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CERN Document Server 56 record trovati  1 - 10successivofine  salta al record: La ricerca ha impiegato 1.24 secondi. 
1.
A prototype with Xenon to simulate the future advance refrigeration unit for cooling of silicon detector trackers / Contiero, Luca (Norwegian University of Science and Technology (NTNU) (NO)) ; Hafner, Armin (Norwegian University of Science and Technology (NTNU) (NO)) ; Banasiak, Krzysztof (Norwegian University of Science and Technology (NTNU) (NO)) ; Verlaat, Bart (CERN) ; Petagna, Paolo (CERN) ; Allouche, Yosr (Norwegian University of Science and Technology (NTNU) (NO))
The Large Hadron Collider (LHC) will soon undergo the Phase III Upgrade, resulting in radiation levels never achieved before. Therefore, both the detector cooling system and mechanical supports for future particle trackers should also be upgraded, as the current refrigeration technology using CO₂ is insufficient to prevent the thermal runaway of silicon sensors due to the CO₂ triple point temperature (≈ -56°C). [...]
AIDAinnova-CONF-2024-001.- Geneva : CERN, 2023 - Published in : Link to conference Fulltext: PDF;
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2.
Production of $^{{129} \textrm{m}}$Xe and $^{{131} \textrm{m}}$Xe via neutron activation of $^{128}$Xe and $^{130}$Xe at ILL-RHF and NCBJ-MARIA high-flux reactors / Chojnacki, M (CERN ; Geneva U.) ; Kulesz, K (CERN ; Geneva U.) ; Michelon, I (CERN ; INFN, Padua) ; Azaryan, N (CERN ; Mickiewicz U., Poznan) ; Barbero, E (CERN) ; Crepieux, B (CERN) ; Lica, R (CERN ; Bucharest, IFIN-HH) ; Murawski, Ł (NCBJ, Swierk) ; Ziemba, M (NCBJ, Swierk) ; Piersa-Siłkowska, M (CERN) et al.
The long-lived xenon isomers $^{{129} \textrm{m}}$Xe and $^{{131} \textrm{m}}$Xe are of interest for the GAMMA-MRI project, which aims at developing a novel imaging modality based on magnetic resonance of polarized unstable tracers. Here, we present the steps leading to and following the production of these two isomers via neutron irradiation of highly-enriched  $^{128}$Xe and $^{130}$Xe gas samples at two high-flux reactors, the High-Flux Reactor (Réacteur à haut flux, RHF) at the Institut Laue-Langevin (ILL) and the MARIA reactor at the National Centre for Nuclear Research (NCBJ). [...]
2024 - 8 p. - Published in : Appl. Radiat. Isot. 205 (2024) 111174 Fulltext: PDF;
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3.
Measurements of longitudinal flow decorrelations in pp and Xe+Xe collisions with the ATLAS detector / ATLAS Collaboration
Measurements of longitudinal flow decorrelations in 13 TeV $pp$ and 5.44 TeV Xe+Xe collisions with the ATLAS detector are presented. [...]
arXiv:2308.16745 ; CERN-EP-2023-184. - 2023 - 31.
Fulltext - Previous draft version - Fulltext
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4.
Correlations between flow and transverse momentum in <math><mrow><mi>Xe</mi><mo>+</mo><mi>Xe</mi></mrow></math> and <math><mrow><mi>Pb</mi><mo>+</mo><mi>Pb</mi></mrow></math> collisions at the LHC with the ATLAS detector: A probe of the heavy-ion initial state and nuclear deformation / ATLAS Collaboration
The correlations between flow harmonics $v_n$ for $n=2$, 3 and 4 and mean transverse momentum $[p_\mathrm{T}]$ in $^{129}$Xe+$^{129}$Xe and $^{208}$Pb+$^{208}$Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.44$ TeV and 5.02 TeV, respectively, are measured using charged particles with the ATLAS detector. The correlations are sensitive to the shape and size of the initial geometry, nuclear deformation, and initial momentum anisotropy. [...]
arXiv:2205.00039; CERN-EP-2022-052.- Geneva : CERN, 2023-05-15 - 28 p. - Published in : Phys. Rev. C 107 (2023) 054910 Fulltext: ANA-HION-2021-01-PAPER - PDF; 2205.00039 - PDF; Publication - PDF; External link: Previous draft version
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5.
Isotope Shift of Nuclear Magnetic Resonances in 129Xe and 131Xe Caused by Spin-Exchange Pumping by Alkali Metal Atoms / Petrov, Vladimir I (Unlisted, RU) ; Pazgalev, Anatoly S (Ioffe Phys. Tech. Inst.) ; Vershovskii, Anton K (Ioffe Phys. Tech. Inst.)
