Double-focusing thermal triple-axis spectrometer at the NCNR

J. W. Lynn; Y. Chen; S. Chang; Y. Zhao; S. Chi; W. Ratcliff; B. G. Ueland; R. W. Erwin

Double-focusing thermal triple-axis spectrometer at the NCNR

J. W. Lynn, Y. Chen, S. Chang, Y. Zhao, S. Chi, W. Ratcliff, B. G. Ueland, R. W. Erwin

Research output: Contribution to journal › Article › peer-review

108 Scopus citations

Abstract

The new thermal triple-axis spectrometer at the NIST Center for Neutron Research (NCNR) is located at the BT-7 beam port. The 165 mm diameter reactor beam is equipped with a selection of Söller collimators, beam-limiters, and a pyrolytic graphite (PG) filter to tailor the beam for the dual 20×20 cm² double-focusing monochromator system that provides monochromatic fluxes exceeding 10⁸ n/cm²/s onto the sample. The two monochromators installed are PG(002) and Cu(220), which provide incident energies from 5 meV to above 500 meV. The computer controlled analyzer system offers six standard modes of operation, including a diffraction detector, a position-sensitive detector (PSD) in diffraction mode, horizontal energy focusing analyzer with detector, a Q-E mode employing a flat analyzer and PSD, a constant-E mode with the analyzer crystal system and PSD, and a conventional mode with a selection of Söller collimators and detector. Additional configurations for specific measurement needs are also available. This paper discusses the capabilities and performance for this new state-of-the-art neutron spectrometer.

Original language	English
Pages (from-to)	61-79
Number of pages	19
Journal	Journal of Research of the National Institute of Standards and Technology
Volume	117
Issue number	1
State	Published - 2012
Externally published	Yes

Keywords

Inelastic neutron scattering
Neutron diffraction
Polarized neutrons
Position sensitive detector
Thermal neutron tripleaxis spectrometer

Cite this

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title = "Double-focusing thermal triple-axis spectrometer at the NCNR",

abstract = "The new thermal triple-axis spectrometer at the NIST Center for Neutron Research (NCNR) is located at the BT-7 beam port. The 165 mm diameter reactor beam is equipped with a selection of S{\"o}ller collimators, beam-limiters, and a pyrolytic graphite (PG) filter to tailor the beam for the dual 20×20 cm2 double-focusing monochromator system that provides monochromatic fluxes exceeding 108 n/cm2/s onto the sample. The two monochromators installed are PG(002) and Cu(220), which provide incident energies from 5 meV to above 500 meV. The computer controlled analyzer system offers six standard modes of operation, including a diffraction detector, a position-sensitive detector (PSD) in diffraction mode, horizontal energy focusing analyzer with detector, a Q-E mode employing a flat analyzer and PSD, a constant-E mode with the analyzer crystal system and PSD, and a conventional mode with a selection of S{\"o}ller collimators and detector. Additional configurations for specific measurement needs are also available. This paper discusses the capabilities and performance for this new state-of-the-art neutron spectrometer.",

keywords = "Inelastic neutron scattering, Neutron diffraction, Polarized neutrons, Position sensitive detector, Thermal neutron tripleaxis spectrometer",

author = "Lynn, {J. W.} and Y. Chen and S. Chang and Y. Zhao and S. Chi and W. Ratcliff and Ueland, {B. G.} and Erwin, {R. W.}",

year = "2012",

language = "English",

volume = "117",

pages = "61--79",

journal = "Journal of Research of the National Institute of Standards and Technology",

issn = "2165-7254",

number = "1",

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TY - JOUR

T1 - Double-focusing thermal triple-axis spectrometer at the NCNR

AU - Lynn, J. W.

AU - Chen, Y.

AU - Chang, S.

AU - Zhao, Y.

AU - Chi, S.

AU - Ratcliff, W.

AU - Ueland, B. G.

AU - Erwin, R. W.

PY - 2012

Y1 - 2012

N2 - The new thermal triple-axis spectrometer at the NIST Center for Neutron Research (NCNR) is located at the BT-7 beam port. The 165 mm diameter reactor beam is equipped with a selection of Söller collimators, beam-limiters, and a pyrolytic graphite (PG) filter to tailor the beam for the dual 20×20 cm2 double-focusing monochromator system that provides monochromatic fluxes exceeding 108 n/cm2/s onto the sample. The two monochromators installed are PG(002) and Cu(220), which provide incident energies from 5 meV to above 500 meV. The computer controlled analyzer system offers six standard modes of operation, including a diffraction detector, a position-sensitive detector (PSD) in diffraction mode, horizontal energy focusing analyzer with detector, a Q-E mode employing a flat analyzer and PSD, a constant-E mode with the analyzer crystal system and PSD, and a conventional mode with a selection of Söller collimators and detector. Additional configurations for specific measurement needs are also available. This paper discusses the capabilities and performance for this new state-of-the-art neutron spectrometer.

AB - The new thermal triple-axis spectrometer at the NIST Center for Neutron Research (NCNR) is located at the BT-7 beam port. The 165 mm diameter reactor beam is equipped with a selection of Söller collimators, beam-limiters, and a pyrolytic graphite (PG) filter to tailor the beam for the dual 20×20 cm2 double-focusing monochromator system that provides monochromatic fluxes exceeding 108 n/cm2/s onto the sample. The two monochromators installed are PG(002) and Cu(220), which provide incident energies from 5 meV to above 500 meV. The computer controlled analyzer system offers six standard modes of operation, including a diffraction detector, a position-sensitive detector (PSD) in diffraction mode, horizontal energy focusing analyzer with detector, a Q-E mode employing a flat analyzer and PSD, a constant-E mode with the analyzer crystal system and PSD, and a conventional mode with a selection of Söller collimators and detector. Additional configurations for specific measurement needs are also available. This paper discusses the capabilities and performance for this new state-of-the-art neutron spectrometer.

KW - Inelastic neutron scattering

KW - Neutron diffraction

KW - Polarized neutrons

KW - Position sensitive detector

KW - Thermal neutron tripleaxis spectrometer

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M3 - Article

AN - SCOPUS:84859256441

SN - 2165-7254

VL - 117

SP - 61

EP - 79

JO - Journal of Research of the National Institute of Standards and Technology

JF - Journal of Research of the National Institute of Standards and Technology

IS - 1

ER -

Double-focusing thermal triple-axis spectrometer at the NCNR

Abstract

Keywords

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