Erik Bergbäck Knudsen

Erik Bergbäck Knudsen

Research Engineer

DTU PHYSICS
Department of Physics

Technical University of Denmark

Fysikvej

Building 307, room 231

2800 Kgs. Lyngby

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2019
 

Three dimensional polarimetric neutron tomography-beyond the phase-wrapping limit

Sales, Morten ; Shinohara, Takenao ; Sørensen, Michael Korning ; Knudsen, Erik B. ; Tremsin, Anton ; Strobl, Markus ; Schmidt, Søren
in: Journal of physics d-applied physics, vol: 52, issue: 20

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2019     |    DOI: https://doi.org/10.1088/1361-6463/ab0aba

2018
 

Molecular (and lattice) dynamics to analyze neutron scattering experiments–MDANSE2018

Mukhopadhyay, Sanghamitra ; Farhi, Emmanuel ; González, Miguel A. ; Willendrup, Peter Kjær ; Knudsen, Erik B. ; Holm Rod, Thomas ; Petit, Sylvain ; Fernandez-Alonso, Felix ; Taylor, John
in: Neutron News, vol: 29, issue: 3-4, pages: 10-12

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.1080/10448632.2018.1551000

  PDF

Simulation tools for detector and instrument design

Kanaki, Kalliopi ; Kittelmann, Thomas ; Cai, Xiao Xiao ; Klinkby, Esben Bryndt ; Knudsen, Erik B. ; Willendrup, Peter Kjær ; Hall-Wilton, Richard
in: Physica B: Condensed Matter, vol: 551, pages: 386-389

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.1016/j.physb.2018.03.025

  PDF

Simulation tools for scattering corrections in spectrally resolved X-ray Computed Tomography using McXtrace

Busi, Matteo ; Olsen, Ulrik L. ; Knudsen, Erik B. ; Frisvad, Jeppe R. ; Kehres, Jan ; Dreier, Erik S.
in: Optical Engineering, vol: 57, issue: 3

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.1117/1.OE.57.3.037105

2017
  PDF

Monte Carlo Particle Lists: MCPL

Kittelmann, Thomas ; Klinkby, Esben Bryndt ; Bergbäck Knudsen, Erik ; Willendrup, Peter Kjær ; Cai, Xiao Xiao ; Kanaki, Kalliopi
in: Computer Physics Communications, vol: 218, pages: 17-42

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2017     |    DOI: https://doi.org/10.1016/j.cpc.2017.04.012

  PDF

Time-of-Flight Three Dimensional Neutron Diffraction in Transmission Mode for Mapping Crystal Grain Structures

Cereser, Alberto ; Strobl, Markus ; Hall, Stephen A. ; Steuwer, Axel ; Kiyanagi, Ryoji ; Tremsin, Anton S. ; Bergbäck Knudsen, Erik ; Shinohara, Takenao ; Willendrup, Peter Kjær ; Bastos da Silva Fanta, Alice ; Iyengar, Srinivasan ; Larsen, Peter Mahler ; Hanashima, Takayasu ; Moyoshi, Taketo ; Kadletz, Peter M ; Krooß, Philipp ; Niendorf, Thomas ; Sales, Morten ; Schmahl, Wolfgang W. ; Schmidt, Søren
in: Scientific Reports, vol: 7, issue: 1

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2017     |    DOI: https://doi.org/10.1038/s41598-017-09717-w

  PDF

Zero-order filter for diffractive focusing of de Broglie matter waves

Eder, S. D. ; Ravn, A. K. ; Samelin, B. ; Bracco, G. ; Salvador Palau, A. ; Reisinger, T. ; Bergbäck Knudsen, Erik
in: Physical Review A, vol: 95

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2017     |    DOI: https://doi.org/10.1103/PhysRevA.95.023618

2015
 

Prediction of beam hardening artefacts in computed tomography using Monte Carlo simulations

Thomsen, M. ; Bergbäck Knudsen, Erik ; Willendrup, Peter Kjær ; Bech, M. ; Willner, M. ; Pfeiffer, F. ; Poulsen, M. ; Lefmann, K. ; Feidenhans'l, R.
in: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, vol: 342, pages: 314-320

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2015     |    DOI: https://doi.org/10.1016/j.nimb.2014.10.015

 

Simulation of waviness in neutron guides

Hansen, Ursula Bengaard ; Bertelsen, Mads ; Bergbäck Knudsen, Erik ; Lefmann, Kim
in: Journal of Neutron Research, vol: 18, issue: 2-3, pages: 45-59

