eco-friendly gas mixtures, based on Tetrafluoropropene and carbon dioxide, are shown and discussed in this paper. Tests aimed to assess the performance of this kind of detectors in high-irradiation conditions, analogous to the ones foreseen for the coming years at the Large Hadron Collider experiments, were performed, and demonstrate a performance basically similar to the one obtained with the gas mixtures currently in use, based on Tetrafluoroethane, which is being progressively phased out for its possible contribution to the greenhouse effect. [...]
arXiv:2311.08259.- 2024-03-22 - 15 p. - Published in : Eur. Phys. J. C 84 (2024) 300 Fulltext: 2311.08259 - PDF; document - PDF;
8.
Gauge $SU(2)_f$ flavour transfers / Darmé, Luc (IP2I, Lyon) ; Deandrea, Aldo (IP2I, Lyon ; Johannesburg U.) ; Mahmoudi, Farvah (IP2I, Lyon ; CERN)
We introduce the idea of flavour transfer from a non-abelian horizontal $SU(2)_f$ flavour gauge group embedded in the Standard Model flavour structure. The new flavour vector bosons, in the mass range from the tens of GeV to multi-TeV do not induce large flavour-changing currents and meson oscillations, which usually provide the dominant constraints on this type of structure. [...]
arXiv:2307.09595; CERN-TH-2023-139.- 2024-05-28 - 50 p. - Published in : JHEP 2405 (2024) 313 Fulltext: 2307.09595 - PDF; document - PDF;
9.
Measurement of Non-prompt $\rm D^0$-meson Elliptic Flow in Pb-Pb Collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeVMeasurement of non-prompt ${{\textrm{D}}^{0}}$-meson elliptic flow in Pb–Pb collisions at $\sqrt{s_{\textrm{NN}}} = 5.02$ TeV / ALICE Collaboration
The elliptic flow ($v_2$) of $\rm D^0$ mesons from beauty-hadron decays (non-prompt $\rm D^0$) was measured in midcentral (30-50%) Pb-Pb collisions at a centre-of-mass energy per nucleon pair $\sqrt{s_{\rm NN}}$ = 5.02 TeV with the ALICE detector at the LHC. The $\rm D^0$ mesons were reconstructed at midrapidity ($|y|<0.8$) from their hadronic decay $\mathrm{D^0 \to K^-\pi^+}$, in the transverse momentum interval $2 < p_{\rm T} < 12$ GeV/$c$. [...]
arXiv:2307.14084; CERN-EP-2023-148.- Geneva : CERN, 2023-12-11 - 17 p. - Published in : Eur. Phys. J. C 83 (2023) 1123 Draft (restricted): PDF; Fulltext: 2307.14084 - PDF; document - PDF; Physics Preliminary Summary : PDF;
10.
Higher-order correlations between different moments of two flow amplitudes in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV / ALICE Collaboration
The correlations between different moments of two flow amplitudes, extracted with the recently developed asymmetric cumulants, are measured in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV recorded by the ALICE detector at the LHC. The magnitudes of the measured observables show a dependence on the different moments as well as on the collision centrality, indicating the presence of non-linear response in all even moments up to the eighth. [...]
arXiv:2303.13414; CERN-EP-2023-047.- Geneva : CERN, 2023-11-14 - 21 p. - Published in : Phys. Rev. C 108 (2023) 055203 Draft (restricted): PDF; Fulltext: 2303.13414 - PDF; Publication - PDF;

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