Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Peter Kjær Willendrup"'
Autor:
Kim Lefmann, Peter Kjær Willendrup
Publikováno v:
Willendrup, P K & Lefmann, K 2021, ' McStas (ii) : An overview of components, their use, and advice for user contributions ', Journal of Neutron Research, vol. 23, no. 1, pp. 7-27 . https://doi.org/10.3233/JNR-200186
A key element of the success of McStas is the component layer where users and developers alike are contributing to the description of new physical models and features. In McStas, components realise all physical elements of the simulated instrument fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9bea2d3d8c5346829faaefb261b26c8f
https://curis.ku.dk/portal/da/publications/mcstas-ii(f97682c7-c950-4987-86f3-a006f1d0e023).html
https://curis.ku.dk/portal/da/publications/mcstas-ii(f97682c7-c950-4987-86f3-a006f1d0e023).html
Publikováno v:
Bouwman, W G, Knudsen, E B, Udby, L & Willendrup, P 2021, ' Simulations of foil-based spin-echo (modulated) small-angle neutron scattering with a sample using McStas ', Journal of Applied Crystallography, vol. 54, pp. 195-202 . https://doi.org/10.1107/S1600576720015496
Journal of Applied Crystallography
Journal of Applied Crystallography, 54
Bouwman, W G, Knudsen, E B, Udby, L & Willendrup, P K 2021, ' Simulations of foil-based spin-echo (modulated) small-angle neutron scattering with a sample using McStas ', Journal of Applied Crystallography, vol. 54, no. Pt 1, pp. 195-202 . https://doi.org/10.1107/S1600576720015496
Journal of Applied Crystallography
Journal of Applied Crystallography, 54
Bouwman, W G, Knudsen, E B, Udby, L & Willendrup, P K 2021, ' Simulations of foil-based spin-echo (modulated) small-angle neutron scattering with a sample using McStas ', Journal of Applied Crystallography, vol. 54, no. Pt 1, pp. 195-202 . https://doi.org/10.1107/S1600576720015496
Simulations of a foil-based spin-echo small-angle neutron scattering instrument are performed and agree with analytical calculations. The simulation tools for polarization manipulation can be used to optimally design new spin-echo instruments.
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Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd88d52478e2c849702ecdc11882b403
https://curis.ku.dk/ws/files/306973327/ge5085.pdf
https://curis.ku.dk/ws/files/306973327/ge5085.pdf
Publikováno v:
Knudsen, E B, Willendrup, P K, Garde, J & Bertelsen, M 2020, McXtrace anno 2020-Complex sample geometries and GPU acceleration . in Advances in Computational Methods for X-Ray Optics V . vol. 11493, SPIE-International Society for Optical Engineering, Proceedings of SPIE-The International Society for Optical Engineering, SPIE Optical Engineering + Applications 2020, San Diego, California, United States, 24/08/2020 . https://doi.org/10.1117/12.2568753
We present two main developments within the ray tracing package McXtrace in the recent timespan; The Union concept for building complex sample geometries which may also include sample environments, and the next generation code generator (nicknamed 3.
Autor:
Kim Lefmann, Peter Kjær Willendrup
Publikováno v:
Willendrup, P K & Lefmann, K 2020, ' McStas (i): Introduction, use, and basic principles for ray-tracing simulations ', Journal of Neutron Research, vol. 22, no. 1, pp. 1-16 . https://doi.org/10.3233/JNR-190108
We present an overview of, and an introduction to, the general-purpose neutron simulation package McStas. We present the basic principles behind Monte Carlo ray-tracing simulations of neutrons performed in the package and present a few simple example
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::733b8c926c766e30785675529a4a5028
https://orbit.dtu.dk/en/publications/e067e190-344c-4842-869b-50332aa907ba
https://orbit.dtu.dk/en/publications/e067e190-344c-4842-869b-50332aa907ba
Autor:
Erik Knudsen, Peter Kjær Willendrup, Peter L. Henriksen, Arne S. Jegers, Desiree Della Monica Ferreira, Sara Svendsen
Publikováno v:
Knudsen, E B, Svendsen, S, Henriksen, P L, Jegers, A S, Willendrup, P K & Ferreira, D D M 2020, Example telescope simulations with the AstroX telescope toolbox for McXtrace . in J-W A. den Herder, S Nikzad & K Nakazawa (eds), Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray . vol. 11444, 114443Q, SPIE-International Society for Optical Engineering, Proceedings of SPIE-The International Society for Optical Engineering, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 14/12/2020 . https://doi.org/10.1117/12.2561372
