Browsing Department of Physics and Technology by Title
Now showing items 107-126 of 2195
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Calibration of the ALICE Photon Spectromter (PHOS) using the neutral pion to gamma gamma decay
(Master thesis, 2009-09-01)The Large Hadron Collider (LHC) is under construction beneath the border between Switzerland and France. If it is successful, it will accelerate and collide protons at 7 T eV per proton in center of mass. Furthermore, it ... -
Calibration of the photon spectrometer PHOS of the ALICE experiment
(Peer reviewed; Journal article, 2019)The procedure for the energy calibration of the high granularity electromagnetic calorimeter PHOS of the ALICE experiment is presented. The methods used to perform the relative gain calibration, to evaluate the geometrical ... -
Can magnetotail reconnection produce the auroral intensities observed in the conjugate ionosphere?
(Peer reviewed; Journal article, 2009-06)[1] In a recent case study, Borg et al. (2007) reported that an inverted V structure, caused by a field-aligned potential drop of 30 kV producing very strong X-ray aurora, was found in connection with tail reconnection. ... -
A case-control study of linear energy transfer and relative biological effectiveness related to symptomatic brainstem toxicity following pediatric proton therapy
(Journal article; Peer reviewed, 2022)Background and purpose A fixed relative biological effectiveness (RBE) of 1.1 (RBE1.1) is used clinically in proton therapy even though the RBE varies with properties such as dose level and linear energy transfer (LET). ... -
Catalysts for Enhanced CO2-CH4 Exchange in Natural Gas Hydrates. An experimental feasibility study of exchange enhancement by use of chemical additives
(Master thesis, 2013-06-01)Gas hydrate is a solid state of gas and water at high pressure and low temperature conditions. Vast energy potential is associated with gas hydrates and extensive on-going research aims at addressing the technical viability ... -
CDOM absorption properties of natural water bodies along extreme environmental gradients
(Peer reviewed; Journal article, 2019-09-24)We present absorption properties of colored dissolved organic matter (CDOM) sampled in six different water bodies along extreme altitudinal, latitudinal, and trophic state gradients. Three sites are in Norway: the mesotrophic ... -
Centrality and pseudorapidity dependence of the charged-particle multiplicity density in Xe–Xe collisions at √sNN=5.44 TeV
(Peer reviewed; Journal article, 2019-12-28)In this Letter, the ALICE Collaboration presents the first measurements of the charged-particle multiplicity density, dNch/dη, and total charged-particle multiplicity, Ntot ch , in Xe–Xe collisions at a centre-of-mass energy ... -
Centrality and transverse momentum dependence of inclusive J/ψ production at midrapidity in Pb–Pb collisions at √sNN=5.02 TeV
(Journal article; Peer reviewed, 2020-06-10)The inclusive J/ψ meson production in Pb–Pb collisions at a center-of-mass energy per nucleon–nucleon collision of √sNN = 5.02 TeV at midrapidity (|y| < 0.9) is reported by the ALICE Collaboration. The measurements are ... -
Centrality dependence of \(\mathbf{\psi}\)(2S) suppression in p-Pb collisions at \(\mathbf{\sqrt{{\textit s}_{\rm NN}}}\) = 5.02 TeV
(Peer reviewed; Journal article, 2016-06)The inclusive production of the \(\psi\)(2S) charmonium state was studied as a function of centrality in p-Pb collisions at the nucleon-nucleon center of mass energy \(\sqrt{s_{\rm NN}}\) = 5.02 TeV at the CERN LHC. The ... -
Centrality dependence of charged jet production in p-Pb collisions at \(\sqrt{s_\mathrm{NN}}\) = 5.02 TeV
(Peer reviewed; Journal article, 2016-05)Measurements of charged jet production as a function of centrality are presented for p-Pb collisions recorded at \(\sqrt{s_{\rm NN}} = 5.02\) TeV with the ALICE detector. Centrality classes are determined via the energy ... -
