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Nakamura, Mitsutaka; Ikeuchi, Kazuhiko*; Kajimoto, Ryoichi; Kambara, Wataru; Krist, T.*; Shinohara, Takenao; Arai, Masatoshi; Iida, Kazuki*; Kamazawa, Kazuya*; Inamura, Yasuhiro; et al.
JAEA-Conf 2015-002, p.339 - 348, 2016/02
We have developed a new Fermi chopper referred to as Magic chopper to realize the full optimization of the experimental condition for Multi-Ei method in a chopper spectrometer. In this study, the theoretical aspects of MAGIC chopper concept will be initially presented, and the performances of MAGIC chopper will be evaluated by both Monte Carlo simulation and neutron transmission experiment.
Nakamura, Mitsutaka; Kambara, Wataru; Krist, T.*; Shinohara, Takenao; Ikeuchi, Kazuhiko*; Arai, Masatoshi; Kajimoto, Ryoichi; Nakajima, Kenji; Tanaka, Hiromichi; Suzuki, Junichi*; et al.
Nuclear Instruments and Methods in Physics Research A, 737, p.142 - 147, 2014/02
Times Cited Count：3 Percentile：27.01(Instruments & Instrumentation)The efficiency of inelastic neutron scattering measurements using a chopper spectrometer can be markedly improved by utilizing multiple incident energies (Multi-Ei method). However, in conventional chopper systems, optimization of the experimental condition for all incident energies is absolutely impossible. We developed a new Fermi chopper with a supermirror-coated slit package in order to overcome the problem and experimentally demonstrated that the full optimization of the experimental condition for multiple incident energies is nearly achieved.
Nakamura, Mitsutaka; Arai, Masatoshi; Kajimoto, Ryoichi; Yokoo, Tetsuya*; Nakajima, Kenji; Krist, T.*
Journal of Neutron Research, 16(3-4), p.87 - 92, 2008/09
no abstracts in English
Nakamura, Mitsutaka; Nakajima, Kenji; Kajimoto, Ryoichi; Yokoo, Tetsuya*; Krist, T.*; Arai, Masatoshi
no journal, ,
Inelastic neutron scattering measurement utilizing the multiple incident energies (multi-
measurement) is a promising method to improve the measurement efficiency of chopper spectrometers at pulsed neutron sources. Multi- measurement can eliminate the detection dead time in time-of-flight measurement. We have been considering the instrumental design and novel device to realize the multi- measurement in several types of chopper spectrometer. In this presentation, the result of a series of considerations will be given. Particularly, we will introduce the disk-chopper arrangements for multi disk-chopper type spectrometer, and also the supermirror coated slit package system for Fermi chopper type spectrometer.
Nakamura, Mitsutaka; Kambara, Wataru; Shinohara, Takenao; Ikeuchi, Kazuhiko*; Kajimoto, Ryoichi; Nakajima, Kenji; Yokoo, Tetsuya*; Krist, T.*; Arai, Masatoshi; Suzuki, Junichi*; et al.
no journal, ,
The efficiency of inelastic neutron scattering measurements by a chopper spectrometer can be markedly improved by utilizing multiple incident energies (Multi-Ei method). However, in conventional chopper systems, optimization of the experimental condition for all incident energies is absolutely impossible. In order to overcome this problem, we developed a new Fermi chopper with a supermirror-coated slitpackage (MAGIC chopper). In this presentation, we will introduce the principle of MAGIC chopper and discuss the performance test of a rotating supermirror-coated slitpackage.
Nakamura, Mitsutaka; Kambara, Wataru; Shinohara, Takenao; Ikeuchi, Kazuhiko*; Kajimoto, Ryoichi*; Krist, T.*; Tanaka, Hiromichi; Suzuki, Junichi*; Harada, Masahide; Oikawa, Kenichi; et al.
no journal, ,
Nakamura, Mitsutaka; Kambara, Wataru; Krist, T.*; Shinohara, Takenao; Ikeuchi, Kazuhiko*; Arai, Masatoshi; Kajimoto, Ryoichi*; Nakajima, Kenji; Tanaka, Hiromichi; Suzuki, Junichi*; et al.
no journal, ,
In order to improve the measurement efficiency of inelastic neutron scattering experiment, we developed a new Fermi chopper with a supermirror-coated slitpackage (MAGIC chopper). In this study, we report the experimental demonstration that the full optimization of the experimental condition for multiple incident energies is nearly achieved by the prototype of MAGIC chopper.