We present a number of example studies of telescope optics using the latest version of the AstroX add on toolbox for McXtrace. Among which are first, a benchmark study of effective area and vignetting for the Chandra X-ray Observatory which we find t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62d328b54fac52ca285defa1e6113e89
https://orbit.dtu.dk/en/publications/f932bd41-14d9-4cb9-b8e5-94afd8adaa86
https://orbit.dtu.dk/en/publications/f932bd41-14d9-4cb9-b8e5-94afd8adaa86
Publikováno v:
Journal of Neutron Research. 18:79-92
McStas and Mantid are two well established software frameworks within the neutron scattering community. McStas has been primarily used for simulating the neutron transport of instruments, while Mantid has been primarily used for data reduction. We re
Autor:
Kalliopi Kanaki, Xiao Xiao Cai, E. B. Klinkby, Erik Knudsen, Peter Kjær Willendrup, Thomas Kittelmann
Publikováno v:
Sygma
arXiv.org e-Print Archive
Computer Physics Communications
Kittelmann, T, Klinkby, E B, Bergbäck Knudsen, E, Willendrup, P K, Cai, X X & Kanaki, K 2017, ' Monte Carlo Particle Lists: MCPL ', Computer Physics Communications, vol. 218, pp. 17-42 . https://doi.org/10.1016/j.cpc.2017.04.012
arXiv.org e-Print Archive
Computer Physics Communications
Kittelmann, T, Klinkby, E B, Bergbäck Knudsen, E, Willendrup, P K, Cai, X X & Kanaki, K 2017, ' Monte Carlo Particle Lists: MCPL ', Computer Physics Communications, vol. 218, pp. 17-42 . https://doi.org/10.1016/j.cpc.2017.04.012
A binary format with lists of particle state information, for interchanging particles between various Monte Carlo simulation applications, is presented. Portable C code for file manipulation is made available to the scientific community, along with c
Autor:
Erik Knudsen, E. B. Klinkby, Xiao Xiao Cai, Peter Kjær Willendrup, Kalliopi Kanaki, Thomas Kittelmann, Richard Hall-Wilton
Publikováno v:
Physica B: Condensed Matter
Kanaki, K, Kittelmann, T, Cai, X X, Klinkby, E B, Knudsen, E B, Willendrup, P K & Hall-Wilton, R 2018, ' Simulation tools for detector and instrument design ', Physica B: Condensed Matter, vol. 551, pp. 386-389 . https://doi.org/10.1016/j.physb.2018.03.025
Kanaki, K, Kittelmann, T, Cai, X X, Klinkby, E B, Knudsen, E B, Willendrup, P K & Hall-Wilton, R 2018, ' Simulation tools for detector and instrument design ', Physica B: Condensed Matter, vol. 551, pp. 386-389 . https://doi.org/10.1016/j.physb.2018.03.025
The high performance requirements at the European Spallation Source have been driving the technological advances on the neutron detector front. Now more than ever is it important to optimize the design of detectors and instruments, to fully exploit t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::749bc1193c8721f9a2c96ceeb3723bad
http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-33390
http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-33390
Autor:
Robert Feidenhans'l, Peter Kjær Willendrup, Erik Knudsen, Mette Poulsen, Maria Thomsen, Franz Pfeiffer, Kim Lefmann, Marian Willner, Martin Bech
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 342:314-320
We show how radiological images of both single and multi material samples can be simulated using the Monte Carlo simulation tool McXtrace and how these images can be used to make a three dimensional reconstruction. Good numerical agreement between th
Autor:
L. Zanini, E. B. Klinkby, Troels Schönfeldt, Bent Lauritzen, Eric Pitcher, A. Takibayev, G. Muhrer, Ferenc Mezei, Konstantin Batkov, Peter Kjær Willendrup
Publikováno v:
Schönfeldt, T, Batkov, K, Klinkby, E B, Lauritzen, B, Mezei, F, Muhrer, G, Pitcher, E, Takibayev, A, Willendrup, P K & Zanini, L 2015, ' Broad spectrum moderators and advanced reflector filters using 208 Pb ', Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 769, pp. 1-4 . https://doi.org/10.1016/j.nima.2014.09.048
Cold and thermal neutrons used in neutrons scattering experiments are produced in nuclear reactors and spallation sources. The neutrons are cooled to thermal or cold temperatures in thermal and cold moderators, respectively. The present study shows t