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Journal Articles

SENJU; A New time-of-flight single-crystal neutron diffractometer at J-PARC

Ohara, Takashi; Kiyanagi, Ryoji; Oikawa, Kenichi; Kaneko, Koji; Kawasaki, Takuro; Tamura, Itaru; Nakao, Akiko*; Hanashima, Takayasu*; Munakata, Koji*; Moyoshi, Taketo*; et al.

Journal of Applied Crystallography, 49(1), p.120 - 127, 2016/02

 Times Cited Count:33 Percentile:94.36(Chemistry, Multidisciplinary)

Journal Articles

Instrument design and performance evaluation of a new single crystal neutron diffractometer SENJU at J-PARC

Oikawa, Kenichi; Kawasaki, Takuro; Ohara, Takashi; Kiyanagi, Ryoji; Kaneko, Koji; Tamura, Itaru; Nakamura, Tatsuya; Harada, Masahide; Nakao, Akiko*; Hanashima, Takayasu*; et al.

JPS Conference Proceedings (Internet), 1, p.014013_1 - 014013_5, 2014/03

A new single crystal time-of-flight neutron diffractometer has been installed at BL18 of the Materials and Life Science Experimental Facility of J-PARC. The diffractometer "SENJU" was designed for precise crystal and magnetic structure analyses using a small crystal less than 1.0 mm$$^3$$ under multiple extreme environments such as low-temperature and high-magnetic field. The first neutron beam was delivered to the sample position on March 5, 2012. Subsequently, the hardware and software of SENJU have been checked and confirmed that they worked fine. At the same time, diffraction experiments of several organic and inorganic crystals have been done using NaCl, C12A7, and so on. In these measurements, Bragg reflections in the high-Q region (d-spacing $$<$$ 0.5 ${AA}$) were clearly observed and analyzed successfully. In this presentation, we will show the instrument design and performance evaluation of SENJU in detail.

Journal Articles

Current status of a time-of-flight single crystal neutron diffractometer SENJU at J-PARC

Tamura, Itaru; Oikawa, Kenichi; Kawasaki, Takuro; Ohara, Takashi; Kaneko, Koji; Kiyanagi, Ryoji; Kimura, Hiroyuki*; Takahashi, Miwako; Kiyotani, Tamiko*; Arai, Masatoshi; et al.

Journal of Physics; Conference Series, 340, p.012040_1 - 012040_4, 2012/02

 Times Cited Count:10 Percentile:94.91

Oral presentation

Single crystal neutron diffractometer under extreme condition

Tamura, Itaru; Oikawa, Kenichi; Takahashi, Miwako*; Kawasaki, Takuro*; Kimura, Hiroyuki*; Kiyanagi, Ryoji*; Ohara, Takashi; Kaneko, Koji; Kiyotani, Tamiko*; Arai, Masatoshi; et al.

no journal, , 

no abstracts in English

Oral presentation

SENJU; A New time-of-flight single crystal neutron diffractometer at J-PARC

Kawasaki, Takuro; Oikawa, Kenichi; Tamura, Itaru; Ohara, Takashi; Kaneko, Koji; Kimura, Hiroyuki*; Kiyanagi, Ryoji*; Takahashi, Miwako; Kiyotani, Tamiko*; Arai, Masatoshi; et al.

no journal, , 

SENJU is a new single crystal diffractometer for spallation neutron source in Materials and Life Science Experimental Facility (MLF) at Japan Photon Accelerator Research Complex (J-PARC). It is currently under construction and is scheduled to be complete by spring 2011. The diffractometer is esigned to perform diffraction experiment under various environmental conditions, and the crystal and magnetic structure of materials whose lattice constants up to 50 ${AA}$ will be studied. SENJU also shed light on the superlattice reflection or diffuse scattering in the reciprocal lattice space to analyze the local structures as well as phase transitions of the materials. At the beginning, the diffractometer will have 31 two-dimensional scintillation detectors to observe the wide area of reciprocal lattice space by one measurement. Various sample environments will be provided, such as cryogenic cooling and magnetic field.

