| ■ J-PARC News - August 2015 (Issue #124) |
| ●Mercury Target Vessel Displayed at National Museum of Nature and Science! (July 28 to Augusto 10, Tokyo/Ueno) |
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| The mercury target vessel for the pulsed neutron source of the Materials and Life Science Experimental Facility (MLF) which improved its performance by applying the research "Development of Technics Using Microbubbles to Curb Pressure Waves in Liquid Metal in order to realize a High-Intensity Pulsed Neutron Source" received a 2014 Medal for New Technology from the Japan Society of Mechanical Engineers, and it was exhibited together with other award-winning items at the exhibition booth of the Japan Society of Mechanical Engineers entitled "Presenting Advanced Science and Technology in Japan" at the National Museum of Nature and Science. The booth was visited by many visitors looking to see cutting edge science and technology in Japan. |
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| On July 20, an agreement on mutual cooperation in the field of neutron science was concluded between the High Energy Accelerator Research Organization/Japan Atomic Energy Agency (J-PARC) and the Australian Nuclear Science and Technology Organization (ANSTO). The CEO of ANSTO, Dr. Adi Paterson, lost no time in visiting the Japan Atomic Energy Agency (JAEA), and the specifics of future research cooperation were discussed with Naohito Saito, Director of the J-PARC Center, Toshiji Kanaya, Leader of the Materials and Life Science Division, and Masayasu Takeda, Deputy Director General of Quantum Beam Science Center. There are high expectations for active cooperation in areas such as joint hosting of research meetings, and determination of topics for researcher exchanges. Later, Dr. Paterson visited the MLF, the Hadron Experimental Facility, Neutrino Experimental Facilities and JRR-3 (Japan Research Reactor-3) of JAEA. |
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| This workshop was held on the roadmap for neutrino research using research facilities in Japan. The purpose of the workshop was to formulate a roadmap for research using neutrino-related research facilities in Japan, such as the Super-Kamiokande of the Institute for Cosmic Ray Research, University of Tokyo, and the Hyper-Kamiokande which is planned for the future and thereby enable continuous production of results to help drive global neutrino research. About 70 researchers from inside and outside of Japan participated in the workshop, and there were lively discussions across boundaries of existing research groups. |
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| The 1st Japan-Korea Joint Workshop on Polarized Neutron Reflectometry (WS) was held at the J-PARC Research Building. The WS was held for the first time based on the Korean J-PARC User Center Program (CKor J-PARC), and the workshop began with a description of the nature of the program. Next, overviews were presented by both sides regarding the five neutron reflectometers installed at MLF and the Korea Atomic Energy Research Institute (KAERI). After that, there was a tour of the MLF, followed by reports on the current situation of neutron optical devices and helium spin-polarized filters which are the subject of ongoing research in both Japan and Korea. This was a useful forum for exchanging information, and the two sides confirmed that they will further strengthen cooperation in the future. |
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| This meeting was held, with participation by about 60 experts, researchers and students in a variety of research fields, to enable extension of the use of BL04 "ANNRI" (Accurate Neutron-Nucleus Reaction Measurement Instrument) of the MLF to research in a broader range of fields. The greetings at the opening of the meeting included reports on the current status of the MLF by the J-PARC Center. In sessions on Non-Destructive Analysis, Nucleus Data, and Cutting Edge Science using Neutrons, there were 16 presentations and information exchange sessions. During the general review, there were lively discussions of issues facing the sustained development of ANNRI, and methods for resolving those issues. |
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| (1) At the linac, preparation of a test stand was conducted for carrying out various performance experiments using 3 MeV beams. As part of that, the first Radio Frequency Quadrupole (RFQ1) stored in the accelerator tunnel was carried into and installed in the Klystron Test Area. (2) At the Muon D-line area of the Materials and Life Science Experimental Facility (MLF), the superconducting solenoid electromagnet was replaced in order to improve beamline performance. (3) At the Neutrino Experimental Facility, various tasks are being energetically carried out, such as inspection of the target cooling helium circulation system, beam profile monitor and other systems, and preparation for a transfer of the electromagnetic horn to the maintenance area. |
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| Just like last year, the J-PARC Center held a science project workshop for fifth and sixth grade students from the village's elementary schools. This year's theme was making clocks using cardboard and chopsticks. The classes were very popular and filled up soon after the call for participants was announced. While listening to an explanation by J-PARC public relations advisor, Dr. Shinichi Sakamoto, the students took up the challenge of making clocks by cutting and gluing cardboard, and passing through chopsticks. Midway through, there were presentations of sand clocks, water clocks, and other types of clocks made with familiar materials. Everyone struggled hard, and completed a moving clock one way or another. It seemed that the harder work it was, the greater thrill children felt when their clock moved. |
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| Together with the JAEA, the J-PARC Center presented an experiment and demonstration booth at the 2015 National Conference of the Youngsters' Science Festival. At this booth, there was a class on how to make "clip motors" from a magnet, battery, paper clip and enamel wire, and demonstrations of a "superconducting roller coaster" in which a superconductor is magnetically levitated and made to travel along rails, and a "traveling battery" in which a battery with an attached magnet travels through a coil. Many children and adults participated in these experiments and demonstrations, and the booth was a great success. |
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