21 July 2011

Supercomputer "K computer" Takes First Place in World

Official release from RIKEN.

http://www.riken.jp/engn/r-world/info/release/press/2011/110620/index.html

Supercomputer "K computer" Takes First Place in World
Achieves world's best performance of 8.162 petaflops to lead TOP500 list


June 20, 2011
RIKEN
Fujitsu Limited

Tokyo, June 20, 2011 - RIKEN and Fujitsu have taken first place on the 37th TOP500 list announced today at the 26th International Supercomputing Conference (ISC'11) held in Hamburg, Germany. This ranking is based on a performance measurement of the "K computer,"(*1) currently under their joint development.

The TOP500-ranked K computer system, currently in the configuration stage, has 672 computer racks equipped with a current total of 68,544 CPUs. This half-built system achieved the world's best LINPACK benchmark performance of 8.162 petaflops (quadrillion floating-point operations per second), to place it at the head of the TOP500 list. In addition, the system has recorded high standards with a computing efficiency ratio of 93.0%. This is the first time since June 2004, when the 'Earth Simulator' took first place, that a Japanese supercomputer has been ranked first on the TOP500 list.

1. Background

RIKEN and Fujitsu have been working together to develop the K computer, with the aim of beginning shared use by November 2012, as a part of the High-Performance Computing Infrastructure (HPCI) initiative led by Japan's Ministry of Education, Culture, Sports, Science and Technology (MEXT). The K computer will be comprised of over 800 computer racks-each equipped with ultrafast and energy-efficient CPUs-that access into a network capable of an immense amount of interconnectivity. The supercomputer system brings together leading-edge technologies for high performance and high reliability.

To test the system's performance at the configuration stage, the K computer's processing speed was measured by the LINPACK benchmark program, placing it on the 37th TOP500 ranking of the world's fastest supercomputers. The TOP500 ranking list began in 1993 and is updated twice a year in June and November.
2. Performance and Future Status of the K computer

The LINPACK benchmark program, running on the part of the system that employs 68,544 CPUs installed on the K computer being configured, recorded the world's top performance of 8.162 petaflops. This gave it the number-one position on the TOP500 list. Moreover, for one of the world's largest supercomputers, it achieved an extraordinarily high computing efficiency ratio of 93.0%. This achievement is made possible by the K computer's integration of technologies, including its massive number of CPUs, the interconnectivity that links them together, and the software that is able to bring out the highest performance from the hardware.

When configuration of the K computer is complete in 2012, it is designed to achieve LINPACK performance of 10 petaflops. It will be widely used in a variety of computational science fields where it is expected to contribute to the generation of world-class research results. The K computer is a wholly made-in-Japan supercomputer, from the research and development of the processors, to system design and manufacturing. Use of the K computer is expected to have a groundbreaking impact in fields ranging from global climate research, meteorology, disaster prevention, and medicine, thereby contributing to the creation of a prosperous and secure society. RIKEN and Fujitsu will continue to work tirelessly toward completing the system's deployment in 2012.

3. RIKEN and Fujitsu Comments

Ryoji Noyori, President, RIKEN

I would like to express my deep gratitude to everyone, beginning with our colleagues at our development partner Fujitsu Limited, who worked so valiantly on the construction of the K computer even under the severe conditions following the Great East Japan Earthquake. It is wonderful to be able to share the joy of this moment with them. I very much believe that the strength and perseverance that was demonstrated during this project will also make possible the recovery of the devastated Tohoku region. As we move forward to complete this project by next June, we will maintain our firm commitment to the maintenance and operation of the system, and I hope to see wonderful results when we begin to make the world's top performing supercomputer available to users around the world.