Oral presentation

SENJU; A New single crystal neutron diffractometer at J-PARC

Oikawa, Kenichi; Tamura, Itaru; Ohara, Takashi; Kaneko, Koji; Kawasaki, Takuro; Kimura, Hiroyuki*; Takahashi, Miwako*; Kiyotani, Tamiko*; Kiyanagi, Ryoji*; Noda, Yukio*; et al.

no journal, , 

A new single crystal diffractometer SENJU is currently under construction in the MLF at J-PARC. SENJU is designed to collect diffraction data by use of a laboratory XRD specimen size, and aimed for a precise structure analysis under combined environmental conditions. Very wide variety of experiments will be performed, such as low-temperature, under magnetic field, high pressure, and so on. The construction of SENJU will be completed in March 2011, and the instrument will be received the first neutron before summer maintenance period of 2011.

Oral presentation

Construction of a new single crystal neutron diffractometer "SENJU" at J-PARC

Oikawa, Kenichi; Tamura, Itaru; Ohara, Takashi; Kaneko, Koji; Kawasaki, Takuro; Nakamura, Tatsuya; Sakasai, Kaoru; Arai, Masatoshi; Kimura, Hiroyuki*; Kiyanagi, Ryoji*; et al.

no journal, , 

A new single crystal diffractometer SENJU is currently under construction in the MLF BL18 at J-PARC. SENJU is designed to collect diffraction data by use of a laboratory XRD specimen size, and aimed for a precise structure analysis under combined environmental conditions. Very wide variety of experiments will be performed, such as low-temperature, under magnetic field, high pressure, and so on. As for the most important component, detector system, is improved and optimized version of that of the iBIX system which is currently working well. The construction of SENJU will be completed in March 2011, and the instrument will be received the first neutron before summer maintenance period of 2011.

Oral presentation

SENJU; A New time-of-flight single crystal neutron diffrantometer at J-PARC

Kawasaki, Takuro; Oikawa, Kenichi; Tamura, Itaru; Ohara, Takashi; Kaneko, Koji; Nakamura, Tatsuya; Sakasai, Kaoru; Kimura, Hiroyuki*; Kiyanagi, Ryoji*; Takahashi, Miwako; et al.

no journal, , 

no abstracts in English

Oral presentation

A New single crystal neutron diffractometer SENJU at J-PARC

Oikawa, Kenichi; Kaneko, Koji; Tamura, Itaru; Ohara, Takashi; Kawasaki, Takuro; Kimura, Hiroyuki*; Noda, Yukio*; Takahashi, Miwako*; Kiyotani, Tamiko*; Kiyanagi, Ryoji*; et al.

no journal, , 

A new single crystal neutron diffractometer SENJU is now under construction at a high pace in MLF at J-PARC. SENJU will realize precise structure analysis under the combined extreme conditions such as high-magnetic field and low temperature. The construction will be completed at the end of 2010 fiscal year, and has aimed at the first beam acceptance before the summer of 2011. In the presentation, detailed instrument specs will be introduced, and a concrete sample environment etc. will be described.

Oral presentation

Beamline design of a single crystal neutron diffractometer SENJU

Oikawa, Kenichi; Ohara, Takashi*; Kiyanagi, Ryoji; Kawasaki, Takuro; Tamura, Itaru; Kaneko, Koji; Kimura, Hiroyuki*; Noda, Yukio*; Takahashi, Miwako*; Kiyotani, Tamiko*; et al.

no journal, , 

A new single crystal neutron diffractometer SENJU is now being built at a rapid rate in BL18 of MLF at J-PARC. The instrument realize measurements using small sample, less than 1.0 $$mm^3$$ under combined special environment at 1 MW beam power. We designed the beamline specification considering sample size and its mosaicity, spacial resolution of the area detector, and so on. The concrete design input and their detailed investigation process of the beamline will be presented.

Oral presentation

Construction of new time-of-flight single crystal diffractometer SENJU at J-PARC

Kiyanagi, Ryoji; Oikawa, Kenichi; Tamura, Itaru; Ohara, Takashi; Kawasaki, Takuro; Kaneko, Koji; Nakao, Akiko*; Hanashima, Takayasu*; Munakata, Koji*; Kimura, Hiroyuki*; et al.

no journal, , 

Oral presentation

A New time-of-flight single crystal diffractometer SENJU at J-PARC

Oikawa, Kenichi; Ohara, Takashi*; Kiyanagi, Ryoji; Kawasaki, Takuro; Tamura, Itaru; Kaneko, Koji; Nakamura, Tatsuya; Sakasai, Kaoru; Nakao, Akiko*; Hanashima, Takayasu*; et al.

no journal, , 

SENJU, named after the thousand armed Goddess of Mercy, is a single crystal time-of-flight Laue diffractometer proposed to the MLF at J-PARC. The diffractometer is dedicated for precise crystal and magnetic structure analyses under the combined extreme conditions using a small sample less than 1 $$mm^3$$. TOF-Laue technique coupled with wide area 2D detectors enables the efficient measurements and improves the completeness of the data. A WLSF-type scintillator detector developed for iBIX was modified to meet the requirements of SENJU. Although the construction schedule has been delayed because of the earthquake, on-beam commissioning will start in 2012.

