Yngve Inntjore Levinsen

• Garoby, Roland; Vergara, Antonio; Danared, Håkan; Alonso, Isabel; Bargalló, Enric & Cheymol, Benjamin [Show all 74 contributors for this article] (2018). The European Spallation Source Design. Physica Scripta. ISSN 0031-8949. 93:129501, p. 1–128. doi: 10.1088/1402-4896/aa9bff.
• Midttun, Øystein; Levinsen, Yngve Inntjore; Miyamoto, R & Plostinar, DC (2017). Benchmarking of the ESS LEBT in TraceWin and IBSimu, Proceedings of the 8th International Particle Accelerator Conference. JACoW. ISSN 978-3-95450-182-3. p. 4445–4447. doi: 10.18429/JACoW-IPAC2017-THPVA013.
• Appleby, Robert B; Burkhardt, Helmut; Corti, Gloria; Levinsen, Yngve Inntjore; Lieng, Magnus H & Talanov, Vladim (2012). Simulation of Machine Induced Background in the LHCb Experiment: Methodology and Implementation. IEEE Transactions on Nuclear Science. ISSN 0018-9499. 59(4), p. 1681–1694. doi: 10.1109/TNS.2012.2202402.

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• Fackelman, Eric Daniel; Sjobak, Kyrre Ness; Gjersdal, Håvard; Adli, Erik; Thomas, Cyrille & Levinsen, Yngve Inntjore [Show all 7 contributors for this article] (2023). SIMULATION OF THE ESS PROTON BEAM WINDOW SCATTERING. Show summary

  The European Spallation Source produces neutrons used for science by delivering a 5 MW proton beam to a tungsten target. The proton beam parameters must remain within a well-defined range during all phases of facility exploitation. The proton beam parameters are measured and monitored by an instrumentation suite, among which are two beam imaging systems. Parameters such as position and beam current density can be calculated from the images, supporting beam tuning and operation. However, one of the two systems may be affected by beam scattering. In this paper, we will focus on modelling the impact of the scattering on the beam on target distribution. The modelling process, involving simulation codes such as Geant4 and two-dimensional convolution in Matlab, is described. Initially, Geant4 simulates a scattered pencil beam. The resulting distribution is fitted and can be used similarly to an instrument response in image processing to model any possible beam distribution. Finally, we discuss the results of the scattered beam imaging model, showing the range of applications of the model and the impact of scattering on the beam parameters.

• Adli, Erik; Gjersdal, Håvard; Sjobak, Kyrre Ness; Christoforo, Mark Greyson; Fackelman, Eric Daniel & Røhne, Ole Myren [Show all 17 contributors for this article] (2022). PROGRESS OF THE ESS PROTON BEAM IMAGING SYSTEMS. Show summary

  The ESS Target Proton Beam Imaging Systems has the objective to image the 5 MW ESS proton beam as it enters the spallation target. The imaging systems has to operate in a harsh radiation environment, leading to a number of challenges : development of radiation hard photon sources, long and aperture-restricted optical paths and fast electronics required to provide rapid information in case of beam anoma- lies. This paper outlines how main challenges of the imaging systems have been addressed, and the status of deployment as ESS gets closer to beam.

• Garoby, Roland; Vergara, A.; Danared, H.; Alonso, I.; Bargallo, E. & Cheymol, B. [Show all 73 contributors for this article] (2018). Erratum: The European spallation source design (Physica Scripta (2018) 93 (014001) DOI: 10.1088/1402-4896/aa9bff). Physica Scripta. ISSN 0031-8949. 93(12). doi: 10.1088/1402-4896/aaecea.
• Kildemo, Morten; Levinsen, Yngve Inntjore; Le Roy, S & Sondergard, E (2009). Staircase and saw-tooth field emission steps from nanopatterned n-type GaSb surfaces. Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films. ISSN 0734-2101. 27(5), p. L18–L23. doi: 10.1116/1.3168562.
• Levinsen, Yngve Inntjore (2012). Machine Induced Experimental Background Conditions in the LHC. Det matematisk naturvitenskapelige fakultet.

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