Magic-PASTIS for XYZ polarization analysis using SEOP polarized $^{3}$He gas

Babcock, Earl; Pistel, Patrick; Ioffe, Alexander; Simeoni, Giovanna; Salhi, Zahir

doi:10.1088/1742-6596/528/1/012018

Contribution to a conference proceedings/Journal Article

FZJ-2015-01803

Magic-PASTIS for XYZ polarization analysis using SEOP polarized $^{3}$He gas

Babcock, E. (Corresponding Author)FZJ* ; Salhi, Z.FZJ* ; Pistel, P.FZJ* ; Ioffe, A.FZJ* ; Simeoni, G.

2014
IOP Publ. Bristol

Neutron optics and detectors, Ismaning, Germany, 2 Jul 2014 - 5 Jul 2014 Journal of physics / Conference Series 528, 012018 (2014) [10.1088/1742-6596/528/1/012018]

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Please use a persistent id in citations: http://hdl.handle.net/2128/8584 doi:10.1088/1742-6596/528/1/012018

Abstract: We present progress towards a complete system for neutron polarization analysis on a time-of-flight (TOF) neutron spectrometer with a large area/angle detector array. Finite element calculations have been used to model the field gradients of a newly proposed PASTIS coil set, which uses a wide-angle banana shaped 3He Neutron Spin Filter cell (NSF) to cover a large neutron scattering solid angle. The final goal of this insert is to enable X-Y-Z polarization analysis to be installed on the future hot/thermal time-of flight spectrometers, although the method is also applicable to thermal/cold spectrometers as well. The components of this system, such as the magnetic field coils and design are applicable to neutron spectroscopy with wide angle detector arrays in general, and the 3He wide angle cell developments for polarized inelastic neutron scattering are independent from the methods used to polarize the gas as well.

Keyword(s): Instrument and Method Development (1st) ; Nano Science and Technology (1st) ; Others (1st) ; Instrument and Method Development (2nd) ; Magnetism (2nd) ; Materials Science (2nd)