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Toh, Yosuke; Ebihara, Mitsuru*; Huang, M.; Kimura, Atsushi; Nakamura, Shoji; Harada, Hideo
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no abstracts in English
Nakagawa, Hiroshi
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The directions of the neutron inelastic scattering in life science research have been shown by conquering the weak point which neutron experimental maneuver has by the supplement by the interpretation by a molecular simulation, and the device of procurement of a sample. By using a molecular simulation to the analysis of the experimental data of neutron inelastic scattering, it can be said that it is the research which it not only says that the analysis to which calculation was united with the experiment complementarily and synergistically compensates the weak point which experimental maneuver only has, but was excellent in neutron use in the point of pulling out the information potentially included in experimental data of analyzing structure dynamics by atomic resolution. Hydration of a biomolecule and research of dynamics have many outstanding problems which are not known if it is not a neutron, and have inquired by harnessing the advantage of a neutron to the utmost. And the structure fluctuation supporting the function of a biomolecule solved the structure revealed by an interaction with hydrated water by research which combined neutron inelastic scattering and a molecular simulation.
Hattori, Takanori; Yagafarov, O.*; Katayama, Yoshinori; Chiba, Ayano*; Sano, Asami; Inamura, Yasuhiro; Otomo, Toshiya*; Matsuzaki, Yuki*; Shimojo, Fuyuki*
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PLANET is the beamline dedicated for the high-pressure experiments. The operation has been started at JFY 2013, and now many users are coming to use. In this talk, we introduce the current state of the PLANET and the example of the structure analysis of disordered materials. PLANET adopted the double staged compression system of the multi anvil 6-6, and enables the data collation at 10 GPa and 2000 K. To extend accessible PT range, we newly introduce another compression system of multi-anvil 6-8, and succeeded in generating 16 GPa and 1273 K. In addition, the PLANET is designed so that we can analyze the structure of liquid under pressure. In the analysis, the program for liquid analysis developed at BL21 NOVA is used. Here, we briefly introduce the reliability of the results and the pressure evolution of the silica glass.
Baba, Yuji; Shimoyama, Iwao; Hirao, Norie; Izumi, Toshinori
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no abstracts in English
Kai, Tetsuya; Uchida, Toshitsugu; Kinoshita, Hidetaka; Seki, Masakazu; Ueno, Hideki; Haga, Katsuhiro; Kogawa, Hiroyuki; Wakui, Takashi; Naoe, Takashi; Takada, Hiroshi
no journal, ,
no abstracts in English
Oikawa, Kenichi; Harada, Masahide; Meigo, Shinichiro
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The brightness distribution of decoupled moderator was measured at BL10 in 2014. Detailed data analysis will be presented in the session. We will also present preliminary results of the performance test of the high-power operation of J-PARC/MLF.
Ito, Takayoshi*; Harjo, S.; Inamura, Yasuhiro; Kawasaki, Takuro; Nakatani, Takeshi; Akita, Koichi; Gong, W.; Aizawa, Kazuya
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We developed an event-recording system for recording information of neutron generation and detection and sample environmental conditions like load, strain, etc. as events with synchronized timing tag across whole system, and developed a software to handle the event data at the Engineering Materials Diffractometer TAKUMI at the Materials and Life Science Experimental Facility in J-PARC. It gave us several advantages by allowing us flexible data reduction depending on users' purposes, especially for time resolved experiments. We demonstrated in situ neutron diffraction measurements using these new recording system and software during fatigue test to show the advantages.