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2015     |    DOI: https://doi.org/10.3233/JNR-150023

2014
  PDF

Application of the MCNPX-McStas interface for shielding calculations and guide design at ESS

Klinkby, Esben Bryndt ; Bergbäck Knudsen, Erik ; Willendrup, Peter Kjær ; Lauritzen, Bent ; Nonbøl, Erik ; Bentley, P. ; Filges, U.
in: Journal of Physics: Conference Series (Online), vol: 528, pages: 012032
Presented at:
International Workshop on Neutron Optics and Detectors

Type: Conference article (Peer reviewed)

Status: Published     |    Year: 2014     |    DOI: https://doi.org/10.1088/1742-6596/528/1/012032

 

Investigation of propagation algorithms for ray-tracing simulation of polarized neutrons

Bergbäck Knudsen, Erik ; Tranum-Rømer, A. ; Willendrup, Peter Kjær ; Christiansen, P. ; Lefmann, Kim
in: Journal of Neutron Research, vol: 17, issue: 1, pages: 27-34

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2014     |    DOI: https://doi.org/10.3233/JNR-130003

 

McStas

Willendrup, Peter Kjær ; Farhi, Emmanuel ; Bergbäck Knudsen, Erik ; Filges, U. ; Lefmann, Kim
in: Journal of Neutron Research, vol: 17, issue: 1, pages: 35-43

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2014     |    DOI: https://doi.org/10.3233/JNR-130004

  PDF

McStas event logger

Bergbäck Knudsen, Erik ; Willendrup, Peter Kjær ; Klinkby, Esben Bryndt
in: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol: 738, pages: 20-24

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2014     |    DOI: https://doi.org/10.1016/j.nima.2013.11.071

  PDF

New developments in the McStas neutron instrument simulation package

Willendrup, Peter Kjær ; Bergbäck Knudsen, Erik ; Klinkby, Esben Bryndt ; Nielsen, T. ; Farhi, E. ; Filges, U. ; Lefmann, K.
in: Journal of Physics: Conference Series (Online), vol: 528, pages: 012035
Presented at:
International Workshop on Neutron Optics and Detectors

Type: Conference article (Peer reviewed)

Status: Published     |    Year: 2014     |    DOI: https://doi.org/10.1088/1742-6596/528/1/012035

2013
  PDF

FabIO

Bergbäck Knudsen, Erik ; Sørensen, Henning O. ; Wright, Jonathan P. ; Goret, Gaël ; Kieffer, Jérôme
in: Journal of Applied Crystallography, vol: 46, issue: 2, pages: 537-539

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2013     |    DOI: https://doi.org/10.1107/S0021889813000150

 

McXtrace

Bergbäck Knudsen, Erik ; Prodi, Andrea ; Baltser, Jana ; Thomsen, Maria ; Willendrup, Peter Kjær ; Sanchez Del Rio, Manuel ; Ferrero, Claudio ; Farhi, Emmanuel ; Haldrup, Martin Kristoffer ; Vickery, Anette ; Feidenhans'l, Robert ; Mortensen, Kell ; Nielsen, Martin Meedom ; Poulsen, Henning Friis ; Schmidt, Søren ; Lefmann, Kim
in: Journal of Applied Crystallography, vol: 46, issue: 3, pages: 679-696

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2013     |    DOI: https://doi.org/10.1107/S0021889813007991

 

Simulation of a suite of generic long-pulse neutron instruments to optimize the time structure of the European Spallation Source

Lefmann, Kim ; Klenø, Kaspar H. ; Birk, Jonas Okkels ; Hansen, Britt Rosendahl ; Holm, Sonja L. ; Bergbäck Knudsen, Erik ; Lieutenant, Klaus ; von Moos, Lars ; Sales, Morten ; Willendrup, Peter Kjær ; Andersen, Ken H.
in: Review of Scientific Instruments, vol: 84, issue: 5

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2013     |    DOI: https://doi.org/10.1063/1.4803167

2011
 

Advanced simulations of x-ray beam propagation through CRL transfocators using ray-tracing and wavefront propagation methods

Baltser, Jana ; Bergbäck Knudsen, Erik ; Vickery, Anette ; Chubar, Oleg ; Snigirev, Anatoly ; Vaughan, Gavin ; Feidenhans'l, Robert ; Lefmann, Kim
in: Proceedings of SPIE--the international society for optical engineering, vol: 8141, issue: 1, pages: 814111-8
Presented at:
Advances in Computational Methods for X-Ray Optics II

Type: Conference article (Peer reviewed)

