• R-parity violating chargino decays at the LHC 

      Bomark, Nils-Erik; Kvellestad, Anders; Lola, Smaragda; Osland, Per; Raklev, Are (Peer reviewed; Journal article, 2014-12)
      Supersymmetric models with R-parity violation (RPV) have become more popular following the lack of any excess of missing energy events at the 8 TeV LHC. To identify such models, the suggested searches generally rely on the ...
    • Radiation hard 3D silicon pixel sensors for use in the ATLAS detector at the HL-LHC 

      Heggelund, Andreas; Huiberts, Simon Kristian; Dorholt, Ole; Read, Alexander Lincoln; Røhne, Ole Myren; Sandaker, Heidi; Lauritzen, Magne Eik; Stugu, Bjarne Sandvik; Kok, Angela; Koybasi, Ozhan; Povoli, Marco; Bomben, M.; Lange, J.; Rummler, André (Journal article; Peer reviewed, 2022)
      The High Luminosity LHC (HL-LHC) upgrade requires the planned Inner Tracker (ITk) of the ATLAS detector to tolerate extremely high radiation doses. Specifically, the innermost parts of the pixel system will have to withstand ...
    • Radiation treatment monitoring using multimodal functional imaging: PET/CT (18F-Fluoromisonidazole & 18F-Fluorocholine) and DCE-US 

      Arteaga-Marrero, Natalia; Brekke Rygh, Cecilie; Mainou-Gomez, Jose Francisco; Adamsen, Tom Christian; Lutay, Nataliya; Reed, Rolf K; Olsen, Dag Rune (Peer reviewed; Journal article, 2015-12-18)
      Background: This study aims to assess the effect of radiation treatment on the tumour vasculature and its downstream effects on hypoxia and choline metabolism using a multimodal approach in the murine prostate tumour model ...
    • A Rapid Gamma-Ray Glow Flux Reduction Observed From 20 km Altitude 

      Kochkin, Pavlo; Sarria, David Alexandre Stephan; Lehtinen, Nikolai Grigorievich; Mezentsev, Andrey; Yang, Shiming; Genov, Georgi; Ullaland, Kjetil; Marisaldi, Martino; Østgaard, Nikolai; Christian, Hugh J.; Grove, J.E.; Quick, M.; Al-Nussirat, S.; Wulf, E (Journal article; Peer reviewed, 2021)
      Two gamma-ray glows were observed by a high-altitude NASA ER-2 aircraft flying at 20 km altitude over a thunderstorm in Colorado, USA. The flux of the first glow rapidly intensified and then abruptly decreased within a few ...
    • Rapidity and transverse-momentum dependence of the inclusive J/\(mathbf{\psi}\) nuclear modification factor in p-Pb collisions at \(\mathbf{\sqrt{\textit{s}_{NN}}}=5.02\) TeV 

      Adam, Jaroslav; Adamová, Dagmar; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agrawal, Nikita; Ahammed, Zubayer; Ahmed, Ijaz; Ahn, Sang Un; Aimo, Ilaria; Alme, Johan; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Altinpinar, Sedat; Djuvsland, Øystein; Haaland, Øystein Senneset; Huang, Meidana; Lønne, Per-Ivar; Nystrand, Joakim; Rehman, Attiq ur; Røhrich, Dieter; Ullaland, Kjetil; Velure, Arild; Wagner, Boris; Zhou, Zhuo; Arsene, Ionut Christian; Bätzing, Paul Christoph; Dordic, Olja; Lindal, Svein; Mahmood, Sohail Musa; Milosevic, Jovan; Qvigstad, Henrik; Richter, Matthias; Røed, Ketil; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Wikne, Jon Christopher; Zhao, Chengxin; Langøy, Rune; Lien, Jørgen André; Aiola, Salvatore; Ajaz, Muhammad; Akindinov, Alexander; Alam, Sk Noor; Aleksandrov, Dimitry; Alessandro, Bruno; Alexandre, Didier; Alfaro, Molina; Alici, Andrea; ALICE, Collaboration (Peer reviewed; Journal article, 2015-06)
      We have studied the transverse-momentum \(p_{\rm T}\) dependence of the inclusive J/\).psi\) production in p-Pb collisions at \(\sqrt{s_{\rm NN}} = 5.02\) TeV, in three center-of-mass rapidity \(y_{\rm cms}\) regions, ...
    • Reaching towards higher masses of supersymmetric particles decaying to tau leptons 