Michiyoshi Mazuka, Chairman and Representative Director, Fujitsu Limited

I am delighted that we were able to achieve this result, made possible through the tremendous efforts of all involved, despite the impact of the Great East Japan Earthquake. In particular, I am sincerely grateful to our partners in the Tohoku region for their commitment to delivering a steady supply of components, even though they themselves were affected by the disaster. Bringing together hundreds of thousands of components to quickly launch such a massive-scale computing system-which would have been nearly impossible using conventional technologies-requires an incredible level of reliability. I believe that this reliability is truly the pinnacle of Japanese manufacturing. Without being too pleased with ourselves and losing sight of our goal, going forward we will proceed with the system's deployment and, once complete, we look forward to contributing to the achievements that the K computer will make possible.

Press Contacts
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    Office for Research Communications
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    Fujitsu Limited
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Supplementary Explanation
1 K computer
The K computer, which is being jointly developed by RIKEN and Fujitsu, is part of the High-Performance Computing Infrastructure (HPCI) initiative led by Japan's Ministry of Education, Culture, Sports, Science and Technology (MEXT). Configuration of the K computer began in the end of September 2010, with availability for shared use scheduled for 2012. The "K computer" is the nickname RIKEN has been using for the supercomputer of this project since July 2010. "K" comes from the Japanese Kanji letter "Kei" which means ten peta or 10 to the 16th power. The logo for the K computer based on the Japanese letter for Kei, was selected in October 2010. In its original sense, "Kei" expresses a large gateway, and it is hoped that the system will be a new gateway to computational science.

2 LINPACK

A program developed by J. Dongarra, Ph.D., of the University of Tennessee, for solving a system of linear equations using matrix computation. It is the benchmark program used to create the TOP500 list, which ranks the performance of the world's supercomputers (announced in June and November of every year).
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About RIKEN

The mission of RIKEN is to conduct comprehensive research in science and technology (excluding only the humanities and social sciences) as provided for under the "RIKEN Law," and to publicly disseminate the results of its scientific research and technological developments. RIKEN carries out high level experimental and research work in a wide range of fields, including physics, chemistry, medical science, biology, and engineering, covering the entire range from basic research to practical application. RIKEN was first organized in 1917 as a private research foundation, and reorganized in 2003 as an independent administrative institution under the Ministry of Education, Culture, Sports, Science and Technology.

About Fujitsu

Fujitsu is a leading provider of information and communication technology (ICT)-based business solutions for the global marketplace. With approximately 170,000 employees supporting customers in over 100 countries, Fujitsu combines a worldwide corps of systems and services experts with highly reliable computing and communications products and advanced microelectronics to deliver added value to customers. Headquartered in Tokyo, Fujitsu Limited (TSE:6702) reported consolidated revenues of 4.5 trillion yen (US$55 billion) for the fiscal year ended March 31, 2011.

For more information, please see: www.fujitsu.com


The press conference on June 20. From left: RIKEN Advanced Institute for Computational Science Director Kimihiko Hirao, RIKEN President Ryoji Noyori, Fujitsu Limited Chairman and Representative Director Michiyoshi Mazuka, Fujitsu Limited Next Generation Technical Computing Unit President Aiichiro Inoue

Nuclear industry was a major player at universities and research institutions in Japan

But now the question is: If Japan is going to phase out nuclear power, what happens to its huge presence at its universities? The nuclear industry was a major source of funds for taught programs and research (even though much of that ultimately came from government subsidies and support to the industry).

I somehow think majors like 'nuclear safety engineer' are not going to have much appeal to young people.

http://www.iaea.org/inisnkm/nkm/ws/research_institutes/japan.html

Nuclear Research in Japan

This list of names of university institutes and research institutes has been compiled from the INIS Bibliographic Database. It is not intended to be complete, but indicates some of the main institutes that are actively publishing in the nuclear field.

