The performance of magnetic lens for focusing VCN-SANS

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dc.contributor.authorYamada, Men_AU
dc.contributor.authorIwashita, Yen_AU
dc.contributor.authorKanaya, Ten_AU
dc.contributor.authorIchikawa, Men_AU
dc.contributor.authorTongu, Hen_AU
dc.contributor.authorKennedy, SJen_AU
dc.contributor.authorShimizu, HMen_AU
dc.contributor.authorMishima, Ken_AU
dc.contributor.authorYamada, NLen_AU
dc.contributor.authorHirota, Ken_AU
dc.contributor.authorCarpenter, JMen_AU
dc.contributor.authorLal, Jen_AU
dc.contributor.authorAndersen, KHen_AU
dc.contributor.authorGeltenbort, Pen_AU
dc.contributor.authorGuerard, Ben_AU
dc.contributor.authorManzin, Gen_AU
dc.contributor.authorHino, Men_AU
dc.contributor.authorKitaguchi, Men_AU
dc.contributor.authorBleuel, Men_AU
dc.date.accessioned2011-12-13T22:09:16Zen_AU
dc.date.available2011-12-13T22:09:16Zen_AU
dc.date.issued2011-04-01en_AU
dc.date.statistics2011-12-14en_AU
dc.description.abstractWe have developed a prototype rotating-permanent magnet sextupole lens (named rot-PMSx) for more efficient experiments with neutron beams in time of flight (ToF) mode. This lens can modulate the focusing strength over range 1.5 x 10(4)T/m(2) <= g' <= 5.9 x 10(4) T/m(2). Synchronization between the modulation and the beam pulse produces a focused beam without significant chromatic aberration. We anticipate that this lens could be utilized in focusing small angle neutron scattering (SANS) instruments for novel approach to high resolution SANS. We carried out experiments testing the principle of this lens at the very cold neutron (VCN) beamline (PF2) at Institut Laue-Langevin (ILL), France. The focused beam image size at the detector was kept constant at the same beam size as the source (approximate to 3 mm) over a wavelength range of 30 angstrom <= lambda <= 48 angstrom in focal length of approximate to 1.14m. The flux gain was about 12 relative to a beam without focusing, and the depth of focus was quite large. These results show the good performance of this lens and the system. Thereupon we have demonstrated the performance of this test bed for high resolution focusing of VCN-SANS for a well-studied softmatter sample; a deuterium oxide solution of Pluronic F127, an (PEO)(100)(PPO)(65)(PEO)(100) tri-block copolymer in deuterium oxide. The results of the focusing experiment and the focusing VCN-SANS are presented. (C) 2010 Elsevier B.V. All rights reserved.en_AU
dc.identifier.citationYamada, M., Iwashita, Y., Kanaya, T., Ichikawa, M., Tongu, H., Kennedy, S.J., Shimizu, H.M., Mishima, K., Yamada, N.L., Hirota, K., Carpenter, J.M., Lal, J., Andersen, K., Geltenbort, P., Guerard, B., Manzin, G., Hino, M., Kitaguchi, M., & Bleuel, M. (2011). The performance of magnetic lens for focusing VCN-SANS. Paper presented to the International Workshop on Neutron Optics NOP2010, 17-19 March, Alpe d'Huez, France. In Andersen, K. H., Bentley, P., Bigault, T., Courtois, P., Cubitt, R. (Eds), Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 634(1), S156-S160. doi:10.1016/j.nima.2010.06.259en_AU
dc.identifier.conferenceenddate19 March 2010en_AU
dc.identifier.conferencenameInternational Workshop on Neutron Optics NOP2010en_AU
dc.identifier.conferenceplaceAlpe d'Huez, France.en_AU
dc.identifier.conferencestartdate17 March 2010en_AU
dc.identifier.editorsAndersen, K. H., Bentley, P., Bigault, T., Courtois, P., Cubitt, R.en_AU
dc.identifier.govdoc3822en_AU
dc.identifier.issn0168-9002en_AU
dc.identifier.issue1, Supplementen_AU
dc.identifier.journaltitleNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipmenten_AU
dc.identifier.paginationS156-S160en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.nima.2010.06.259en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/3941en_AU
dc.identifier.volume634en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectSmall angle scatteringen_AU
dc.subjectPulsed neutron techniquesen_AU
dc.subjectDeuteriumen_AU
dc.subjectMagnetic lens spectrometersen_AU
dc.subjectMagnetic fluxen_AU
dc.subjectSynchronizationen_AU
dc.titleThe performance of magnetic lens for focusing VCN-SANSen_AU
dc.typeConference Paperen_AU
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