Tailoring phase-space in neutron beam extraction
作者： S. Weichselbaumer , G. Brandl , R. Georgii , J. Stahn , T. Panzner
DOI: 10.1016/J.NIMA.2015.05.003
关键词:
摘要: Abstract In view of the trend towards smaller samples and experiments under extreme conditions it is important to deliver small homogeneous neutron beams sample area. For this purpose, elliptic and/or Montel mirrors are ideally suited as phase space neutrons can be defined far away from sample. Therefore, only useful will arrive at position leading a very low background. We demonstrate ease designing transport systems using simple numeric tools, which verified Monte-Carlo simulations that allow taking into account effects gravity finite beam size. It shown significant part brilliance transferred moderator Our results may have serious impact on design instruments spallation sources such European Spallation Source (ESS) in Lund, Sweden.
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sci-hub.se 参考文章(18)
H. Maier-Leibnitz, T. Springer, The use of neutron optical devices on beam-hole experiments on beam-hole experiments Journal of Nuclear Energy. Parts A\/b. Reactor Science and Technology. ,vol. 17, pp. 217- 225 ,(1963) , 10.1016/0368-3230(63)90022-3
Gene E. Ice, Judy W. L. Pang, Chris Tulk, Jamie Molaison, Jae-Young Choi, Cody Vaughn, Lauren Lytle, Peter Z. Takacs, Ken H. Andersen, Terry Bigault, Ali Khounsary, Design Challenges and Performance of Nested Neutron Mirrors for Microfocusing on SNAP Journal of Applied Crystallography. ,vol. 42, pp. 1004- 1008 ,(2009) , 10.1107/S0021889809037595
Peter Böni, High Intensity Neutron Beams for Small Samples Journal of Physics: Conference Series. ,vol. 502, pp. 012047- ,(2014) , 10.1088/1742-6596/502/1/012047
Kaspar Hewitt Klenø, Klaus Lieutenant, Ken H. Andersen, Kim Lefmann, Systematic performance study of common neutron guide geometries Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment. ,vol. 696, pp. 75- 84 ,(2012) , 10.1016/J.NIMA.2012.08.027
Phillip M. Bentley, Shane J. Kennedy, Ken H. Andersen, Damián Martin Rodríguez, David F.R. Mildner, Correction of optical aberrations in elliptic neutron guides Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. ,vol. 693, pp. 268- 275 ,(2012) , 10.1016/J.NIMA.2012.07.002
Kaspar H. Klenø, Peter K. Willendrup, Erik Knudsen, Kim Lefmann, Eliminating line of sight in elliptic guides using gravitational curving Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment. ,vol. 634, pp. 100- 103 ,(2011) , 10.1016/J.NIMA.2010.06.261
C. Zendler, D. Nekrassov, K. Lieutenant, An improved elliptic guide concept for a homogeneous neutron beam without direct line of sight Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment. ,vol. 746, pp. 39- 46 ,(2014) , 10.1016/J.NIMA.2014.01.044
F. Mezei, The raison d'être of long pulse spallation sources Journal of Neutron Research. ,vol. 6, pp. 3- 32 ,(1997) , 10.1080/10238169708200095
Richard M. Ibberson, Design and performance of the new supermirror guide on HRPD at ISIS Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment. ,vol. 600, pp. 47- 49 ,(2009) , 10.1016/J.NIMA.2008.11.066
Christian Schanzer, Peter Böni, Uwe Filges, Thomas Hils, Advanced geometries for ballistic neutron guides Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment. ,vol. 529, pp. 63- 68 ,(2004) , 10.1016/J.NIMA.2004.04.178