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Real-Time SER Measurements of CMOS Bulk 40- and 65-nm SRAMs Combined With Neutron Spectrometry at the JET Tokamak During Its Final D-T Plasma Operation / Dentan, Martin (CEA Cadarache ; CERN) ; Moindjie, Soilihi (CNRS, France) ; Cecchetto, Matteo (CERN) ; Autran, Jean-Luc (CNRS, France) ; Alia, Rubén Garcia (CERN) ; Naish, Richard (Culham Lab) ; Waterhouse, John (Culham Lab) ; Horton, Alan R (Culham Lab) ; Litaudon, Xavier (CEA Cadarache) ; Munteanu, Daniela (CNRS, France) et al.
We performed soft error rate (SER) characterization of 40- and 65-nm bulk CMOS static random access memories (SRAMs) combined with neutron spectrometry in the deuterium-tritium (D-T)-fueled Joint European Torus (JET) tokamak during its final D-T plasma operation (September and October 2023) producing a series of several dozens of power pulses. Our experimental results demonstrate the impact of machine operation on the electronics’ reliability, emulating realistic conditions for circuits exposed to the partially radiation-shielded environment of future fusion reactors. [...]
2025 - 10 p. - Published in : IEEE Trans. Nucl. Sci. 72 (2025) 1486-1495

Detaljnije

Optical diagnostic studies to analyse electron cyclotron resonance plasma produced in the GTS-LHC Ion Source / Bhaskar, Bichu ; Kuchler, Detlef (CERN) ; Koevener, Toke Kay Thomas
The GTS-LHC electron cyclotron resonance (ECR) ion source is an integral part of the chain of accelerators at CERN. It produces the heavy ion beams which are accel- erated using a series of accelerators from LINAC up to the LHC. [...]
CERN-ACC-2024-0007.- Geneva : CERN, 2024 - 4 p.
In : 26rd International Workshop on ECR Ion Sources (ECRIS2024), Darmstadt, Germany, 15 - 19 Sep 2024, pp.15-19

Detaljnije

Amplitude analysis of $B^0 \rightarrow \eta_c(1S) K^+ \pi^- $ decays / LHCb Collaboration
An amplitude analysis of the $B^0 \rightarrow \eta_c(1S) K^+ \pi^-$ decays with $\eta_c(1S)\rightarrow p\bar{p} $ is performed using a sample corresponding to an integrated luminosity of 9$\text{fb}^{-1}$ of $pp$ collision data collected by the LHCb detector at centre-of-mass energies of $\sqrt{s}=$7, 8 and 13TeV. [...]
arXiv:2509.03133 ; LHCb-PAPER-2025-027 ; CERN-EP-2025-185 ; LHCB-PAPER-2025-027. - 2025 - 32.
Fulltext - Related data file(s) - Fulltext

Detaljnije

First exclusive reconstruction of the $ \mathrm{B}^{*+} $, $ \mathrm{B}^{*0} $, and $ \mathrm{B}_{s}^{*0} $ mesons and precise measurement of their masses / CMS Collaboration
Using proton-proton collision data collected by the CMS experiment at $ \sqrt{s}= $ 13 TeV in 2016-2018, corresponding to an integrated luminosity of 140 fb$^{-1}$, the first full reconstruction of the three vector $ {\mathrm{B}} $ meson states, $ \mathrm{B}^{*+} $, $ \mathrm{B}^{*0} $, and $ \mathrm{B}_{s}^{*0} $, is performed. [...]
arXiv:2508.05820 ; CMS-BPH-24-011 ; CERN-EP-2025-162 ; CMS-BPH-24-011-003. - 2025 - 35.
Additional information for the analysis - CMS AuthorList - Fulltext - Fulltext

Detaljnije

Amplitude analysis of the $\Xi^+_c\to pK^-\pi^+$ decay and $\Xi^+_c$ baryon polarization measurement in semileptonic beauty-hadron decays / LHCb Collaboration
An amplitude analysis of the $\Xi^+_c\to pK^-\pi^+$ decay together with a measurement of the $\Xi^+_c$ polarization vector in semileptonic beauty-hadron decays is presented. [...]
arXiv:2508.00492 ; LHCb-PAPER-2024-034 ; CERN-EP-2024-320. - 2025 - 38.
Fulltext - Full text - Fulltext - Full text

Detaljnije

Search for resonances decaying to photon pairs with masses between 4.9 and 19.4 GeV / LHCb Collaboration
A search is presented for axion-like particles (ALPs) with masses between 4.9 and 19.4 GeV decaying to a pair of photons, using proton-proton collisions collected with the LHCb detector during 2018 at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 2.1 fb$^{-1}$. [...]
arXiv:2507.14390 ; CERN-EP-2025-133 ; LHCb-PAPER-2025-012 ; LHCB-PAPER-2025-012. - 2025 - 21.
Full text - Related data file(s) - Full text - Fulltext