Centrality Dependence of Charged Particle Production at Large Transverse Momentum in Pb--Pb Collisions at \(\sqrt{s_{\rm{NN}}} = 2.76\) TeV
(Peer reviewed; Journal article, 2013-03)The inclusive transverse momentum (pT) distributions of primary charged particles are measured in the pseudo-rapidity range |\(\eta\)| < 0.8 as a function of event centrality in Pb–Pb collisions at \(\sqrt{s_{NN}}\) = 2.76 ... -
Centrality dependence of high-\(p_{\rm T}\) D meson suppression in Pb-Pb collisions at \(\sqrt{s_{\rm NN}}\) = 2.76 TeV
(Peer reviewed; Journal article, 2015-11)The nuclear modification factor, \(R_{\rm AA}\), of the prompt charmed mesons \({\rm D^0}\), \({\rm D^+}\) and \({\rm D^{*+}}\), and their antiparticles, was measured with the ALICE detector in Pb-Pb collisions at a ... -
Centrality dependence of inclusive J/\(psi\) production in p-Pb collisions at \(\sqrt{s_{\rm NN}}\) = 5.02 TeV
(Peer reviewed; Journal article, 2015-11)We present a measurement of inclusive J/\).psi\) production in p-Pb collisions at \(\sqrt{s_{\rm NN}}\) = 5.02 TeV as a function of the centrality of the collision, as estimated from the energy deposited in the Zero Degree ... -
Centrality dependence of particle production in p-Pb collisions at \(\sqrt{s_{\rm NN} }\)= 5.02 TeV
(Peer reviewed; Journal article, 2015-06)We report measurements of the primary charged particle pseudorapidity density and transverse momentum distributions in p-Pb collisions at \(\sqrt{s_{\rm NN}}\) = 5.02 TeV, and investigate their correlation with experimental ... -
Centrality dependence of the pseudorapidity density distribution for charged particles in Pb-Pb collisions at \(\sqrt{s_{\rm NN}}=5.02\) TeV
(Peer reviewed; Journal article, 2017-09)We present the charged-particle pseudorapidity density in Pb-Pb collisions at \(\sqrt{s_{\mathrm{NN}}}=5.02\,\mathrm{Te\kern-.25exV}\) in centrality classes measured by ALICE. The measurement covers a wide pseudorapidity ... -
Centrality dependence of the pseudorapidity density distribution for charged particles in Pb-Pb collisions at \(\sqrt{s_{NN}}\) = 2.76 TeV
(Peer reviewed; Journal article, 2013-11)We present the first wide-range measurement of the charged-particle pseudorapidity density distribution, for different centralities (the 0-5%, 5-10%, 10-20%, and 20-30% most central events) in Pb-Pb collisions at ... -
Centrality, rapidity and transverse momentum dependence of the J/\(psi\) suppression in Pb-Pb collisions at \(\sqrt{s_{NN}}\)=2.76 TeV
(Peer reviewed; Journal article, 2014-06)The inclusive J/\).psi\) nuclear modification factor \(R_{AA}\) in Pb-Pb collisions at \(\sqrt{s_{NN}}\).2.76TeV has been measured by ALICE as a function of centrality in the \(e^+e^-\) decay channel at mid-rapidity |y| ... -
CFD Analysis of Explosions with Hydrogen-Methane-Air Mixtures in Congested Geometries
(Journal article; Peer reviewed, 2022)Hydrogen is an enabler for de-carbonising the energy system in Europe by 2050. In the UK, several projects are investigating the feasibility of gradually blending hydrogen into the natural gas pipelines with the aim to ... -
CFD estimation of a resistance coefficient for an egg-shaped geometric dome
(Journal article; Peer reviewed, 2022)In aquaculture, new production technologies are under development and testing. One promising type of technology is the closed floating cage. Egget® is one of these newly developed technologies, which is egg-shaped and ... -
CFD modelling of hydrogen and hydrogen-methane explosions – Analysis of varying concentration and reduced oxygen atmospheres
(Journal article; Peer reviewed, 2023)This paper evaluates the predictive capabilities of the advanced consequence model FLACS-CFD for deflagrations involving hydrogen. Two modelling approaches are presented: the extensively validated model system originally ...