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Ishikado, Motoyuki*; Takahashi, Ryuta*; Yamauchi, Yasuhiro*; Nakamura, Masatoshi*; Ishimaru, Sora*; Yamauchi, Sara*; Kawamura, Seiko; Kira, Hiroshi*; Sakaguchi, Yoshifumi*; Watanabe, Masao; et al.
JPS Conference Proceedings (Internet), 41, p.011010_1 - 011010_7, 2024/05
Kaneko, Koji; Tabata, Chihiro; Hagihara, Masato; Yamauchi, Hiroki; Oba, Yojiro; Kumada, Takayuki; Kubota, Masato; Kojima, Yuki*; Nabatame, Nozomi; Sasaki, Miki; et al.
JPS Conference Proceedings (Internet), 41, p.011015_1 - 011015_6, 2024/03
Hasemi, Hiroyuki; Takahashi, Ryuta*; Yamauchi, Yasuhiro*; Ishikado, Motoyuki*; Kawamura, Seiko; Komine, Ryota
JPS Conference Proceedings (Internet), 41, p.011003_1 - 011003_5, 2024/03
Kawamura, Seiko; Takahashi, Ryuta*; Ishikado, Motoyuki*; Yamauchi, Yasuhiro*; Nakamura, Masatoshi*; Ouchi, Keiichi*; Kira, Hiroshi*; Kambara, Wataru*; Aoyama, Kazuhiro*; Sakaguchi, Yoshifumi*; et al.
Journal of Neutron Research, 21(1-2), p.17 - 22, 2019/05
The Cryogenics and Magnets group in the Sample Environment team is responsible for operation of cryostats and magnets for user's experiments at the MLF in J-PARC. We have introduced a top-loading 
He cryostat, a bottom-loading 
He cryostat, a dilution refrigerator insert and a superconducting magnet. The frequency of use of them dramatically becomes higher in these two years, as the beam power and the number of proposal increase. To respond such situation, we have made efforts to enhance performance of these equipment as follows. The He cryostat originally involves an operation software for automatic initial cooling down to the base temperature and automatic re-charge of He. Recently we made an additional program for automatic temperature control with only the sorb heater. Last year, a new outer vacuum chamber of the magnet with an oscillating radial collimator (ORC) was fabricated. The data quality was drastically improved by introducing this ORC so that the magnet can be used even for the inelastic neutron scattering experiments.
Watanabe, Masao; Nojiri, Hiroyuki*
Journal of Neutron Research, 21(1-2), p.39 - 45, 2019/05
Magnetic field acts directly on the spin and the orbital motion of electron in the material and interesting quantum phenomena and phase transition are found in high magnetic field. Recently, experimental equipments using neutron beams in high magnetic field have been rapidly developed. For example, superconducting DC magnet up to 17 T has developed for neutron scattering experiments. Although the sample environment team in the MLF have several DC superconducting magnets up to 7 T as a sample environment apparatus, some users have requested the preparation of higher field magnets. However, another magnet technology is needed to generate higher than 20 T. However, it is difficult to construct such a large system in the MLF from the point of view of construction space. It is practical to employ a pulsed magnetic field as it enables operation of smaller energy as well as downsizing of the instruments. Therefore, we have been developed a compact and movable pulsed magnet system up to 30 T.
Kawamura, Seiko; Oku, Takayuki; Watanabe, Masao; Takahashi, Ryuta; Munakata, Koji*; Takata, Shinichi; Sakaguchi, Yoshifumi*; Ishikado, Motoyuki*; Ouchi, Keiichi*; Hattori, Takanori; et al.
Journal of Neutron Research, 19(1-2), p.15 - 22, 2017/11
Sample environment (SE) team at the Materials and Life Science Experimental Facility (MLF) in J-PARC has worked on development and operation of SE equipment and devices. All the members belong to one sub-team at least, such as Cryogenic and magnet, High temperature, High pressure, Soft matter and special environment including Pulse magnet, Hydrogen environment, Light irradiation and He spin filter. Cryostats, a magnet, furnaces, a VX-6-type Paris-Edinburgh press and a prototype of a Spin-Exchange Optical Pumping (SEOP) based He spin filter for polarized neutron beam experiments are in operation. Furthermore, a prototype of compact power supply for a pulsed magnet system is currently developed. In the J-PARC Research Building, several pieces of equipment for softmatter research such as a rheometer and a gas and vapor adsorption measurement instrument have been prepared.
Kawamura, Seiko; Kambara, Wataru; Yamauchi, Yasuhiro; Yokoo, Tetsuya*; Munakata, Koji*; Kawakita, Yukinobu; Nakatani, Takeshi; Torii, Shuki*; Kajimoto, Ryoichi*; Nakajima, Kenji; et al.
no journal, ,
Current status and plans of sample environment (SE) in MLF are introduced and discussed in the presentation. As a new SE device, a 7 T vertical-field superconducting magnet was install in March 2012, and is scheduled to be used for a general user's experiment coming October. Pulse magnet system for neutron experiments has also been developed in IMR group in Tohoku Univ., and 40 T of pulsed magnetic field has successfully applied in a neutron experiment in our facility. Furthermore, we have planned effective use of SE resources of the KEK neutron facility (KENS), which was shutdown in 2006, and we completed transportation of them from Tsukuba to MLF in FY2011, One of remaining issues is user support system on SE.