Please consult the Nuclear Energy Handbook for more information about Japan.
Universities

    * Kyushu Univ., Fukuoka (Japan). Dept. of Physics
    * Osaka City Univ. (Japan). Dept. of Physics
    * Kumamoto Univ. (Japan). Faculty of Science
    * Sapporo Gakuin Univ., Ebetsu, Hokkaido (Japan)
    * Tsukuba Univ., Ibaraki (Japan). Inst. of Physics
    * Tokyo Univ., Tanashi (Japan). Inst. for Nuclear Study
    * Chiba Inst. of Tech., Narashino (Japan)
    * Shibaura Inst. of Tech., Tokyo (Japan)

Nuclear Research Laboratories

    * Institute of Physical and Chemical Research, Wako, Saitama (Japan)
    * Science Council of Japan, Tokyo (Japan)
    * CRC Research Inst. Inc., Tokyo (Japan)
    * Japan Nuclear Cycle Development Institute, Tokai, Ibaraki (Japan). Tokai Works
    * Hitachi Ltd., Ibaraki (Japan). Energy Research Lab.
    * National Lab. for High Energy Physics, Tsukuba, Ibaraki (Japan)
    * National Inst. of Radiological Sciences, Nakaminato, Ibaraki (Japan)
    * Japan Nuclear Fuel Industries Co. Inc., Tokyo (Japan)
    * Radioactive Waste Management Center, Tokyo (Japan)
    * Kyoto Fission-Track Co. (Japan)
    * Japan Atomic Energy Research Inst. (JAERI), Tokai, Ibaraki (Japan). Tokai Research Establishment

Nuclear Fusion Research

    * Chubu University, 1200 Matsumoto-cho, 487-8501 Kasugai-City, Aichi-prefecture, Japan
    * Ehime University, Faculty of Science, Department of Physics,2-5 Bunkyo-cho,790-8577 Matsuyama,Japan
    * Electrotechnical Laboratory,Energy Fundamentals Division,1- 1-4 Umezono,305-8568 Tsukuba, Ibaraki,Japan
    * Himeji Institute of Technology, 2167 Shosha, Himeji, Hyogo,671-2201,Japan
          -Department of Electrical Engineering
          -Faculty of Engineering

    * Institute of Physical and chemical Research, lchijoji Matsubara-cho 105, 606-8156, JAPAN
    * ITER XT, Physics Unit, 801-1 Mukojama, 311 -01 Naka, Ibaraki,Japan
    * Kanazawa Institute of Technology, Electrical Power System,Nonoichi,921-8501 Ishikawa,Japan
    * Kyoto University

          -Engineering Physics and Mechanics,Sakyo,606-8501,Japan
          -Graduate School of Energy Science, Uji, Kyoto
          -Institute of Advanced Energy, Uji, Kyoto
          -Department of Physics, Faculty of Science, Kyoto

    * Nagoya University, Furo-cho, Chikusa-ku,464-8603 Nagoya,Japan
    * National Institute for Fusion Science, 322-6 Oroshi-cho, 509-5292 Toki,Japan

          -Department Of Large Helical Device Project
          -Theory and Computer Simulation Center

    * Nihon University, 1-8 Kanda Surugadah, Chiyoda-ku,Tokyo,101-8308, JAPAN

          -Department of Physics
          -Atomic Energy Research Institute

    * University of Tsukuba, Plasma Research Center, Univ. of Tsukuba, Tsukuba Ibaraki, 305-8577, Japan,
    * Kyushu University, Kasuga Koen 6-1,816-8580 Kasuga City, Japan

          -Research Institute for Applied Mechanics
          -Advanced Fusion Research Center,
          -Interdisciplinary Graduate School of Engineering and Sciences

    * Tokyo University of Agriculture and Technology, Technology, 2-24-16 Naka-Machi, Koganei-shi,184-8588 Tokyo,Japan
    * University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku , 113-0033 Tokyo, Japan

          -School of Engineering, Department of Electrical Engineering
          -Nuclear Engineering Research Laboratory, Tokai, Naka, Ibaraki
          -Department of Physics, Graduate School of Science, Bunkyo-ku, Tokyo
          -Complexity Science and Engineering

    * Kyoto Institute of Technology, Department of Electronics and Information Science, Matsugasaki, Sakyo-ku, Kyoto
    * Hitachi Ltd., Power and Industrial Systems R and D Division, Ibaraki-ken
    * Osaka University, Suita, Osaka