      Olsen, Agnethe Seim (Master thesis, 2014-06-30)
      This thesis presents an optimisation of the search for SUSY in final states with one tau lepton, jets and missing transverse energy. The SUSY model considered is mSUGRA with the parameter values: A_0 = -2m0, tan(beta) = ...
    • Reactive transport modelling of hydrate phase transition dynamics in porous media 

      Vafaei, Mohammad Taghi (Doctoral thesis, 2015-03-27)
      Gas hydrate is believed to be so abundant in nature that some estimates suggest it contains more than two times equivalent energy of the whole fossil fuels on Earth. Besides, reservoir hydrates have other important aspects ...
    • Reactive Transport of CO2 in Saline Aquifers with implicit geomechanical analysis 

      Kvamme, Bjørn; Liu, Shunping (Peer reviewed; Journal article, 2009)
      Geological storage of CO2 in saline aquifers is a promising way to reduce the concentration of the greenhouse gas in the atmosphere. Injection of CO2 will, however, lead to dissolution of minerals in regions of lowered pH ...
    • Readout Electronics for the Upgraded ITS Detector in the ALICE Experiment 

      Nesbø, Simon Voigt (Doctoral thesis, 2022-06-03)
      ALICE is undergoing upgrades during the Long Shutdown (LS) 2 of the LHC to improve its performance and capabilities, and to prepare the experiment for the increases in luminosity provided by the LHC in Run 3 and Run 4. One ...
    • Recalibration of the MEPED Proton Detectors Onboard NOAA POES Satellites 

      Ødegaard, Linn-Kristine Glesnes (Master thesis, 2013-07-04)
      In this thesis we have calibrated energetic proton data from the solid state detectors of the MEPED instrument onboard the satellites NOAA 15, 16, 17, 18, and MetOp 02. All these satellites are part of the NOAA/POES program, ...
    • Reciprocity calibration method for ultrasonic piezoelectric transducers in air 

      Mosland, Eivind (Master thesis, 2013-06-17)
      The conventional three-transducer reciprocity calibration method for use in gas at ambient pressure and temperature is studied. Modifications are introduced, introducing correction factors for absorption in air, diffraction ...
    • Reciprocity calibration of ultrasonic piezoelectric disks in air 

      Andersen, Kenneth Kirkeng (Master thesis, 2015-11-20)
      The phase response of a transducer acting as a transmitter or receiver of sound is important in many industrial applications, such as fiscal measurements of natural gas, therein multipath ultrasonic transit-time flow meters, ...
    • Reconstruction and identification of boosted di-τ systems in a search for Higgs boson pairs using 13 TeV proton-proton collision data in ATLAS 

      Aad, Georges; Abbott, Brad; Abbott, Dale C.; Abed Abud, Adam; Abeling, Kira; Abhayasinghe, Deshan Kavishka; Abidi, Syed Haider; AbouZeid, Ossama Sherif Alexander; Abraham, Nadine L.; Abramowicz, Halina; Bjørke, Kristian; Bugge, Magnar Kopangen; Cameron, David Gordon; Catmore, James Richard; Garonne, Vincent; Gramstad, Eirik; Heggelund, Andreas Løkken; Hellesund, Simen; Håland, Even Simonsen; Morisbak, Vanja; Oppen, Henrik; Ould-Saada, Farid; Pedersen, Maiken; Read, Alexander Lincoln; Rye, Eli Bæverfjord; Røhne, Ole Myren; Sandaker, Heidi; Vadla, Knut Oddvar Høie; Buanes, Trygve; Djuvsland, Julia Isabell; Eigen, Gerald; Fomin, Nikolai; Lipniacka, Anna; Lee, Graham Richard; Martin dit Latour, Bertrand; Stugu, Bjarne; Træet, Are Sivertsen; Abreu, Henso; Abulaiti, Yiming; Acharya, Bobby S.; Achkar, Baida; Adam, Lennart; Adam-Bourdarios, Claire; Adamczyk, Leszek; Adamek, Lukas; Adelman, Jareed; Adersberger, Michael; Adigüzel, Aytül; Adorni, Sofia; Adye, Tim; ATLAS, Collaboration (Journal article; Peer reviewed, 2020-11-30)
      In this paper, a new technique for reconstructing and identifying hadronically decaying τ+τ− pairs with a large Lorentz boost, referred to as the di-τ tagger, is developed and used for the first time in the ATLAS experiment ...
    • Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton-proton collisions at the LHC 

