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Journal Articles

Estimation of the lifetime of resin insulators against baking temperature for JT-60SA in-vessel coils

Sukegawa, Atsuhiko; Murakami, Haruyuki; Matsunaga, Go; Sakurai, Shinji; Takechi, Manabu; Yoshida, Kiyoshi; Ikeda, Yoshitaka

Fusion Engineering and Design, 98-99, p.2076 - 2079, 2015/10

 Times Cited Count:1 Percentile:81.41(Nuclear Science & Technology)

The JT-60SA project is a EU - JA satellite tokamak under Broader Approach in support of the ITER project. In-vessel coils are designed and assembled by JA. The resin-insulator is required to have a heat resistance against the baking temperature of vacuum vessel of $$sim$$200$$^{circ}$$C (40000 hour). Thus the assessment of the heat load is fundamental for the design of the coils. However, the estimation of the lifetime of resin-insulator under the high-temperature region has not been examined. In the present study, the estimation of the lifetime of seven candidate resin-insulators such as epoxy resin and cyanate-ester resin under the $$sim$$220$$^{circ}$$C temperature region have been performed for the current coils design. Weight reduction of the seven candidate insulators was measured at different heating times under 180$$^{circ}$$C, 200$$^{circ}$$C and 220$$^{circ}$$C environment using three thermostatic ovens, respectively. The reduction of the insulators has been used as input for Weibull-analysis towards Arrhenius-plot. Lifetime of the resins has been estimated for the first time at the high temperature region by the plot. Lifetime of the resin-insulators have been evaluated and discussed as well as the available temperature of the in-vessel coils.

Journal Articles

JT-60SA superconducting magnet system

Koide, Yoshihiko; Yoshida, Kiyoshi; Wanner, M.*; Barabaschi, P.*; Cucchiaro, A.*; Davis, S.*; Decool, P.*; Di Pietro, E.*; Disset, G.*; Genini, L.*; et al.

Nuclear Fusion, 55(8), p.086001_1 - 086001_7, 2015/08

 Times Cited Count:17 Percentile:11.94(Physics, Fluids & Plasmas)

The most distinctive feature of the superconducting magnet system for JT-60SA is the optimized coil structure in terms of the space utilization as well as the highly accurate coil manufacturing, thus meeting the requirements for the steady-state tokamak research: A conceptually new outer inter-coil structure separated from the casing is introduced to the toroidal field coils to realize their slender shape, allowing large-bore diagnostic ports for detailed plasma measurements. A method to minimize the manufacturing error of the equilibrium-field coils has been established, aiming at the precise plasma shape/position control. A compact butt-joint has been successfully developed for the Central Solenoid, which allows an optimized utilization of the limited space for the Central Solenoid to extend the duration of the plasma pulse.

Journal Articles

Grey literature in the internet era; Focusing on change in the definition of grey literature and Pisa Declaration on policy development for grey literature resources

Ikeda, Kiyoshi

Joho Kanri, 58(3), p.193 - 203, 2015/06

In this article, the author introduces the definition of grey literature based on discussed by the International Conference on Grey Literature and the Pisa Declaration on Policy Development for Grey Literature Resources ("Pisa Declaration"). After this, in relation to the definition of grey literature, the current status and issues of grey literature in the digital are described. Finally, the article introduces current trends on grey literature, particularly the Pisa Declaration in 2014.

Journal Articles

Enhancement of the functions of the Japan Atomic Energy Agency Library's Fukushima Nuclear Accident Archive using a novel data flagging system that improves the utilization of numerical data on the internet

Ikeda, Kiyoshi; Gonda, Mayuki; Nagaya, Shun; Hayakawa, Misa; Kunii, Katsuhiko; Mineo, Yukinobu; Yonezawa, Minoru; Itabashi, Keizo

Proceedings of 16th International Conference on Grey Literature (GL-16), p.139 - 145, 2015/03

The Japan Atomic Energy Agency (JAEA) Library has collected Internet information related the Fukushima Accident. We previously reported the development of the Fukushima Accident Archive using the DSpace in 15th International Conference on Grey Literature. We have encountered a new challenging issue grey literature. In many cases, Internet information contains valuable numerical data. However, it is difficult to identify the existence of numerical data in the Internet sites because numerical data is not often organized in a systematic manner on the web sites. We considered such method as to identify numerical data and attempted to introduce "data flagging" system, which was previously used in the International Atomic Energy Agency's International Nuclear Information System (INIS). In this presentation, we will introduce our "data flagging" system for numerical data on the Internet and how we apply the system to our Fukushima Accident Archive.

Journal Articles

Present status of J-PARC linac

Oguri, Hidetomo; Hasegawa, Kazuo; Ito, Takashi; Chishiro, Etsuji; Hirano, Koichiro; Morishita, Takatoshi; Shinozaki, Shinichi; Ao, Hiroyuki; Okoshi, Kiyonori; Kondo, Yasuhiro; et al.