          -Institute of Laser Engineering
          -Plasma Physics Laboratory Faculty of Engineering
          -Graduate School of Engineering

    * ITER JCT, Naka Joint Work Site, Naka
    * Tohoku University, Aramaki-aza-Aoba, Aoba-ku, Sendai

          -Department of Quantum Science and Energy Engineering
          -Institute for Materials Research
          -Graduate School of Engineering

    * Tokyo Institute of Technology, Research Laboratory for Nuclear Reactors, O-okayama, Meguro-ku, Tokyo
    * Toshiba Corp.,Energy and Mechanical Research Laboratories, Kawasaki
    * Central Research Institute of Electric Power Industry (CRIEPI), Komae-shi, Tokyo
    * Hiroshima University, Department of Material Science, Hiroshima
    * Okayama University, Faculty of Engineering, Okayama
    * Hokkaido University, Center for Advanced Research of Energy Technology, Sapporo
    * Osaka Institute of Technology, Osaka
    * Toshiba Co., Otawara-shi, Tochigi
    * Yamagata University, Yamagata
    * Iwate University, Department for Electrical Engineering, Morioka, Iwate
    * Japan Atomic Energy Research Institute (JAERI)

          -Tritium Engineering Laboratory, Tokai, Ibaraki
          -Naka Fusion Research Establishment, Mukoyama 801-1,311-0193 Naka-machi, Naka-gun, lbaraki-ken
          -Tritium Engineering Laboratory, Tokai, Ibaraki
          -Blanket Engineering Laboratory, Naka-machi, Naka-gun, Ibaraki-ken
          -Advanced Photon Research Center, Tokai, Naka, Ibaraki
          -Department of Reactor Engineering, Tokai-mura, Ibaraki-ken
          -RF Heating Laboratory
          -Naka Fusion Research Establishment, Tokai Annex, Tokai-mura, Naka-gun, Ibaraki
          -Japanese ITER Home Team

http://www.iaea.org/inisnkm/nkm/ws/countries/japan_universities.html

 University Home Pages

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Hokkaido University
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Kyushu University
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Nagoya University
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Osaka University
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Ritsumeikan University

    * Compact Superconducting Synchotron Radiation light Source
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     *Science University of Tokyo (SUT)

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Tohoku University
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Tokai University
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Tokyo Institute of Technology (TITECH) (
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       *University of Tokyo

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t

School of Engineering, the University of Tokyo 

    * Nuclear Engineering Research Laboratory (UTNL)
    * Fast Neutron Source Reactor YAYOI

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related sites: The University of Tokyo | Nuclear Engineering Research Laboratory (UTNL)


UTTAC, Tandem Accelerator Center, University of Tsukuba
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  Nuclear Research Institutes

Central Research Institute of Electric Power Industry (CRIEPI)
The Central Research Institute of Electric Power Industry (CRIEPI) was founded in 1951 to serve as the comprehensive central research institution for the electric power industry. Since that time, CRIEPI has exercised the talents of its specialists in responding precisely to the business challenges that electric utilities face. At the same time, we undertake the general development of technologies in the quest for fundamental solutions to the many problems involved in global energy and resources, the environment, and sustainable economic development, as seen from a long-term perspective. In this way CRIEPI makes useful contributions both domestically and internationally through the advancement of the electric power industry.
language: English | Japanese
originator: university, laboratory or research organisation | industry or service provider
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type of data: textual information
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Japan Atomic Energy Agency (JAEA)
The Persistent Quest Home Page gives a good overview over the research activities at JAERI.
language: Japanese | English
originator: university, laboratory or research organisation
access: open to the general public
type of data: textual information
type of site: non-commercial site
related sites: english JAEA site | Persistent Quest Home Page


Japan Atomic Energy Agency (JAEA)
The Japan Nuclear Cycle Development Institute (JNC) was formally inaugurated on 1-October 1998; its Mission is to perform the development of the advanced technology required to establish the complete nuclear fuel cycle. JNC's Key Projects are those which form the basis of the fuel cycle, these are: the fast breeder reactor (FBR), advanced reprocessing, plutonium fuel fabrication and the disposal of high-level radioactive waste.


