Towards polarization analysis on a thermal time-of-flight spectrometer

Stride, John A.; Andersen, K.H.; Murani, A.P.; Mutka, H.; Schober, H.; Stewart, J. R.

doi:10.1016/j.physb.2004.10.066

Cited by 5 publications

(4 citation statements)

References 5 publications

(1 reference statement)

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“…On IN5 the polarized option would use the PASTIS concept 18) of three sets of compact perpendicular coils allowing XYZ-PA and a 3 He analyzer banana. Such a development would open up a large field of applications, from biophysical and molecular spectroscopy through functional materials to fundamental magnetism.…”

Section: Polarization Analysismentioning

confidence: 99%

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IN5 Cold Neutron Time-of-Flight Spectrometer, Prepared to Tackle Single Crystal Spectroscopy

Ollivier

Mutka

2011

J. Phys. Soc. Jpn.

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The fully overhauled IN5 was the first cold neutron time-of-flight spectrometer equipped with position sensitive detectors. It has been in scheduled operation since end of 2008. The experience of use has confirmed the expectations in terms of both a qualitative and quantitative efficiency increase, allowing to open new opportunities for time-of-flight spectroscopy. Using the full potential of the position sensitive detectors has brought up an increasing demand for single crystal spectroscopy while the enhanced count-rate and better signal-to-noise allow studying smaller samples or weaker scatterers in the more conventional field of quasi-elastic scattering. Additional effort with sample environment -dedicated magnet and polarization analysis option -are expected to improve further the potential for study of strongly correlated electron systems.

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Section: Polarization Analysismentioning

confidence: 99%

“…The PASTIS type crossed coil geometry 18) appears as the most efficient system when it comes to covering the wide scattering angle of the detector bank.…”

Section: Polarization Analysismentioning

confidence: 99%

IN5 Cold Neutron Time-of-Flight Spectrometer, Prepared to Tackle Single Crystal Spectroscopy

Ollivier

Mutka

2011

J. Phys. Soc. Jpn.

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“…As has been shown above, the crystal monochromator-FC concept is well adapted for a continuous source and therefore it presents an attractive option for inelastic scattering applications using polarized neutrons, forming the basis of the recently started PASTIS project at the ILL, Grenoble [1]. The IN4 instrument at its present location is a potential candidate for implementation of PASTIS and the minor modifications foreseen in view of this are currently under consideration.…”

Section: Conclusion-possible Application To Pastismentioning

confidence: 99%

“…Furthermore we shall indicate how the correct focusing conditions can be used, in association with time-focusing, for a compact spectrometer concept with elevated count-rate in the thermal energy range (10 -50 meV). This concept is very well adapted for the xyzpolarisation analysis method [1] that has recently been demonstrated using thermal neutrons, with polarization analysis provided by a 3 He spin-filter [2].…”

Section: Introductionmentioning

confidence: 99%

The assets of crystal monochromator-Fermi chopper time-of-flight on continuous sources - potential for high efficiency PASTIS operation

Stewart

Andersen

Stride

et al. 2007

GNER

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Crystal monochromator-Fermi-chopper (FC) (X-TOF) instruments provide a high count-rate with flexible resolution optimization. We show that the most advantageous range of operation for this class of instruments falls in the thermal and sub-thermal range where focusing Bragg optics can be used to full benefit. In this spectral window, an X-TOF instrument at a high-flux reactor can match a chopper spectrometer on a MW power short pulse spallation source as can be shown by comparing the optimized concepts. The high count-rate makes this type of instrument highly attractive for polarized neutron operation. Recent experiments performed using a new large solid-angle 3 He neutron spin-filter represent a significant breakthrough in the field of neutron polarization analysis studies on multi-detector spectrometers, forming the basis of the proposed PASTIS project which enables xyz-polarization analysis studies on a thermal TOF spectrometer (Stride et al., Stewart et al.). Outlook for implementation of PASTIS as a thermal X-TOF spectrometer will be discussed.

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PASTIS: An insert for polarization analysis studies on a thermal inelastic spectrometer

Stewart

Andersen

Babcock

et al. 2006

Physica B: Condensed Matter

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Towards polarization analysis on a thermal time-of-flight spectrometer

Cited by 5 publications

References 5 publications

IN5 Cold Neutron Time-of-Flight Spectrometer, Prepared to Tackle Single Crystal Spectroscopy

IN5 Cold Neutron Time-of-Flight Spectrometer, Prepared to Tackle Single Crystal Spectroscopy

The assets of crystal monochromator-Fermi chopper time-of-flight on continuous sources - potential for high efficiency PASTIS operation

PASTIS: An insert for polarization analysis studies on a thermal inelastic spectrometer

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