      Aaboud, Morad; Aad, Georges; Abbott, Brad; Abdallah, Jalal; Abdinov, Ovsat Bahram oglu; Abeloos, Baptiste; Aben, Rosemarie; AbouZeid, Hass; Abraham, Nadine L.; Abramowicz, Halina; Buanes, Trygve; Dale, Ørjan; Eigen, Gerald; Kastanas, Alex; Liebig, Wolfgang; Lipniacka, Anna; Martin dit Latour, Bertrand; Mæland, Steffen; Smestad, Lillian; Stugu, Bjarne; Yang, Zongchang; Zalieckas, Justas; Bugge, Magnar Kopangen; Cameron, David Gordon; Catmore, James Richard; Feigl, Simon; Franconi, Laura; Garonne, Vincent; Gjelsten, Børge Kile; Gramstad, Eirik; Morisbak, Vanja; Nilsen, Jon Kerr; Ould-Saada, Farid; Pajchel, Katarina; Raddum, Silje Hattrem; Read, Alexander Lincoln; Røhne, Ole Myren; Sandaker, Heidi; Serfon, Cédric; Stapnes, Steinar; Strandlie, Are; Abreu, Henso; Abreu, Rômulo F.; Abulaiti, Yiming; Acharya, Bobby S.; Adamczyk, Leszek; Adams, David; Adelman, Jareed; Adersberger, Michael; ATLAS, Collaboration (Peer reviewed; Journal article, 2017-05)
      This paper presents the method and performance of primary vertex reconstruction in proton--proton collision data recorded by the ATLAS experiment during Run 1 of the LHC. The studies presented focus on data taken during ...
    • Recreating the top quark: Commissioning and monitoring of the ATLAS Inner Detector and search for New Physics with heavy particles. 

      Tonoyan, Arshak (Doctoral thesis, 2012-02-03)
      The ATLAS (A Toroidal Lhc ApparatuS) experiment is one of the two general purpose experiments at the Large Hadron Collider (LHC) at CERN, the European Organization for Nuclear Research. The LHC is a proton-proton and ion-ion ...
    • Reducing systematic errors due to deformation of organs at risk in radiotherapy 

      Rørtveit, Øyvind Lunde; Hysing, Liv Bolstad; Stordal, Andreas Størksen; Pilskog, Sara Margareta Cecilia (Journal article; Peer reviewed, 2021)
      Purpose In radiotherapy (RT), the planning CT (pCT) is commonly used to plan the full RT-course. Due to organ deformation and motion, the organ shapes seen at the pCT will not be identical to their shapes during RT. Any ...
    • Reduction of PTV margins for elective pelvic lymph nodes in online adaptive radiotherapy of prostate cancer patients 

      Brennsæter, John Alfred; Dahle, Tordis Johnsen; Moi, Jannicke Nøkling; Svanberg, Ingvild Førsvoll; Haaland, Gry Sandvik; Pilskog, Sara Margareta Cecilia (Journal article; Peer reviewed, 2023)
      Background Cone beam CT (CBCT) based online adaptive radiotherapy (oART) is a new development in radiotherapy. With oART, the requirements for planning target volume (PTV) margins differ from standard therapy because ...
    • The refractive and diffractive contributions to GPS signal scintillation at high latitudes during the geomagnetic storm on 7-8 September 2017 

      Zheng, Yuhao; Xiong, Chao; Jin, Yaqi; Liu, Dun; Oksavik, Kjellmar; Xu, Chunyu; Zhu, Yixun; Gao, Shunzu; Wang, Fengjue; Wang, Hui; Yin, Fan (Journal article; Peer reviewed, 2022)
      Different indices have been used to reflect, or monitor the ionospheric scintillation, e.g. the detrended carrier phase, σφ, S4, the rate of change of the vertical total electron content index (vROTI), as well as the ...