    * research and development for nuclear fuel cycle technology
    * fast reactor
    * plutonium fuel
    * reprocessing
    * radwaste

language: English | Japanese
originator: university, laboratory or research organisation
access: open to the general public
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type of site: non-commercial site
related sites: Latest News | MONJU prototype reactor | JAEA's Key Projects | JOYO Home Page


Japan Nuclear Fuel Limited (JNFL)
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originator: university, laboratory or research organisation | industry or service provider
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Japan Science and Technology Corporation (JST)


    * ReaD: Database of Research and Development Activities (free of charge)
    * access to a selection of other (paying) databases
    * host for STN Interantional bibliography (200+ databases)

language: Japanese | English
originator: data centre
access: open to the general public
type of data: textual information | numerical data, codes | bibliographic data
type of site: data base


JOYO Experimental Fast Reactor (JNC)
The experimental fast reactor JOYO achieved initial criticality in April 1977 as the first liquid metal fast breeder reactor in JAPAN. As a fuels and materials irradiation test facility, JOYO achieved the maximum design output of 100MWt in 1983, and thirty-two cycles of 100MWt rated power operation were successfully conducted until the end of March 1998. During this period, many irradiation tests for the development of fuels and materials were carried out.
language: English
originator: operator of nuclear plant or facility | university, laboratory or research organisation
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Kyoto University Research Reactor Institute (KURRI)
The KURRI (Kyoto University Research Reactor Institute) was reorganized in 1995 and is now composed of six research divisions and two facilities. On average, each division is composed of three laboratories. There are a total of twenty two laboratories including one laboratory provided for visiting professors.

The organization of the Institute consists of about eighty scientists, forty technical staff, and forty administrative members and clerks. The Advisory Board consists of members chosen from the scientists of both the Institute and other organizations.Its function is to provide advice to the Director on policies for cooperative research activities. It also receives and reviews cooperative research projects proposed by researchers of universities and research institutes.

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MONJU prototype reactor (JNC)
MONJU is the prototype reactor of the Japanese fast breeder reactor project. This English language site has been created to explain how fast reactors work, why Japan is committed to the development of this technology and how it can be used as a major contributor to electricity supply in the next century.
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related sites: Japan Nuclear Cycle Development Institute (JNC) | MONJU Plant - Basic Specifications


National Institute for Radiological Sciencies (NIRS)

    * established in 1957, as a special research institution attached to the Science and Technology Agency

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National Institute of of Advanced Industrial Science & Technology (AIST)


From April 1, 2001, the National Institute of Advanced Industrial Science and Technology (the new AIST) has begun operations. The AIST is a newborn research organization that is combined with 15 research institutes which are used to be under the former Agency of Industrial Science and Technology (the former AIST) in the Ministry of International Trade and Industry (Table 1 below) and The Weights and Measures Training Institute. The new AIST is the Japan's largest public research organizations with research facilities on scale, and around 3,200 employees including the authorities.
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Nuclear Engineering Research Laboratory, University of Tokyo (UTNL)
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Persistent Quest - Research Activities (JAERI)
Persistent Quest is published annually to introduce the most recent accomplishments of JAERI (Japan Atomic Energy Research Institute) on scientific and technical research to the general public. Its contents are focused on research topics which made outstanding progress in the year concerned.