Status: Published     |    Year: 2011     |    DOI: https://doi.org/10.1117/12.893343

 

A Monte Carlo approach for simulating the propagation of partially coherent x-ray beams

Prodi, A. ; Bergbäck Knudsen, Erik ; Willendrup, Peter Kjær ; Schmidt, Søren ; Ferrero, C. ; Feidenhans'l, Robert ; Lefmann, Kim
in: Proceedings of SPIE--the international society for optical engineering, vol: 8141, issue: 1, pages: 814108
Presented at:
Advances in Computational Methods for X-Ray Optics II

Type: Conference article (Peer reviewed)

Status: Published     |    Year: 2011     |    DOI: https://doi.org/10.1117/12.894520

 

Analysing neutron scattering data using McStas virtual experiments

Udby, L. ; Willendrup, Peter Kjær ; Bergbäck Knudsen, Erik ; Niedermayer, Ch. ; Filges, U. ; Christensen, Niels Bech ; Farhi, E. ; Wells, B.O. ; Lefmann, Kim
in: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol: 634, issue: Suppl. 1, pages: S138-S143

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2011     |    DOI: https://doi.org/10.1016/j.nima.2010.06.235

 

Eliminating line of sight in elliptic guides using gravitational curving

Klenø, Kaspar H. ; Willendrup, Peter Kjær ; Bergbäck Knudsen, Erik ; Lefmann, Kim
in: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol: 634, issue: Suppl. 1, pages: S100-S103

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2011     |    DOI: https://doi.org/10.1016/j.nima.2010.06.261

 

McStas-model of the delft SESANS

Knudsen, Erik ; Udby, L. ; Willendrup, Peter Kjær ; Lefmann, Kim ; Bouwman, W.G.
in: Physica B: Condensed Matter, vol: 406, issue: 12, pages: 2361-2364

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2011     |    DOI: https://doi.org/10.1016/j.physb.2010.11.060

 

McXtrace: A modern ray-tracing package for X-ray instrumentation

Bergbäck Knudsen, Erik ; Prodi, A. ; Willendrup, Peter Kjær ; Lefmann, Kim ; Baltser, J. ; Gundlach, C. ; Del Rio, M. S. ; Ferrero, C. ; Feidenhans'l, Robert
in: Proceedings of SPIE--the international society for optical engineering, vol: 8141, issue: 1, pages: 81410G
Presented at:
Advances in Computational Methods for X-Ray Optics II

Type: Conference article (Peer reviewed)

Status: Published     |    Year: 2011     |    DOI: https://doi.org/10.1117/12.894179

 

Using McStas for modelling complex optics, using simple building bricks

Willendrup, Peter Kjær ; Udby, Linda ; Bergbäck Knudsen, Erik ; Farhi, Emmanuel ; Lefmann, Kim
in: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol: 634, issue: Suppl. 1, pages: S150-S155

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2011     |    DOI: https://doi.org/10.1016/j.nima.2010.06.212

2010
 

DART: a robust algorithm for fast reconstruction of three-dimensional grain maps

Batenburg, K.J. ; Sijbers, J. ; Poulsen, Henning Friis ; Bergbäck Knudsen, Erik
in: Journal of Applied Crystallography, vol: 43, issue: Part 6, pages: 1464-1473

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2010     |    DOI: https://doi.org/10.1107/S0021889810034114

2009
 

A greedy method for reconstructing polycrystals from three-dimensional X-ray diffraction data

Kulshreshth, Arun Kumar ; Alpers, Andreas ; Herman, Gabor T. ; Knudsen, Erik ; Rodek, Lajos ; Poulsen, Henning Friis
in: Inverse Problems and Imaging, vol: 3, issue: 1, pages: 69-85

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2009     |    DOI: https://doi.org/10.3934/ipi.2009.3.69

2008
 

Virtual experiments: the ultimate aim of neutron ray-tracing simulations

Lefmann, Kim ; Willendrup, Peter Kjær ; Udby, Linda ; Lebech, Bente ; Mortensen, K. ; Birk, Jonas Okkels ; Klenø, Kaspar Hewitt ; Bergbäck Knudsen, Erik ; Christiansen, P. ; Saroun, J. ; Kulda, J. ; Filges, U. ; Konnecke, M. ; Tregenna-Piggott, P. ; Peters, J. ; Lieutenant, K. ; Zsigmond, G. ; Bentley, P. ; Farhi, E.
in: Journal of Neutron Research, vol: 16, issue: 4-4, pages: 97

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2008     |    DOI: https://doi.org/10.1080/10238160902819684