Kajimoto, Ryoichi; Nakamura, Mitsutaka; Hata, Hiroto*; Eto, Takahiro*; Okuda, Tetsuji*
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no abstracts in English
Honda, Mitsunori; Shimoyama, Iwao; Baba, Yuji; Okamoto, Yoshihiro; Suzuki, Shinichi; Yaita, Tsuyoshi
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no abstracts in English
Hajima, Ryoichi
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no abstracts in English
Kanari, Yukiko; Kaminaga, Kiichi; Sakamoto, Yuka; Narita, Ayumi; Noguchi, Miho; Usami, Noriko*; Kobayashi, Katsumi*; Suzuki, Keiji*; Yokoya, Akinari; Fujii, Kentaro
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no abstracts in English
Haga, Katsuhiro; Naoe, Takashi; Wakui, Takashi; Kogawa, Hiroyuki; Futakawa, Masatoshi; Kai, Tetsuya; Kinoshita, Hidetaka; Takada, Hiroshi
no journal, ,
The pressure waves are generated in the mercury target of J-PARC by the injection of high power pulsed proton beams and induce cavitation damages on the mercury target wall. The damages are the serious threat factor for the lifetime of the target vessel. After the beam operation of 200 kW corresponding to the accumulated power of 470 MWh, damages with the maximum depth of 0.25 mm were found on the inner surface of the mercury target, and the counter measure to mitigate the damage was recognized to be important. The technique to inject micro-bubbles into the mercury target vessel which has been developed to mitigate the cavitation damages was applied to the next target vessel and the beam operation in the range of 200 kW to 300 kW was continued to 2050 MWh. A specimen was cut out from the target vessel and inspected visually by a remote video camera. No conspicuous damages were found on the specimen. This fact demonstrates the efficacy of the micro-bubble injection to mitigate the cavitation damages. The newly installed target vessel has double wall structure at the beam window as the additional technique for the cavitation damage mitigation. The rapid mercury flow in the narrow channel made by the double wall prevent the cavitation bubble from growing and moderate the severity of the cavitation energy. The efficacy of the double wall structure will be investigated by cutting out the specimen from the target vessel in the future.
Sakamoto, Yuka; Kanari, Yukiko; Kaminaga, Kiichi; Narita, Ayumi; Noguchi, Miho; Usami, Noriko*; Kobayashi, Katsumi*; Fujii, Kentaro; Yokoya, Akinari
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no abstracts in English
Kaminaga, Kiichi; Narita, Ayumi; Noguchi, Miho; Kanari, Yukiko; Sakamoto, Yuka; Usami, Noriko*; Yokoya, Akinari
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no abstracts in English
Kawasaki, Takuro; Ito, Takayoshi*; Inamura, Yasuhiro; Nakatani, Takeshi; Harjo, S.; Gong, W.; Iwahashi, Takaaki; Aizawa, Kazuya
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no abstracts in English
Nakajima, Kenji; Kawamura, Seiko; Kikuchi, Tatsuya; Inamura, Yasuhiro; Kawakita, Yukinobu; Kajimoto, Ryoichi; Nakamura, Mitsutaka; Soyama, Kazuhiko; Arai, Masatoshi; Aoyama, Kazuhiro; et al.
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no abstracts in English
Inamura, Yasuhiro; Ito, Takayoshi*; Suzuki, Jiro*; Nakatani, Takeshi; Otomo, Toshiya*
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We report the current status of data analysis software "Utsusemi" at Materials and Life Science Facility (MLF), J-PARC. The core codes of analysis part are written in C++ on a software framework for data analysis utilized in MLF, named "Manyo Library". User interface for these codes is in Python to enable users easily to develop new codes using "Utsusemi" for their own purpose. The products of this work were successfully utilized in actual users analysis for chopper spectrometers, while we were proceeding with developments intensively for the analysis to use effectively the event-recording data outputted from DAQ-middleware produced by KEK. In these years, not only the inelastic instruments but also many of other instruments in MLF begin to introduce this new "Utsusemi" to achieve more flexible analysis using event-recording method. Now, "Utsusemi" has a role of one of software framework in MLF to analyze event-recording data.
Fukaya, Yuki; Maekawa, Masaki; Kawasuso, Atsuo; Mochizuki, Izumi*; Wada, Ken*; Hyodo, Toshio*
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no abstracts in English