    * Advanced Basic Research
    * Research and Development of Fusion Energy
    * Neutron Science and It's Applications
    * Research and Development of the Advanced Photon and Synchrotron Radiation Sources
    * Material Science
    * Research and Development on Radiation Applications
    * Computational Science
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  High Energy Research Institutes

Electrotechnical Laboratory (ETL)

    * Electron Linac Facility
    * NIJI-II, NIJI-IV, TERAS

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High Energy Accelerator Research Organization (KEK)


    * Photon Factory
    * TRISTAN Accumulation Ring

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Hiroshima Synchrotron Radiation Center (HSRC)
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Institute for Molecular Science (IMS)


    * Okazaki National Research Institute
    * Ultraviolet Synchrotron Orbital Radiation Facility (UVSOR )

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related sites: UVSOR


Japan Synchrotron Radiation Research Institute (JASRI)

    * third-generation synchrotron radiation facility: SPring-8
    * advanced research into materials science, earth science, life science, and medicine

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originator: university, laboratory or research organisation
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Nuclear Science Research Facility - Accelerator Laboratory Kyoto

    * accelerator physics
    * laser nuclear physics
    * 7 MeV proton Linac and a 100 MeV electron Linac

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originator: university, laboratory or research organisation
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RIKEN Accelerator Research Facility
This page is presented by RIKEN Accelerator Research Facility, a joint organization of Cyclotron Center, Accelerator User Group and RIBF Project Group.
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originator: university, laboratory or research organisation
access: free online access | open to the general public
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Sumitomo Electric (SEI) (more info) goto TOP


    * Harima Institute
    * compact synchrotron radiation ring: NIJI-III

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originator: university, laboratory or research organisation
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Synchrotron Radiation Laboratory (Univ. of Tokyo VSX Project )

    * Synchotron Radiation Facilities: VSX Light Source

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The Institute of Physical and Chemical Research (RIKEN)
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  Nuclear Fusion and Plasma Physics

International Thermonuclear Experimental Reactor (ITER)
ITER's mission is to demonstrate the scientific and technological feasibility of fusion energy for peaceful purposes. To do this, ITER will demonstrate extended energy production, demonstrate essential fusion energy technologies in an integrated system, and perform integrated testing of key elements required to use fusion as a practical energy source.


    * planned Superconducting Tokamak Fusion Test Reactor
    * international collaboration: Euratom, Japan, Russia, (USA)
    * ITER Newsletter: published monthly by the IAEA

language: English
originator: international organisation | university, laboratory or research organisation
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related sites: ITER Newsletter | IAEA | ITER Europe | Naka Fusion Research Establshment


Institute of Laser Engineering (Osaka University)
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JT-60 project (more info) goto TOP


    * JT-60/JT-60SA

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type of data: numerical data, codes | textual information | online journals, articles, reports
type of site: non-commercial site
related sites: Naka-JAEA Home Page | JAEA Home Page


Naka Fusion Research Establishment, Japan (JAEA) (more info) goto TOP


    * JT-60 Tokamak

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National Institute for Fusion Science (NIFS, Toki, Japan) 

    * LHD Stellarator

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  Application of Isotopes and Ionizing Radiation

Cyclotron and Radioisotope Center (Tohoku University) (more info) goto TOP
language: English | Japanese
originator: university, laboratory or research organisation
                                                                                                                                                                                                                                                                                       

http://www.eng.u-fukui.ac.jp/english/organizations/details/master.html

Nuclear Power and Energy Safety Engineering Course

The course provides practical and multilateral education and research concerning various issues, including assurance of safety in atomic power stations and areas where the stations are located, seeking convivial society systems, stabilization of power networks, and vitalization of local industries through technology transfer, as a university located in Fukui Prefecture where many atomic power stations are located. The objective of the course is to cultivate advanced professional engineers who have a thorough knowledge of safety engineering and configuration of regional symbiotic systems related to atomic power and energy and who also have wider vision and a high sense of ethics.
Divisions

    * Nuclear Power Safety Engineering
    * Regional and Environmental Symbiosis Engineering
    * Nuclear Power Plant Safety Engineering

http://www.npes.u-fukui.ac.jp/

Department of Applied Nuclear Technology  
Acquiring the skills to apply, develop and practice.

