Double-focusing geometry for phase correction in neutron resonance spin-echo spectroscopy

F. Funama; S. Tasaki; M. Hino; T. Oda; H. Endo

doi:10.1016/j.nima.2021.165480

Double-focusing geometry for phase correction in neutron resonance spin-echo spectroscopy

F. Funama, S. Tasaki, M. Hino, T. Oda, H. Endo

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

3 Scopus citations

Abstract

Neutron spin phase correction is an essential technique for achieving a high energy resolution in neutron spin-echo experiments. We propose a double-focusing geometry in which two identical ellipsoidal mirrors are arranged in series. This arrangement enables us to correct the path length differences for large divergent beams using a complete ellipsoidal focusing mirror. In this study, we evaluated the effectiveness of this geometry both analytically and numerically. A Fourier time of 1 μs is achievable using this geometry.

Original language	English
Article number	165480
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	1010
DOIs	https://doi.org/10.1016/j.nima.2021.165480
State	Published - Sep 11 2021
Externally published	Yes

Funding

One of the authors (F. F) would like to thank H. Yamakawa (Kyoto University) for meaningful discussions. This study was inspired by neutron scattering experiments which were approved by the Neutron Scattering Program Advisory Committee of IMSS, KEK (Proposal No. 2019S07).

Keywords

Ellipsoidal neutron-focusing mirror
Monte Carlo simulation
NRSE
Neutron spectroscopy
Neutron spin echo
Phase correction

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title = "Double-focusing geometry for phase correction in neutron resonance spin-echo spectroscopy",

abstract = "Neutron spin phase correction is an essential technique for achieving a high energy resolution in neutron spin-echo experiments. We propose a double-focusing geometry in which two identical ellipsoidal mirrors are arranged in series. This arrangement enables us to correct the path length differences for large divergent beams using a complete ellipsoidal focusing mirror. In this study, we evaluated the effectiveness of this geometry both analytically and numerically. A Fourier time of 1 μs is achievable using this geometry.",

keywords = "Ellipsoidal neutron-focusing mirror, Monte Carlo simulation, NRSE, Neutron spectroscopy, Neutron spin echo, Phase correction",

author = "F. Funama and S. Tasaki and M. Hino and T. Oda and H. Endo",

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TY - JOUR

T1 - Double-focusing geometry for phase correction in neutron resonance spin-echo spectroscopy

AU - Funama, F.

AU - Tasaki, S.

AU - Hino, M.

AU - Oda, T.

AU - Endo, H.

PY - 2021/9/11

Y1 - 2021/9/11

N2 - Neutron spin phase correction is an essential technique for achieving a high energy resolution in neutron spin-echo experiments. We propose a double-focusing geometry in which two identical ellipsoidal mirrors are arranged in series. This arrangement enables us to correct the path length differences for large divergent beams using a complete ellipsoidal focusing mirror. In this study, we evaluated the effectiveness of this geometry both analytically and numerically. A Fourier time of 1 μs is achievable using this geometry.

AB - Neutron spin phase correction is an essential technique for achieving a high energy resolution in neutron spin-echo experiments. We propose a double-focusing geometry in which two identical ellipsoidal mirrors are arranged in series. This arrangement enables us to correct the path length differences for large divergent beams using a complete ellipsoidal focusing mirror. In this study, we evaluated the effectiveness of this geometry both analytically and numerically. A Fourier time of 1 μs is achievable using this geometry.

KW - Ellipsoidal neutron-focusing mirror

KW - Monte Carlo simulation

KW - NRSE

KW - Neutron spectroscopy

KW - Neutron spin echo

KW - Phase correction

UR - https://www.scopus.com/pages/publications/85108851135

U2 - 10.1016/j.nima.2021.165480

DO - 10.1016/j.nima.2021.165480

M3 - Article

AN - SCOPUS:85108851135

SN - 0168-9002

VL - 1010

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

M1 - 165480

ER -

Double-focusing geometry for phase correction in neutron resonance spin-echo spectroscopy

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Keywords

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