Now showing items 175-194 of 1365

• #### D meson elliptic flow in non-central Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76TeV ﻿

(Peer reviewed; Journal article, 2013-09)
Azimuthally anisotropic distributions of $D^0, D^+$ and $D^{*+}$ mesons were studied in the central rapidity region (|y| < 0.8) in Pb-Pb collisions at a centre-of-mass energy $\sqrt{s_{NN}}$ = 2.76 TeV per nucleon-nucleon ...
• #### D-meson azimuthal anisotropy in mid-central Pb-Pb collisions at $\mathbf{\sqrt{s_{\rm NN}}=5.02}$ TeV ﻿

(Peer reviewed; Journal article, 2018-03)
The azimuthal anisotropy coefficient $v_2$ of prompt D\)^0\), D\)^+\), D\)^{*+}\) and D$_s^+$ mesons was measured in mid-central (30-50% centrality class) Pb-Pb collisions at a centre-of-mass energy per nucleon pair ...
• #### D-meson nuclear modification factor and elliptic flow measurements in Pb–Pb collisions at $\sqrt {s_{NN}}$ = 5.02TeV with ALICE at the LHC ﻿

(Peer reviewed; Journal article, 2017-11)
ALICE measured the nuclear modification factor $R_{AA}$ and elliptic flow $\nu_{2}$ of D mesons $D^{0}$. $D^{+}$. $D^{⁎+}$ and $D^{s+}$ in semi-central Pb–Pb collisions at $\sqrt{s_{NN}} =5.02$ TeV. The ...
• #### D-meson production in $p$–Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV and in $pp$ collisions at $\sqrt{s}=7$ TeV ﻿

(Peer reviewed; Journal article, 2016-11)
The production cross sections of the prompt charmed mesons D\)^0\), D\)^+\), D\)^{*+}\) and D$_{\rm s}^+$ were measured at mid-rapidity in p-Pb collisions at a centre-of-mass energy per nucleon pair $\sqrt{s_{\rm ... • #### D0-electron correlations in p–Pb collisions at \(\sqrt{s_{\rm{NN}}}$ = 5.02 TeV ﻿

(Doctoral thesis, 2017-04-21)
In collisions of lead nuclei at the Large Hadron Collider (LHC) at CERN, a state of matter called Quark-Gluon Plasma (QGP) is formed, where quarks and gluons are no longer confined into hadrons. Heavy-flavour quarks, i.e., ...
• #### Dark matter and fundamental physics with the Cherenkov Telescope Array ﻿

(Peer reviewed; Journal article, 2013-03)
The Cherenkov Telescope Array (CTA) is a project for a next-generation observatory for very high energy (GeV–TeV) ground-based gamma-ray astronomy, currently in its design phase, and foreseen to be operative a few years ...
• #### Dark Matter Searches with ATLAS and Fermi ﻿

(Master thesis, 2013-06-03)
This thesis presents Dark matter inspired searches for supersymmetry with a one-tau analysis at ATLAS, which excludes a region close to that of allowed dark matter densities at m_0 ~ 400 GeV, m_1/2 ~ 600 GeV, tan \beta = ...
• #### Dawn-dusk asymmetries in the coupled solar wind-magnetosphere-ionosphere system: a review ﻿

(Peer reviewed; Journal article, 2014-07-01)
Dawn–dusk asymmetries are ubiquitous features of the coupled solar-wind–magnetosphere–ionosphere system. During the last decades, increasing availability of satellite and ground-based measurements has made it possible to ...
• #### Dayside and nightside magnetic field responses at 780 km altitude to dayside reconnection ﻿

(Peer reviewed; Journal article, 2017-02)
During southward interplanetary magnetic field, dayside reconnection will drive the Dungey cycle in the magnetosphere, which is manifested as a two‐cell convection pattern in the ionosphere. We address the response of the ...
• #### Decontamination of persistent organic pollutants in fishmeal and fish oil. Process optimization and modeling ﻿

(Doctoral thesis, 2011-10-07)
Persistent organic pollutants (POPs) are fat soluble chemical substances that persist in the environment and bioaccumulate in the food chain. Through long-range environmental transportation by air, water and migratory ...
• #### Demonstrating the potential of CO2 hydrate self-sealing in Svalbard, Arctic Norway ﻿

(Peer reviewed; Journal article, 2019-10)
Here we report the potential self-sealing properties of CO2 hydrate for the Longyearbyen CO2 Lab’s shallow aquifer in Svalbard, Arctic Norway, through hydrate formation experiments. The experiments were conducted on a 9 cm ...
• #### Design and Development of the SMILE SXI Radiation Shutter Control System ﻿

(Master thesis, 2018-06-19)
This thesis concerns the design, implementation, testing and verification of the radiation shutter control system, an embedded, microcontroller-based system, to be used in the Solar Wind Magnetosphere Ionosphere Link ...
• #### Design and Implementation of a High-Speed Readout and Control System for a Digital Tracking Calorimeter for proton CT ﻿

(Doctoral thesis, 2021-02-18)
Particle therapy, a non-invasive technique for treating cancer using protons and light ions, has become more and more common. For example, a particle treatment facility is currently being built, in Bergen, Norway. Proton ...
• #### Design and implementation of fast and sparsified readout for Monolithic Active Pixel Sensors ﻿

(Doctoral thesis, 2010-11-26)
This thesis focuses on the development of smart pixel readout architectures that should ultimately be targeted for the Micro-Vertex Detector (MVD) of the CBM (Compressed Baryonic Matter) experiment. The technical challenge ...
• #### Design and Simulation of Pixel Layout and Data Processing Algorithms for the DEEP Instrument ﻿

(Master thesis, 2018-10-17)
A team of researchers at Birkeland Centre for Space Science is developing an instrument that is able to measure particle precipitation into the atmosphere. The instrument consist of both electron and proton detectors, hence ...
• #### Design of a 60 GHz Low Noise Amplifier in a 0.13 µm SiGe BiCMOS Process ﻿

(Master thesis, 2016-06-01)
The Large Hadron Collider (LHC) in CERN outside Geneva in Switzerland is scheduled for an upgrade to improve the luminosity. This upgrade will require higher granularity for the triggering system, increasing the need for ...
• #### Design of a 60 GHz Power Amplifier in a 0.13 µm SiGe BiCMOS Process ﻿

(Master thesis, 2016-06-01)
The wide bandwidth in the unlicensed 60 GHz band enable short range wireless data transfer in the order of tens of gigabit per second. This, combined with the relatively low-cost, very high performance SiGe fabrication ...
• #### Design of a 60 GHz VCO Hybrid Microstrip Resonator in a 0.13-µm Sige process ﻿

(Master thesis, 2017-06-29)
Augmented reality, 4K television and video gaming. These are just some examples were the wireless products lacks performance in terms of multi-gigabit data transfers. A solution to this challenge is the 60 GHz band. The ...
• #### Design of a high power OOK modulator and verification of circuits in 60GHz SiGe BiCMOS ﻿

(Master thesis, 2017-06-29)
In this thesis, components for the UiB 60 GHz system are verified numerically and an on-off-keying (OOK) modulator is designed. Presence of mass in particle detector systems decrease the accuracy measuring the particle ...
• #### Design of an Embedded Readout System for the ALOFT Gamma-Ray Detector Instrument ﻿

(Master thesis, 2018-10-24)
Birkeland Center for Space Science has proposed a campaign known as the Airborne Lightning Observatory for FEGS & TGFs (ALOFT) to study Terrestrial Gamma-Ray Flashes (TGFs). TGFs are the most energetic natural phenomena ...