Nuclear power - used as a means to produce electricity it plays a fundamental role in our society. Japan’s relationship with nuclear power stretches back over 40 years. Now more than ever we need technicians trained in the use of nuclear power and in fact this institution is the only such one in the country to offer the particular course of study that we have here. Here at this university we seek to produce technologists who will go on to be experts in nuclear power and the correct and safe use of radioactive substances.
We are looking for the following kinds
of people with ambition:

   1. People who can keep to the rules, forward-looking
   2. People who are able to cooperate with others
   3. People who are passionate about future developments in nuclear power
   4. People who are creative and keen to experiment
   5. People who abound with curiosity and are ready to take on the challenge of discovery


http://www.fukui-ut.ac.jp/ut/english/subject/president.html#04

Japan's Big Science Takes Big Hit from Big Disasters

http://www.hpcwire.com/hpcwire/2011-03-21/japanese_science_takes_big_hit_from_earthquake.html

March 21, 2011
Japanese Science Takes Big Hit from Earthquake

excerpt (entire article at link above). 

One of the most affected centers is Tohoku University, which was near the epicenter of the quake in Sendai. The institution was one of Japan's preeminent materials science, engineering and biomedicine centers, but will be shut down until at least the end of April, according to a report from Nature News. Tohoku University is home to the Cyberscience Center, which houses a 31.2 teraflop system, but as of now, there are no updates about the status of the resource. As it stands, the university area is difficult to access due to dangerous aftershocks, and recovery efforts are being hindered by a lack of electricity and water.

Japan HE dominates QS's 'Asian Ranking' of Universities

Japanese universities dominate the entire Asian set, but only one Japanese university makes it into the top five--that is, University of Tokyo.

QS rankings are now independent of the THES rankings. This Asian rankings list makes for an interesting preview of the world rankings for 2011, which will come out later this year, in direct competition with THES's for our attention. One question that comes to mind is this: If University of Tokyo is number four in Asia, will it even make the top twenty of QS's world rankings?

http://www.topuniversities.com/university-rankings

http://www.topuniversities.com/university-rankings/asian-university-rankings/2011

Top Five Universities in Asia

Ranking University

1          The Hong Kong University of Science and Technology
2          University of Hong Kong
3          National University of Singapore (NUS)
4          The University of Tokyo
5          The Chinese University of Hong Kong

Japan tops supercomputer rankings (June 2011)

A supercomputer in Japan hasn't been number 1 since late 2004. Japan had even dropped out of the top 10 list for much of those 7 years. However, a supercomputer that Fujitsu built for Riken (a group of government-funded research institutions) recently put Japan back at the very top. US dominance of petaflop-level computing continues. However, China shows growing strength at supercomputers. This is now an era of PETAFLOP computing, with all top ten computers attaining that level of calculating power.  

http://www.top500.org/lists/2011/06/press-release

excerpt (entire article at link above)

Japan Reclaims Top Ranking on Latest TOP500 List of World’s Supercomputers
Thu, 2011-06-16 19:24


HAMBURG, Germany. A Japanese supercomputer capable of performing more than 8 quadrillion calculations per second (petaflop/s) is the new number one system in the world, putting Japan back in the top spot for the first time since the Earth Simulator was dethroned in November 2004, according to the latest edition of the TOP500 List of the world’s top supercomputers. The system, called the K Computer, is at the RIKEN Advanced Institute for Computational Science (AICS) in Kobe.
....
For the first time, all of the top 10 systems achieved petaflop/s performance-- and those are also the only petaflop/s systems on the list. The U.S. is tops in petaflop/s with five systems performing at that level; Japan and China have two each, and France has one.

Bumped to second place after capturing No. 1 on the previous list is the Tianhe-1A supercomputer the National Supercomputing Center in Tianjin, China, with a performance at 2.6 petaflop/s. Also moving down a notch was Jaguar, a Cray supercomputer at the U.S. Department of Energy’s (DOE’s) Oak Ridge National Laboratory, at No. 3 with 1.75 petaflop/s.



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