Browsing Department of Physics and Technology by Title
Now showing items 78-97 of 2162
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Auroral Region Morphology and the Influence of Earth’s Rotation on Geospace Dynamics
(Doctoral thesis, 2024-06-07)Koblingen mellom solvinden, magnetosfæren, og ionosfæren er avgjørende for å forstå verdensrommet og dens påvirkning på Jorden. I de øvre lagene av atmosfæren ved polene, spesielt i området kjent som auroraregionen, møtes ... -
Automated XY-table for the characterisation of arrays of pixel sensors for photons and charge particles
(Master thesis, 2010-06-01)A variety of arrays of pixels sensors (pixel = picture elements) have been developed during the last 30 years for the detection of photons and charge particles. Pixel based semiconductor detectors are not only used for ... -
Autonomic Operation of a Large High Performance On-Line Compute Cluster
(Doctoral thesis, 2015-12-10)A High-Level Trigger (HLT) system is composed of both hardware and software. Designing the physical layout of the cluster mainly concerns the hardware; node distribution, network layout, estimation of power requirements, ... -
Azimuthal anisotropy of charged jet production in \(\sqrt{s_{\rm NN}}=2.76\) TeV Pb–Pb collisions
(Peer reviewed; Journal article, 2016-02)This paper presents measurements of the azimuthal dependence of charged jet production in central and semi-central \(\sqrt{s_{\rm NN}}=2.76\) TeV Pb–Pb collisions with respect to the second harmonic event plane, quantified ... -
Azimuthal anisotropy of D-meson production in Pb-Pb collisions at √sNN =2.76 TeV
(Peer reviewed; Journal article, 2014-09)The production of the prompt charmed mesons D0, D+, and D*+ relative to the reaction plane was measured in Pb-Pb collisions at a center-of-mass energy per nucleon-nucleon collision of √sNN=2.76TeV with the ALICE detector ... -
Azimuthal Anisotropy of Heavy-Flavor Decay Electrons in p-Pb Collisions at √sNN=5.02 TeV
(Peer reviewed; Journal article, 2019)Angular correlations between heavy-flavor decay electrons and charged particles at midrapidity ( | η | < 0.8 ) are measured in p -Pb collisions at √ s N N = 5.02 TeV . The analysis is carried out for the 0%–20% (high) ... -
Azimuthal correlations of prompt D mesons with charged particles in pp and p–Pb collisions at √sNN=5.02TeV
(Journal article; Peer reviewed, 2020-10-22)The measurement of the azimuthal-correlation function of prompt D mesons with charged particles in pp collisions at s√=5.02 TeV and p–Pb collisions at sNN−−−√=5.02 TeV with the ALICE detector at the LHC is reported. The ... -
Azimuthally differential pion femtoscopy in Pb-Pb collisions at \(\sqrt{s_{\rm NN}}=2.76\) TeV
(Peer reviewed; Journal article, 2017-06)We present the first azimuthally differential measurements of the pion source size relative to the second harmonic event plane in Pb-Pb collisions at a center-of-mass energy per nucleon-nucleon pair of \(\sqrt{s_{\rm ... -
Azimuthally differential pion femtoscopy relative to the second and thrid harmonic in Pb-Pb 2.76 TeV collisions from ALICE
(Peer reviewed; Journal article, 2017-11)Azimuthally differential femtoscopic measurements, being sensitive to spatio-temporal characteristics of the source as well as to the collective velocity fields at freeze-out, provide very important information on the ... -
Azimuthally-differential pion femtoscopy relative to the third harmonic event plane in Pb–Pb collisions at √sNN = 2.76 TeV
(Peer reviewed; Journal article, 2018-06-22)Azimuthally-differential femtoscopic measurements, being sensitive to spatio-temporal characteristics of the source as well as to the collective velocity fields at freeze out, provide very important information on the ... -
The BABAR detector: Upgrades, operation and performance
(Peer reviewed; Journal article, 2013-11-21)The BaBar detector operated successfully at the PEP-II asymmetric e+e− collider at the SLAC National Accelerator Laboratory from 1999 to 2008. This report covers upgrades, operation, and performance of the collider and the ... -
Background removal from global auroral images: Data driven dayglow modelling
(Journal article; Peer reviewed, 2023)Global images of auroras obtained by cameras on spacecraft are a key tool for studying the near-Earth environment. However, the cameras are sensitive not only to auroral emissions produced by precipitating particles, but ... -
Bacterial proteins with cleaved or uncleaved signal peptides of the general secretory pathway
(Peer reviewed; Journal article, 2011-12-21)Correct protein compartmentalization is a key step for molecular function and cell viability, and this is especially true for membrane and externalized proteins of bacteria. Recent proteomic reports of Bacillus subtilis ... -
Balance functions of (un)identified hadrons in Pb–Pb, p–Pb, and pp collisions at the LHC
(Peer reviewed; Journal article, 2019-02)In ultrarelativistic heavy-ion collisions, correlations of particles with opposite quantum numbers provide insight into quark production mechanisms and time scales, collective motion, and re-scattering in the hadronic ... -
Bayesian modelling of organ deformations in radiotherapy
(Doctoral thesis, 2023-06-13)Moderne strålebehandling mot kreft er skreddarsydd for å gje ein høg stråledose tilpassa svulsten (målvolumet), mens så lite dose som mogleg vert gitt til det friske vevet omkring. Den totale dosen vert levert over nokre ... -
Beam diffraction effects in guided-wave transmission of fluid embedded elastic plate. Influence of receiver distance and finite aperture.
(Master thesis, 2018-06-23)For the past decades, plate transmission effects have been extensively studied with the incentive of applying the knowledge in GUW methods in the industry. With these studies, multiple anomalous effects have been identified, ... -
Beauty production in pp collisions at √s=2.76 TeV measured via semi-electronic decays
(Peer reviewed; Journal article, 2014-11)The ALICE Collaboration at the LHC reports measurement of the inclusive production cross section of electrons from semi-leptonic decays of beauty hadrons with rapidity |y|<0.8 and transverse momentum 1<pT<10 GeV/c, in pp ... -
Bestemmelse av egenskaper til piezoelektriske skiver med lavt diameter/tykkelse forhold
(Master thesis, 2009-11-20)Oppgaven tar for seg mekaniske, elektriske og akustiske målinger i luft på piezoelektriske skiver av typen PZT-5A med et diameter/tykkelsesforhold på 7.5. Målingene blir sammenlignet med teoretiske modeller for skivenes ... -
Beyond cuts in small signal scenarios: Enhanced sneutrino detectability using machine learning
(Journal article; Peer reviewed, 2023)We investigate enhancing the sensitivity of new physics searches at the LHC by machine learning in the case of background dominance and a high degree of overlap between the observables for signal and background. We use two ... -
Bifurcated Current Sheet Observed on the Boundary of Kelvin-Helmholtz Vortices
(Journal article; Peer reviewed, 2021)On May 5, 2017 MMS observed a bifurcated current sheet at the boundary of Kelvin-Helmholtz vortices (KHVs) developed on the dawnside tailward magnetopause. We use the event to enhance our understanding of the formation and ...