Detaljnije

Coherent photoproduction of $\rho^0, \omega$ and excited vector mesons in ultraperipheral PbPb collisions / LHCb Collaboration
The invariant-mass distribution for the coherent photoproduction of dipions in ultraperipheral PbPb collisions is measured using data, corresponding to an integrated luminosity of $ 224.6 \pm 9.6\ \mu$b$^{-1}$, collected by the LHCb experiment in 2018 at a nucleon-nucleon centre-of-mass energy $\sqrt{s_{\rm NN}}=5.02$ TeV. [...]
arXiv:2506.06250 ; CERN-EP-2025-106 ; LHCB-PAPER-2024-042. - 2025 - 22.
Fulltext - Related data file(s) - 00005 Invariant-mass fits to data (left) in the region between 400 and 1200\mev, where the signal contribution is parametrised by Eq.~\ref{eq:sodh1}, and (right) in the full region, where the signal model is parametrised by Eq.~\ref{eq:best}, which includes two additional resonances and a phase for the nonresonant component. - 00004 Invariant-mass fits to data (left) in the region between 400 and 1200\mev, where the signal contribution is parametrised by Eq.~\ref{eq:sodh1}, and (right) in the full region, where the signal model is parametrised by Eq.~\ref{eq:best}, which includes two additional resonances and a phase for the nonresonant component. - 00000 Graphical representation of $\rho$-meson photoproduction in PbPb collisions. The shaded area depicts the interaction of the $\rho$ meson with the target. - 00007 Differential cross-section multiplied by the branching fraction to dipions, in bins of rapidity, for $\omega,\rho^\prime$ and $\rho^{\prime\prime}$ coherent photoproduction. The error bars represent the statistical uncertainty, while the bands correspond to the total uncertainty. - 00006 Differential cross-section for coherent $\rho$ photoproduction as a function of rapidity. The LHCb error bars represent the statistical and total uncertainties. The shaded band corresponds to the estimated uncertainty on the GKZ prediction. The contributions due to the photon emitted from each ion are labelled as $W^+$ and $W^-$ and are explained further in Sec.~\ref{sec:supp}. Also shown are ALICE results at central rapidity and the output of the \textsc{STARlight} generator. - 00003 Invariant-mass fits to data where the signal model includes a contribution for the $\omega$ resonance with the parametrisation of (left) Eq.~\ref{eq:sod2} and (right) Eq.~\ref{eq:sodh1}. - 00002 Invariant-mass fits to data where the signal model includes a contribution for the $\omega$ resonance with the parametrisation of (left) Eq.~\ref{eq:sod2} and (right) Eq.~\ref{eq:sodh1}. - 00009 Differential cross-section for the $\rho$ meson as a function of rapidity for data (left) compared to the impulse approximation, Glauber model, and Gribov--Glauber model and (right) with the estimated contributions from photoproduction on each ion in the Gribov--Glauber model after including nuclear suppression factors. The impulse approximation has been scaled down by a factor of two so it can be viewed with this axis-range. - 00001 Dipion invariant-mass distribution with the result of the fit superimposed, where the signal is modelled by the function in Eq.~\ref{eq:sod1}. The lower panel shows the normalised residuals. - Fulltext - 00008 Differential cross-section for the $\rho$ meson as a function of rapidity for data (left) compared to the impulse approximation, Glauber model, and Gribov--Glauber model and (right) with the estimated contributions from photoproduction on each ion in the Gribov--Glauber model after including nuclear suppression factors. The impulse approximation has been scaled down by a factor of two so it can be viewed with this axis-range.

Detaljnije

Determination of the spin and parity of all-charm tetraquarks / CMS Collaboration
The traditional quark model accounts for the existence of baryons, such as protons and neutrons, which consist of three quarks, as well as mesons, composed of a quark-antiquark pair. [...]
arXiv:2506.07944 ; CMS-BPH-24-002 ; CERN-EP-2025-118 ; CMS-BPH-24-002-003. - 2025 - 43.
Additional information for the analysis - CMS AuthorList - Fulltext - CMS HEPData - Fulltext

Detaljnije

Elasticity, Plasticity, and Fracture Toughness of REBCO Coated Conductors Characterized via Micromechanical Tests at Room Temperature / Vernassa, G (CERN ; St. Etienne, Ecole des Mines) ; Rusinowicz, M (St. Etienne, Ecole des Mines) ; Kalácska, S (St. Etienne, Ecole des Mines) ; Sao-Joao, S (St. Etienne, Ecole des Mines) ; Bottura, L (CERN) ; Felice, H (IRFU, SPP, Saclay) ; Bordini, B (CERN) ; Bergheau, J M (CNRS, France) ; Kermouche, G (St. Etienne, Ecole des Mines)
REBCO, the leading candidate conductor for ultra high field magnets, is typically produced in the form of thin tapes, consisting of multiple layers of diverse materials with very different natures and properties. Knowledge of the mechanical properties of these different layers is crucial for magnet design. [...]
2025 - 7 p. - Published in : IEEE Trans. Appl. Supercond. 35 (2025) 8400407 Fulltext: PDF;

Detaljnije

10.

Impact of the drift length on the performance of MR-ToF devices / Maier, F M (CERN ; Greifswald U. ; TRIUMF ; Unlisted, US) ; Buchinger, F (McGill U.) ; Costa, B Arderucio (Troy U.) ; Heylen, H (CERN) ; Kanitz, C (CERN) ; Kwiatkowski, A A (TRIUMF) ; Lagaki, V (CERN ; Greifswald U.) ; Lechner, S (CERN) ; Leistenschneider, E (CERN ; LBNL, Berkeley) ; Neyens, G (CERN ; Leuven U.) et al.
Multi-Reflection Time-of-Flight (MR-ToF) devices are powerful tools for high-precision mass spectrometry, highly selective and high-flux mass separation as well as, most recently, for highly sensitive laser spectroscopic applications. In this work, various ion-optical simulations are conducted to provide insights into optimizing the design of the MR-ToF apparatus to enhance performance across its diverse application fields. [...]
2025 - Published in : Nucl. Instrum. Methods Phys. Res., A 1075 (2025) 170365 Fulltext: PDF;

Detaljnije

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