Kaneko, Koji; Ohara, Takashi; Kiyanagi, Ryoji; Kawasaki, Takuro; Oikawa, Kenichi; Tamura, Itaru; Yamauchi, Yasuhiro; Hanashima, Takayasu*; Moyoshi, Taketo*; Nakao, Akiko*; et al.
no journal, ,
Munakata, Koji*; Osakabe, Toyotaka
no journal, ,
no abstracts in English
Kawamura, Seiko; Yokoo, Tetsuya*; Kambara, Wataru; Inamura, Yasuhiro; Nakatani, Takeshi; Torii, Shuki*; Kajimoto, Ryoichi; Nakajima, Kenji; Kaneko, Koji; Kawakita, Yukinobu; et al.
no journal, ,
Materials and Life Science Experimental Facility at J-PARC started the user program in December 2008. Various neutron experiments are currently performed there in wide range of scientific researches and industrial applications. Standardization of sample environment (SE) equipments is one of the most important things at the beginning stage. Especially in our country, it often happens that each instrument carries and operates SE devices independently. This situation results in an excess of the cost and incompatibility among the instruments unless we have any guidelines. Thus the SE team has discussed the SE-protocol, in which flange size, thermometers, controllers etc. are standardized. This should bring about saving the cost and manpower and increasing compatibility. The SE team is now discussing user support system in SE, preparation of the SE area, and so on. The technical staff members started working on practical things such as cooling test of cryostats.
Hattori, Takanori; Sano, Asami; Machida, Shinichi*; Abe, Jun*; Funakoshi, Kenichi*; Okazaki, Nobuo*; Kakizawa, Sho*
no journal, ,
PLANET is the neutron beamline dedicated to high-pressure experiments in J-PARC. One of most characteristic features is its ability to conduct diffraction measurements simultaneously at high pressures and high temperatures up to 24 GPa and 1200 K, respectively. Another characteristic feature is its ability to collect clean pattern without parasitic scattering from materials around sample by defining the diffraction gauge volume with narrow incident slits and radial collimators with a field of view of 0.8-3.0 mm at the sample position. This enables precise structure determination not only of crystals but also of liquids and amorphous solids. Furthermore, it also enables the use of smaller samples, which contributes to increase maximum available pressure. In this presentation, the performance and recent developments of the beamline will be introduced along with recent scientific results obtained at PLANET.
Tabata, Chihiro; Takada, Shusuke*; Shimojo, Yutaka; Okawara, Manabu*; Ikeda, Yoichi*; Ino, Takashi*; Kawamura, Seiko; Oku, Takayuki; Fujita, Masaki*; Kaneko, Koji
no journal, ,
Yamauchi, Yasuhiro; Sakaguchi, Yoshifumi*; Munakata, Koji*; Ishikado, Motoyuki*; Kambara, Wataru; Kawamura, Seiko; Yokoo, Tetsuya*; Aso, Tomokazu; Aizawa, Kazuya
no journal, ,
In April 2013, Technology Development Section was newly established in Materials and Life Science Division, J-PARC Center to promote user support, maintenance and development of common devices. Simultaneously, the official sample environment (SE) group was organized in this section, and then some staff members from CROSS also joined this group. We have supported operation of beamline (BL)-common SE equipment at various BL's and have modified them partly to improve the safety and usability in operation. In addition to them, we have carried out operation and maintenance of some pieces of equipment dedicated to BL's, in order to enhance specialized skills and experience. Utilities of the SE working area have been equipped almost completely, and then the working circumstances have been gradually improved.
Munakata, Koji*; Nakao, Akiko*; Osakabe, Toyotaka; Ohara, Takashi
no journal, ,
Oku, Takayuki; Watanabe, Masao; Sakaguchi, Yoshifumi*; Kawamura, Seiko; Takahashi, Ryuta*; Yamauchi, Yasuhiro*; Nakamura, Masatoshi*; Ishikado, Motoyuki*; Ouchi, Keiichi*; Arima, Hiroshi*; et al.
no journal, ,
Sample environment team at the Materials and Life Science Experimental Facility in J-PARC has worked on development and operation of cryogenics, magnets, high temperature, high pressure, soft matter related items and special environment including pulsed magnets, light irradiators and He-3 spin filters. In the talk, our status is presented, and issues are addressed.
Kawamura, Seiko; Hattori, Takanori; Kambara, Wataru*
no journal, ,
Kaneko, Koji; Osakabe, Toyotaka; Shimojo, Yutaka; Yamauchi, Hiroki; Moriai, Atsushi; Asami, Toshio*; Kawana, Daichi*; Sugiura, Ryosuke*; Okawara, Manabu*
no journal, ,
Aso, Tomokazu; Yamauchi, Yasuhiro; Sakaguchi, Yoshifumi*; Munakata, Koji*; Ishikado, Motoyuki*; Kawamura, Seiko; Yokoo, Tetsuya*; Watanabe, Masao; Takata, Shinichi; Hattori, Takanori; et al.
no journal, ,
In FY2013, the SE team was officially organized in Technology Development Section in MLF with succeeding the previous ad hoc SE team. We are working on operation of so-called beam-line (BL)-common SE equipment and development of the SE devices as well as the previous SE team. We have already prepared a vertical-field superconducting magnet, a dilution refrigerator insert, a furnace with Nb heater and 2K cryostat as the BL-common SE equipment. In this fiscal year, a bottom-loading type 
He cryostat will be introduced. Moreover, we have just started developing high pressure system by collaborating with High Pressure Group in MLF, to comply with users' requests. We have also discussed the general purpose of apparatus for pulse magnet and for hydrogen environment. We plan to prepare more working area for the SE equipment, whose number gradually increases, and sample preparation and characterization rooms for users in the new building, which is under construction.