2007
 

A stochastic algorithm for reconstruction of grain maps of moderately deformed specimens based on X-ray diffraction

Rodek, L. ; Poulsen, Henning Friis ; Knudsen, Erik ; Herman, G.T.
in: Journal of Applied Crystallography, vol: 40, issue: 2, pages: 313-321

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2007     |    DOI: https://doi.org/10.1107/S0021889807001288

 

Mapping partially recrystallised structures by 3DXRD

West, Stine ; Winther, Grethe ; Margulies, Lawrence ; Bergbäck Knudsen, Erik ; Sørensen, Henning Osholm ; Schmidt, Søren ; Juul Jensen, Dorte
in: Materials Science Forum, vol: 558-559, pages: 389-394
Presented at:
3rd International Conference on Recrystallization and Grain Growth

Type: Conference article (Peer reviewed)

Status: Published     |    Year: 2007     |    DOI: https://doi.org/10.4028/www.scientific.net/MSF.558-559.389

2006
 

Mapping grains and their dynamics in three dimensions

Sørensen, H.O. ; Jakobsen, B. ; Bergbäck Knudsen, Erik ; Lauridsen, E.M. ; Fæster Nielsen, Søren ; Poulsen, H.F. ; Schmidt, Søren ; Winther, G. ; Margulies, L.
in: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, vol: 246, pages: 232-237
Presented at:
E-MRS 2005 Symposium O on Synchrotron Radiation and Materials Science

Type: Conference article (Peer reviewed)

Status: Published     |    Year: 2006     |    DOI: https://doi.org/10.1016/j.nimb.2005.12.046

 

Optimized algebraic reconstruction technique for generation of grain maps based on three-dimensional x-ray diffraction (3DXRD)

Fu, X. ; Bergbäck Knudsen, Erik ; Poulsen, H.F. ; Herman, G.T. ; Carvalho, B.M. ; Liao, H.Y.
in: Opt. Eng., vol: 45, pages: 116501 (9 pages)

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2006     |    DOI: https://doi.org/10.1117/1.2390680

2004
 

Modelling photonic crystal fibers with localized functions

Knudsen, Erik
in: Optical and Fiber Communication Reports, vol: 1, issue: 3, pages: 218-234

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2004     |    DOI: https://doi.org/10.1007/s10297-004-0020-2

2002
 

Cut-off properties of index-guiding photonic crystal fibres

Riishede, Jesper ; Sørensen, Niels Thorkild ; Libori, Stig Eigil Barkou ; Knudsen, Erik ; Broeng, Jes ; Bjarklev, Anders Overgaard
in: D O P S - Nyt, vol: 17, issue: 1, pages: 33-36

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2002

 

Single mode waveguidance in photonic crystal fibres: criteria for a well-confined mode

Frandsen, Lars Hagedorn ; Søndergaard, Thomas ; Bjarklev, Anders Overgaard ; Lægsgaard, Jesper ; Knudsen, Erik
in: DOPS-Nyt, vol: 17, issue: 3, pages: 16-20

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2002

 

Spectral macro-bending loss considerations on photonic crystal fibres

Sørensen, Niels Thorkild ; Broeng, Jes ; Bjarklev, Anders Overgaard ; Hansen, Theis Peter ; Knudsen, Erik ; Libori, Stig E. Barkou ; Simonsen, Harald R. ; Jensen, J.R.
in: IEE Proceedings - Optoelectronics, vol: 149, issue: 5-6, pages: 206-210

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2002

2001
  PDF

Highly birefringent index-guiding photonic crystal fibers

Hansen, Theis Peter ; Broeng, Jes ; Libori, Stig E. Barkou ; Knudsen, Erik ; Bjarklev, Anders Overgaard ; Jensen, Jacob Riis ; Simonsen, Harald R.
in: I E E E Photonics Technology Letters, vol: 13, issue: 6, pages: 588-590

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2001     |    DOI: https://doi.org/10.1109/68.924030

 

Macro-bending loss properties of photonic crystal fibre

Sørensen, Niels Thorkild ; Broeng, Jes ; Bjarklev, Anders Overgaard ; Knudsen, Erik ; Libori, Stig E. Barkou
in: Electronics Letters, vol: 37, issue: 5, pages: 287-289

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2001

2000
 

Review paper: Crystal fibre technology

Broeng, Jes ; Libori, Stig E. Barkou ; Bjarklev, Anders Overgaard ; Søndergaard, Thomas ; Knudsen, Erik
in: DOPS-Nyt, vol: 2, issue: 2, pages: 22-28

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2000