The effect of isotope shifts of nuclear magnetic resonance (NMR) frequency in xenon isotopes $^{129}$Xe and $^{131}$Xe polarized by optically-oriented alkali metal atoms is not only of fundamental interest, but also of practical significance, since it is the main factor limiting the accuracy of a whole class of prospective navigation and metrological devices. Our study of the parametric dependences of the isotope shift has shown that this effect is largely due to incomplete averaging of an inhomogeneous local magnetic field by two xenon isotopes, and therefore, its value can be influenced by applying an external magnetic field gradient. [...]
2019 - 7 p. - Published in : IEEE Sensors J. 20 (2019) 760-766
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6.
Applications and Perspectives of Ultrasonic Multi-Gas Analysis with Simultaneous Flowmetry / Hallewell, Gregory (Marseille, CPPM) ; Dingley, John (Swansea U.) ; Doubek, Martin (CERN) ; Feuillassier, Robin (Aix-Marseille U.) ; Katunin, Sergey (St. Petersburg, INP) ; Nagai, Koichi (Oxford U.) ; Robinson, David (Cambridge U.) ; Rozanov, Alexandre (Marseille, CPPM) ; Williams, David (Swansea U.) ; Vacek, Vaclav (Prague, Tech. U., Mech. Eng.)
We have developed ultrasonic instrumentation for simultaneous flow and composition measurement in a variety of gas mixtures. Flow and composition are respectively derived from measurements of the difference and average of sound transit times in opposite directions in a flowing process gas. [...]
2021 - 17 p. - Published in : Instruments 5 (2021) 6 Fulltext: PDF;
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7.
SEE Tests With Ultra Energetic Xe Ion Beam in the CHARM Facility at CERN / Fernández-Martínez, Pablo (CERN) ; García Alía, Rubén (CERN) ; Cecchetto, Matteo (CERN) ; Kastriotou, Maria (CERN) ; Kerboub, Nourdine (CERN) ; Tali, Maris (CERN) ; Wyrwoll, Vanessa (CERN) ; Brugger, Markus (CERN) ; Cangialosi, Chiara (CERN) ; Cerutti, Francesco (CERN) et al.
Taking advantage of the heavy ion acceleration program, tests on radiation effects with Ultrahigh Energy (UHE) xenon ion beams (with Energy > 5 GeV/nucleon) have been performed in several experimental areas of the CERN accelerator complex. Specifically, the outcomes of the first UHE heavy ion test campaign carried out at the CHARM facility are presented and discussed in this contribution. [...]
2019 - 9 p. - Published in : IEEE Trans. Nucl. Sci. 66 (2019) 1523-1531
In : Conference on Radiation and its Effects on Components and Systems, Gothenburg, Sweden, 16 - 21 Sep 2018, pp.1523-1531
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8.
PhD thesis on production and purification of metastable xenon for the gamma-MRI project at CERN. / Marinho Valavicius, Priscilla (CERN)
PhD thesis on production and purification of metastable xenon for the gamma-MRI project at CERN [...]
CERN-HR-Note-2021-027. - 2021.
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9.
Characterizing High-Energy Ion Beams With PIPS Detectors / Bagatin, M (Padua U.) ; Ferlet-Cavrois, V (ESTEC, Noordwijk) ; Gerardin, S (Padua U.) ; Muschitiello, M (ESTEC, Noordwijk) ; Paccagnella, A (Padua U.) ; Costantino, A (ESTEC, Noordwijk) ; Santin, G (ESTEC, Noordwijk) ; Polo, C Boatella (ESTEC, Noordwijk) ; Garcia Alía, R (CERN) ; Fernandez Martinez, P (CERN) et al.
The energy deposited by heavy-ion beams was measured using a passivated implanted planar silicon (PIPS) detector in different facilities. Ion beams at ultrahigh energy lead to the formation of a second, unexpected peak in the deposited energy spectrum at slightly higher energy, in addition to the expected primary peak. [...]
2019 Dec 10 : , 2019 - 7 p. - Published in : IEEE Trans. Nucl. Sci. 67 (2019) 1421-1427
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10.
Measurements of Anisotropic Flow in Xe–Xe Collisions at $\sqrt {s_{NN}} =$ 5.44 TeV Using the ALICE Detector / Adolfsson, Jonatan (Lund U.) /ALICE Collaboration
These proceedings summarise the first measurements of anisotropic flow coefficients v n , 2 ≤ n ≤ 4 , for inclusive charged particles at mid-rapidity in Xe–Xe collisions at s NN = 5 . 44 TeV . [...]
2019 - 5 p. - Published in : MDPI Proc. 10 (2019) 41 Fulltext: PDF;
In : Hot Quarks 2018 : Workshop for Young Scientists on the Physics of Ultrarelativistic Nucleus-Nucleus Collisions, De Krim, Texel Island, Netherlands, 7 - 14 Sep 2018, pp.41
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