Oral presentation

Current status of a single crystal neutron diffractometer SENJU

Kawasaki, Takuro; Oikawa, Kenichi; Ohara, Takashi*; Kiyanagi, Ryoji; Tamura, Itaru; Kaneko, Koji; Nakamura, Tatsuya; Sakasai, Kaoru; Nakao, Akiko*; Hanashima, Takayasu*; et al.

no journal, , 

no abstracts in English

Oral presentation

Commissioning and current status of the extreme environment single crystal neutron diffractometer SENJU

Kiyanagi, Ryoji; Ohara, Takashi*; Kawasaki, Takuro; Oikawa, Kenichi; Tamura, Itaru; Kaneko, Koji; Hanashima, Takayasu*; Nakao, Akiko*; Munakata, Koji*; Kimura, Hiroyuki*; et al.

no journal, , 

no abstracts in English

Oral presentation

Current status of structure analyses on SENJU

Kiyanagi, Ryoji; Ohara, Takashi*; Kawasaki, Takuro; Oikawa, Kenichi; Tamura, Itaru; Kaneko, Koji; Nakao, Akiko*; Hanashima, Takayasu*; Munakata, Koji*; Kimura, Hiroyuki*; et al.

no journal, , 

no abstracts in English

Oral presentation

Structure analyses on the new TOF neutron single crystal diffractometer, SENJU

Kiyanagi, Ryoji; Ohara, Takashi*; Kawasaki, Takuro; Oikawa, Kenichi; Tamura, Itaru; Kaneko, Koji; Nakao, Akiko*; Hanashima, Takayasu*; Munakata, Koji*; Kimura, Hiroyuki*; et al.

no journal, , 

Oral presentation

Current status of extreme environment single crystal neutron diffractometer SENJU

Kiyanagi, Ryoji; Ohara, Takashi*; Kawasaki, Takuro; Oikawa, Kenichi; Tamura, Itaru; Kaneko, Koji; Hanashima, Takayasu*; Nakao, Akiko*; Munakata, Koji*; Kimura, Hiroyuki*; et al.

no journal, , 

no abstracts in English

Oral presentation

Development of a new TOF single crystal diffractometer SENJU at J-PARC

Ohara, Takashi; Kiyanagi, Ryoji; Kawasaki, Takuro; Oikawa, Kenichi; Kaneko, Koji; Tamura, Itaru; Nakao, Akiko*; Hanashima, Takayasu*; Munakata, Koji*; Kimura, Hiroyuki*; et al.

no journal, , 

SENJU is a new single crystal time-of-flight neutron diffractometer installed at BL18 of J-PARC. SENJU is designed for precise crystal and magnetic structure analyses under multiple extreme environments such as low-temperature, high-pressure and high-magnetic field, and also designed for diffraction measurements of small single crystals less than 1.0 mm$$^{3}$$ in volume. We have successfully achieved structure analysis of a laboratory X-ray size (0.1 mm$$^{3}$$) single organic crystal, measurement and visualization of a complex-shape diffuse scattering pattern and measurement of higher order magnetic reflections in high-Q region (Q$$>$$16${AA}$ $$^{-1}$$) by using SENJU. Those results show that the performance of SENJU is as we expected.

Oral presentation

Installation of additional detectors and T0 chopper on the single crystal neutron diffractometer, SENJU

Kiyanagi, Ryoji; Ohara, Takashi; Kawasaki, Takuro; Oikawa, Kenichi; Kaneko, Koji; Tamura, Itaru; Nakao, Akiko*; Hanashima, Takayasu*; Munakata, Koji*; Moyoshi, Taketo*; et al.

no journal, , 

The single crystal diffractometer, SENJU, which just became open for users, is the instrument designed to perform structure analyses under multiple extreme conditions even with tiny samples. Additional six detectors and T0 chopper were installed in order to improve the data collection efficiency and the background noise arises from the burst neutron. The solid angle covarage increased by 1.2 with the six new detectors, and significant reduction of the background noises were confirmed especially on the detectors at highest and lowest angles.

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