Elastic and dynamical structural properties of La and Mn-doped SrTiO studied by neutron scattering and their relation with thermal conductivities

Kajimoto, Ryoichi; Nakamura, Mitsutaka; Murai, Naoki; Shamoto, Shinichi; Honda, Takashi*; Ikeda, Kazutaka*; Otomo, Toshiya*; Hata, Hiroto*; Eto, Takahiro*; Noda, Masaaki*; et al.

Scientific Reports (Internet), 8(1), p.9651_1 - 9651_8, 2018/06

https://doi.org/10.1038/s41598-018-27984-z

Materials and Life Science Experimental Facility at the Japan Proton Accelerator Research Complex, 3; Neutron devices and computational and sample environments

Sakasai, Kaoru; Sato, Setsuo*; Seya, Tomohiro*; Nakamura, Tatsuya; To, Kentaro; Yamagishi, Hideshi*; Soyama, Kazuhiko; Yamazaki, Dai; Maruyama, Ryuji; Oku, Takayuki; et al.

Quantum Beam Science (Internet), 1(2), p.10_1 - 10_35, 2017/09

https://doi.org/10.3390/qubs1020010

Neutron devices such as neutron detectors, optical devices including supermirror devices and He neutron spin filters, and choppers are successfully developed and installed at the Materials Life Science Facility (MLF) of the Japan Proton Accelerator Research Complex (J-PARC), Tokai, Japan. Four software components of MLF computational environment, instrument control, data acquisition, data analysis, and a database, have been developed and equipped at MLF. MLF also provides a wide variety of sample environment options including high and low temperatures, high magnetic fields, and high pressures. This paper describes the current status of neutron devices, computational and sample environments at MLF.

Object oriented data analysis environment for neutron scattering

Suzuki, Jiro*; Kajimoto, Ryoichi; Ohara, Takashi; Yonemura, Masao*; Aoyagi, Tetsuo; Manabe, Atsushi*; Nakatani, Takeshi; Otomo, Toshiya*; Kawabata, Setsuya*

no journal, , 

Manyo-Lib is a framework of software designed for data analysis for neutron scattering experiment. It is one of the fundamental software used in J-PARC/MLF. Manyo-Lib consists of class libraries of C++ and Python interfaces that wrap the class libraries. The purpose of Manyo-lib is to offer operators for analysis, data containers, distributed computing environment, common data formats necessary to analyzing experiment data generated by various scattering equipments and various research regions. We are going to use NeXus as our common file format.

Current status of software development for chopper spectrometer in MLF

Inamura, Yasuhiro; Nakajima, Kenji; Kajimoto, Ryoichi; Otomo, Toshiya*; Nakatani, Takeshi; Suzuki, Jiro*; Arai, Masatoshi; So, J.-Y.*; Park, J.-G.*; Perring, T.*; et al.

no journal, , 

We report the plan and current status of development for software used on high-intensity chopper spectrometer, 4SEASONS, and Cold Neutron Disk-Chopper Spectrometer, CNDCS, at Materials and Life Science Facility(MLF), J-PARC. We begin to design software packages based on many required functions for performing experiments and analysis, for example control spectrometer system (data acquisition, devices), suggestion of experiment conditions, visualization and so on. This project progresses with software company. On the other hand, we started to collaborate with Korean group about the development of analysis software for inelastic scattering. In this presentation, we will present the current status and plan for software development including collaboration with Korean group.

Present status of the computing environment for the experimental instruments in J-PARC/MLF

Nakatani, Takeshi; Inamura, Yasuhiro; Ito, Takayoshi; Kajimoto, Ryoichi; Harjo, S.; Ohara, Takashi; Otomo, Toshiya*; Suzuki, Jiro*; Muto, Suguru*; Yasu, Yoshiji*; et al.

no journal, , 

The first neutron was produced on May 2008, the first muon was extracted on September 2008 and the operation for the first user program started on December 2008 in J-PARC/MLF. The beam power of proton are increasing from 4.3kW to 120kW, the number of the experimental instruments are increasing from 8 to 14. In addition, the constructions of new instruments were started in this year. Many users started the experiments in each instruments and measured the data. Under these situations, the requirements of the MLF computing environment are increased more and more. In this year, we provided the project management server, the trial distributed data processing system, the sample management system with database and Gigabit Ethernet backbone.

