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000866616 005__ 20210130003543.0
000866616 037__ $$aFZJ-2019-05697
000866616 1001_ $$0P:(DE-Juel1)172014$$aBarnsley, Lester$$b0$$eCorresponding author$$ufzj
000866616 1112_ $$a64th Annual Conference on Magnetism and Magnetic Materials$$cLas Vegas$$d2019-11-04 - 2019-11-08$$wUnited States
000866616 245__ $$aPolarization analysis on the small-angle neutron scattering diffractometer KWS-1: A faster, more versatile instrument
000866616 260__ $$c2019
000866616 3367_ $$033$$2EndNote$$aConference Paper
000866616 3367_ $$2BibTeX$$aINPROCEEDINGS
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000866616 520__ $$aA number of upgrades have been made to the KWS-1 small-angle neutron scattering (SANS) instrument, operated by the Jülich Centre for Neutron Science (JCNS) and located at the research reactor FRM II of the Heinz Maier-Leibnitz Zentrum (MLZ) in Garching, Germany. A neutron flux on the sample of 1×108 cm−2 s−1 makes it one of the most intense SANS instruments in the world, while an optional double-disc chopper can reduce wavelength spread down to Δλ/λ = 1% [1], allowing for high resolution measurements. In this presentation, we will describe two recent upgrades, aimed towards optimization of studies of nanoscale magnetic correlations.  The first is the installation of an upgraded detector. In September 2018, we were able to achieve commissioning of a new detector consisting of an array of 3He tubes interfaced with fast electronics (supplied by GE Reuter Stokes, OH, USA) to minimize dead-time for high-intensity measurements. An increase in the total detected area resulted in a new maximum Q-range of 0.7 Å−1, a 60% improvement over the previous geometry. 3He provides improved discrimination from background events, increasing signal-to-noise, while a faster detector response allows us to increase the source aperture for even shorter measurement times. In-line with our development of KWS-1, particularly for the magnetic SANS community, we report on recent developments for the option of measuring with polarization analysis. An analyser cell with polarized 3He allows detecting all four scattering cross-sections with a Qmax > 0.06 Å−1. The 3He cell is contained inside a μ-metal chamber, designed in-house by our JCNS 3He group, to ensure a high degree of uniformity of the magnetic field at the cell position. In recent experiments, a cell lifetime of more than 90 hours was achieved. The achieved cell lifetime is more than 90 hours. A new option for in-situ polarization of a 3He cell, allowing for time-independent analyzing efficiency of post-scattered neutrons, will be discussed.
000866616 536__ $$0G:(DE-HGF)POF3-524$$a524 - Controlling Collective States (POF3-524)$$cPOF3-524$$fPOF III$$x0
000866616 536__ $$0G:(DE-HGF)POF3-6212$$a6212 - Quantum Condensed Matter: Magnetism, Superconductivity (POF3-621)$$cPOF3-621$$fPOF III$$x1
000866616 536__ $$0G:(DE-HGF)POF3-6G15$$a6G15 - FRM II / MLZ (POF3-6G15)$$cPOF3-6G15$$fPOF III$$x2
000866616 536__ $$0G:(DE-HGF)POF3-6G4$$a6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)$$cPOF3-623$$fPOF III$$x3
000866616 65027 $$0V:(DE-MLZ)SciArea-170$$2V:(DE-HGF)$$aMagnetism$$x0
000866616 65017 $$0V:(DE-MLZ)GC-1604-2016$$2V:(DE-HGF)$$aMagnetic Materials$$x0
000866616 693__ $$0EXP:(DE-MLZ)KWS1-20140101$$1EXP:(DE-MLZ)FRMII-20140101$$5EXP:(DE-MLZ)KWS1-20140101$$6EXP:(DE-MLZ)NL3b-20140101$$aForschungs-Neutronenquelle Heinz Maier-Leibnitz $$eKWS-1: Small angle scattering diffractometer$$fNL3b$$x0
000866616 7001_ $$0P:(DE-Juel1)144382$$aFeoktystov, Artem$$b1$$ufzj
000866616 7001_ $$0P:(DE-Juel1)130516$$aBabcock, Earl$$b2$$ufzj
000866616 7001_ $$0P:(DE-Juel1)144963$$aSalhi, Zahir$$b3$$ufzj
000866616 7001_ $$0P:(DE-Juel1)130646$$aFrielinghaus, Henrich$$b4$$ufzj
000866616 909CO $$ooai:juser.fz-juelich.de:866616$$pVDB$$pVDB:MLZ
000866616 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)172014$$aForschungszentrum Jülich$$b0$$kFZJ
000866616 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)144382$$aForschungszentrum Jülich$$b1$$kFZJ
000866616 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130516$$aForschungszentrum Jülich$$b2$$kFZJ
000866616 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)144963$$aForschungszentrum Jülich$$b3$$kFZJ
000866616 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130646$$aForschungszentrum Jülich$$b4$$kFZJ
000866616 9131_ $$0G:(DE-HGF)POF3-524$$1G:(DE-HGF)POF3-520$$2G:(DE-HGF)POF3-500$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bKey Technologies$$lFuture Information Technology - Fundamentals, Novel Concepts and Energy Efficiency (FIT)$$vControlling Collective States$$x0
000866616 9131_ $$0G:(DE-HGF)POF3-621$$1G:(DE-HGF)POF3-620$$2G:(DE-HGF)POF3-600$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF3-6212$$aDE-HGF$$bForschungsbereich Materie$$lVon Materie zu Materialien und Leben$$vIn-house research on the structure, dynamics and function of matter$$x1
000866616 9131_ $$0G:(DE-HGF)POF3-6G15$$1G:(DE-HGF)POF3-6G0$$2G:(DE-HGF)POF3-600$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF3-6G15$$aDE-HGF$$bForschungsbereich Materie$$lGroßgeräte: Materie$$vFRM II / MLZ$$x2
000866616 9131_ $$0G:(DE-HGF)POF3-623$$1G:(DE-HGF)POF3-620$$2G:(DE-HGF)POF3-600$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF3-6G4$$aDE-HGF$$bForschungsbereich Materie$$lVon Materie zu Materialien und Leben$$vFacility topic: Neutrons for Research on Condensed Matter$$x3
000866616 9141_ $$y2019
000866616 920__ $$lyes
000866616 9201_ $$0I:(DE-Juel1)JCNS-FRM-II-20110218$$kJCNS-FRM-II$$lJCNS-FRM-II$$x0
000866616 9201_ $$0I:(DE-Juel1)JCNS-1-20110106$$kJCNS-1$$lNeutronenstreuung$$x1
000866616 9201_ $$0I:(DE-Juel1)JCNS-2-20110106$$kJCNS-2$$lStreumethoden$$x2
000866616 9201_ $$0I:(DE-588b)4597118-3$$kMLZ$$lHeinz Maier-Leibnitz Zentrum$$x3
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