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Performance of the ATLAS muon triggers in Run 2
(Journal article; Peer reviewed, 2020-09)The performance of the ATLAS muon trigger system is evaluated with proton-proton (pp) and heavy-ion (HI) collision data collected in Run 2 during 2015–2018 at the Large Hadron Collider. It is primarily evaluated using ... -
Performance of the ATLAS RPC detector and Level-1 muon barrel trigger at √s=13 TeV
(Journal article; Peer reviewed, 2021)The ATLAS experiment at the Large Hadron Collider (LHC) employs a trigger system consisting of a first-level hardware trigger (L1) and a software-based high-level trigger. The L1 muon trigger system selects muon candidates, ... -
Performance of the ATLAS Transition Radiation Tracker in Run 1 of the LHC: Tracker properties
(Peer reviewed; Journal article, 2017)The tracking performance parameters of the ATLAS Transition Radiation Tracker (TRT) as part of the ATLAS inner detector are described in this paper for different data-taking conditions in proton-proton, proton-lead and ... -
Performance of the ATLAS trigger system in 2015
(Peer reviewed; Journal article, 2017-05)During 2015 the ATLAS experiment recorded \(3.8 \mathrm{fb}^{-1}\) of proton--proton collision data at a centre-of-mass energy of \(13 \mathrm{TeV}\), The ATLAS trigger system is a crucial component of the experiment, ... -
Performance of the electromagnetic pixel calorimeter prototype Epical-2
(Journal article; Peer reviewed, 2023)The first evaluation of an ultra-high granularity digital electromagnetic calorimeter prototype using 1.0–5.8 GeV/c electrons is presented. The 25 × 106 pixel detector consists of 24 layers of ALPIDE CMOS MAPS sensors, ... -
Performance of the High Level Trigger gamma-conversion reconstruction chain in the ALICE central tracking detectors
(Master thesis, 2011-06-01)Photons are produced through various processes in the particle and nuclei collisions at the LHC, and pose as useful probes of the formation of a Qaurk-Gluon Plasma. The probability of a photon converting within the central ... -
Performance of the joint LST-1 and MAGIC observations evaluated with Crab Nebula data
(Journal article; Peer reviewed, 2023)Aims. Large-Sized Telescope 1 (LST-1), the prototype for the Large-Sized Telescope at the upcoming Cherenkov Telescope Array Observatory, is concluding its commissioning phase at the Observatorio del Roque de los Muchachos ... -
Performance of the missing transverse momentum triggers for the ATLAS detector during Run-2 data taking
(Journal article; Peer reviewed, 2020)The factor of four increase in the LHC luminosity, from 0.5 × 10^34 cm^−2 s^−1 to 2.0 × 10^34cm^−2 s^−1, and the corresponding increase in pile-up collisions during the 2015–2018 data-taking period, presented a challenge ... -
Performance of the upgraded PreProcessor of the ATLAS level-1 calorimeter trigger
(Journal article; Peer reviewed, 2020-11)The PreProcessor of the ATLAS Level-1 Calorimeter Trigger prepares the analogue trigger signals sent from the ATLAS calorimeters by digitising, synchronising, and calibrating them to reconstruct transverse energy deposits, ... -
Performance of top-quark and WW-boson tagging with ATLAS in Run 2 of the LHC
(Peer reviewed; Journal article, 2019-04-30)The performance of identification algorithms (“taggers”) for hadronically decaying top quarks and W bosons in pp collisions at s√ = 13 TeV recorded by the ATLAS experiment at the Large Hadron Collider is presented. A set ... -
Periodic shock-emission from acoustically driven cavitation clouds: a source of the subharmonic signal
(Peer reviewed; Journal article, 2014-12)Single clouds of cavitation bubbles, driven by 254 kHz focused ultrasound at pressure amplitudes in the range of 0.48–1.22 MPa, have been observed via high-speed shadowgraphic imaging at 1 × 10⁶ frames per second. Clouds ... -
Permittivity measurements using dual open ended coaxial probes
(Master thesis, 2012-11-19)The motivation for this study has been to conduct a feasibility study on a measuring device to monitor hydrate formation close to the inner surface of a pipe where a multiphase hydrocarbon fluid mixture is flowing. This ... -
Perspectives on weak interactions in complex materials at different length scales
(Journal article; Peer reviewed, 2022)Nanocomposite materials consist of nanometer-sized quantum objects such as atoms, molecules, voids or nanoparticles embedded in a host material. These quantum objects can be exploited as a super-structure, which can be ... -
Petrophysical characterization in paleokarst and effect on reservoir properties
(Master thesis, 2012-06-29)Karst is a geological process that can enhance porosity and permeability within a carbonate succession, thus affecting the heterogeneity producing a substantial effect on the fluid flow. The subject is not widely explored ... -
Phase Field Theory Modeling of CH4 and CO2 Fluxes from Exposed Natural Gas Hydrate Reserviors
(Master thesis, 2009-10-01)Natural gas hydrates are widely distributed in sediments along continental margins, and harbor enormous amounts of energy. Gas hydrates are crystalline solids which occur when water molecules form a cage like structure ... -
Phase field theory modeling of CH4/CO2 gas hydrates in gravity fields
(Peer reviewed; Journal article, 2011)Natural gas hydrates in reservoirs are thermodynamically unstable due to the interactions with surrounding fluids (aqueous, gas) and mineral surfaces. Depending on the local flow hydrate will dissociate as well as reform. ... -
Phase transitions in non-equilibrium dynamical systems
(Doctoral thesis, 2010-12-09)This work is a summary of three papers (references [5, 14, 24]), which deal with modelling the hadronization and freeze-out in heavy ion collisions. There is evidence that this is a non-equilibrium process, and therefore ... -
\(\phi\) meson production in Pb-Pb collisions at \(\sqrt s_{NN}\)=5.02 TeV with ALICE at the LHC
(Peer reviewed; Journal article, 2017-11)Strangeness production is a key tool to understand the properties of the medium formed in heavy-ion collisions: an enhanced production of strange particles was early proposed as one of the signatures of the Quark-Gluon ... -
\(\phi\)-meson production at forward rapidity in p-Pb collisions at \(\sqrt{s_{\rm NN}}\) = 5.02 TeV and in pp collisions at \(\sqrt{s}\) = 2.76 TeV
(Peer reviewed; Journal article, 2017-03)The first measurement of \(\phi\).meson production in p-Pb collisions at a nucleon-nucleon centre-of-mass energy \(\sqrt{s_{\rm NN}}\) = 5.02 TeV has been performed with the ALICE apparatus at the LHC. \(\phi\) mesons have ...