Current status of software development on chopper spectrometers for MLF, J-PARC

Inamura, Yasuhiro; Nakajima, Kenji; Kajimoto, Ryoichi; Otomo, Toshiya*; Nakatani, Takeshi; Suzuki, Jiro*; Arai, Masatoshi; So, J.-Y.*; Park, J.-G.*

no journal, , 

We report the current status of software development for chopper spectrometers, 4SEASONS, and AMATERAS, at Materials and Life Science Facility (MLF), J-PARC. This development work consists of several parts, i.e. the control system on spectrometer (data acquisition and devices), support for decisions of experimental conditions, sample environment (direction alignment), data reduction and visualization. On commissioning of spectrometers, using actual neutron beam, we have already utilized our software in the processes of obtaining neutron signals as event-by-event data, transforming them to histograms and visualizing the results. Especially, using event data, we have successfully demonstrate to visualize two-dimensional maps of dynamical structure factors measured with different incident energies simultaneously obtained by one measurements by multiple incident energy measurement on 4SEASONS.

Current status of software for chopper spectrometer at MLF, J-PARC

Inamura, Yasuhiro; So, J.-Y.*; Nakajima, Kenji; Park, J.-G.*; Kajimoto, Ryoichi; Nakatani, Takeshi; Suzuki, Jiro*; Otomo, Toshiya*; Arai, Masatoshi

no journal, , 

We report the current status of software development for inelastic spectrometers and its demonstration on 4SEASONS, high intensity chopper spectrometer, and AMATERAS, cold neutron disk-chopper spectrometer, at Materials and Life Science Facility (MLF), J-PARC. The software developed by current work consists of several parts, (1) the instrument control, (2) the informative visualization, (3) the commands sequence control, (4) the data reduction and (5) the data visualization. Resulted software has been already employed for actual measurements and by using it we have obtained significant results from neutron instruments at MLF. For example, we have successfully demonstrated to analyze and visualize several dynamical structure factors with different incident energies obtained simultaneously by one measurement at 4SEASONS. High flexibility of event-recorded data treated by the data reduction software has a large contribution to realize such a new technique for inelastic neutron scattering.

Current status of software development for chopper spectrometers in MLF

Inamura, Yasuhiro; So, J.-Y.*; Nakajima, Kenji; Park, J.-G.*; Nakatani, Takeshi; Kajimoto, Ryoichi; Otomo, Toshiya*; Suzuki, Jiro*; Arai, Masatoshi

no journal, , 

We report the current status of software development for high-intensity chopper spectrometer, 4SEASONS, and cold neutron disk-chopper spectrometer, AMATERAS, at Materials and Life Science Facility (MLF), J-PARC. Utilizing the products of these developments, a number of results on science already come up. However, we did not make use of a huge data from strong neutron source effectively because of a lack of some software for users to treat them. By the progress of latest developments, the software environment around users gradually becomes better, especially on executing many measurements and analysis with different sample orientation or measurement with many temperature steps.

Current status and future plan of sample environment in MLF, J-PARC

Kawamura, Seiko; Yokoo, Tetsuya*; Kambara, Wataru; Munakata, Koji*; Kajimoto, Ryoichi*; Nakatani, Takeshi; Kaneko, Koji; Kawakita, Yukinobu; Takata, Shinichi; Nakajima, Kenji; et al.

no journal, , 

In large user facilities such as neutron experimental facilities, sample environment (SE) is one of the most important factors to yield high-quality output. In the Materials and Life Science Experimental Facility (MLF) in J-PARC, various neutron experiments have been performed in wide range of scientific researches and industrial applications, and the number and variety of proposals will further increase after resuming operation of J-PARC. At the beginning stage, the SE team in MLF has discussed SE standardization, to save the cost and manpower, to make compatibility among instruments, and to increase the experimental efficiency by sharing the SE devices and techniques for operation. Recently we started preparation of "SE area" in the experimental hall, where we can do maintenance of equipments, pre-cooling of cryostats and so on. The SE team is now discussing future plan including user support system.

Development status of software Utsusemi for chopper spectrometers at MLF, J-PARC

Inamura, Yasuhiro; Nakatani, Takeshi; Kajimoto, Ryoichi*; Suzuki, Jiro*; Otomo, Toshiya*

no journal, , 

Our software, named "Utsusemi", has already been utilized in actual users measurements, while we are proceeding with developments for more effective use of high flux neutrons and event-recording methods. Especially, we have successfully demonstrated a measurement of a single crystal of 3D spin system; several tens of measurements by rotating the sample, and visualization of the measured data forming intensity maps in large Q space. This has been achieved by developments of software to perform automatic devices control (sample rotation and data acquisition) and to handle huge data for visualization. Also, we approach developments for the system to make and use event-recorded data from instruments information and sample environments, for example a chopper phasing, temperature and direction of a sample. These event data also can be stored by same DAQ software as neutrons and used in analysis to filter neutrons events by conditions of both an instrument and samples.