Proceedings of 11th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.389 - 393, 2014/10

no abstracts in English

Journal Articles

Road to archiving of information relating to the Fukushima Nuclear Accident by the Japan Atomic Energy Agency Library

Gonda, Mayuki; Ikeda, Kiyoshi; Nagaya, Shun

Joho No Kagaku to Gijutsu, 64(9), p.357 - 360, 2014/09

AA2014-0228.pdf:2.08MB

We introduce post-Great East Japan Earthquake situation of the Japan Atomic Energy Agency Library and our efforts to distribute information about the TEPCO Fukushima Daiichi Nuclear Power Station Accident. After that, we describe our activities about the archiving of information relating to the Fukushima Nuclear Accident and its feature.

Journal Articles

Contribution to the improvement of dissemination of grey literature; JAEA Library's efforts for collecting, organizing and disseminating information on nuclear accidents

Ikeda, Kiyoshi; Oshima, Takeshi; Gonda, Mayuki; Nagaya, Shun; Hayakawa, Misa; Mineo, Yukinobu; Yonezawa, Minoru; Itabashi, Keizo

Proceedings of 15th International Conference on Grey Literature (GL-15), p.41 - 47, 2014/03

The Japan Atomic Energy Agency (JAEA) Library has collected information on the 3.11 accident from various sources and websites and then disseminated it over the Internet. However, there are some unresolved issues in terms of permanent accessibility to information and the lack of bibliographical control. We contribute to the improvement of the dissemination of grey literature by creating the metadata and organizing it with classification. We have created more than 4,000 metadata of the website's information concerning TEPCO's "photo and video collection," and more than 3,000 metadata of the Ministry of Economy, Trade and Industry (METI) of Japan's "press release". We have also created metadata of presentations at the meetings of the Atomic Energy Society of Japan (AESJ), held in September 2012 and March 2013.

Journal Articles

Contribution to the improvement of dissemination of grey literature; JAEA Library's efforts for collecting, organizing and disseminating information on nuclear accidents

Ikeda, Kiyoshi; Oshima, Takeshi; Gonda, Mayuki; Nagaya, Shun; Hayakawa, Misa; Mineo, Yukinobu; Yonezawa, Minoru; Itabashi, Keizo

The Grey Journal; An International Journal on Grey Literature, 10(1), p.7 - 13, 2014/00

In March 2011, the Fukushima Daiichi Nuclear Power Station Accident occurred in Japan. After the accident, parts of information on the accident has been distributed as grey literature and they cause some issues in terms of permanent accessibility to the information. This paper introduces the activity of the Japan Atomic Energy Agency Library as an example of efforts to improve access of Internet information using the DSpace. Consequently, we contributed to the improvement of the dissemination of grey literature at the following three points; (1)to ensure permanent access to Internet information by cooperating with the National Diet Library's Web archiving project, (2) to develop standardized metadata schema and classification system, (3)to develop prototype system using DSpace and compile about 36,000 metadata.

Journal Articles

Study for development of the Fukushima Dai-ichi Nuclear Power Station accident archive

Nakajima, Hidemitsu; Ikeda, Kiyoshi; Yonezawa, Minoru; Itabashi, Keizo; Kiriyama, Eriko*; Iwata, Shuichi*

Joho Chishiki Gakkai-Shi, 22(4), p.344 - 353, 2012/11

BB2012-1951.pdf:2.04MB

The Library of Japan Atomic Energy Agency (JAEA) has developed the special website on Fukushima Dai-ichi Nuclear Power Station accident from April 4, 2011. This website is provided both in Japanese and English. It disseminates over 15,000 bibliographic and full-text records, such as JAEA's research results, academic journal articles, conference papers, technical reports etc. In this paper, the authors introduce the special website on Fukushima Dai-ichi Nuclear Power Station accident and discuss some challenging issues to develop archive.

Journal Articles

Introduction of useful bibliographies and resources related to the Fukushima Dai-ichi Nuclear Power Station accident through the JAEA Library

Ikeda, Kiyoshi; Yonezawa, Minoru; Nakajima, Hidemitsu

Nippon Genshiryoku Gakkai-Shi, 54(8), p.549 - 553, 2012/08

no abstracts in English

Journal Articles

Overview; Rethinking the grey literature's definition

Ikeda, Kiyoshi

Joho No Kagaku to Gijutsu, 62(2), p.50 - 54, 2012/02

AA2011-0802.pdf:0.41MB

Grey literature said to do difficult to obtain through commercial publishers. Recently, according to the spread of institutional repositories, grey literature is published on the Web and its full text is open to the public, then it has become easily accessible. Yet, the accessibility of gray literature has not been fully resolved. In this paper, the author introduces the definition of grey literature based on the discussion of the International Conference on Grey Literature (International Conference on Grey literature) and tries to reorganize and discuss on issues concerning the problems of grey literature accessibility. The author indicates that there are still many challenges in this field, also indicates that stable access to the sources on the Web is not always guaranteed. It is concluded that expertises and experiences of a librarian should be leveraged to get solutions regarding the accessibility of grey literature.

Journal Articles

Current and future states from the perspective of "Bulletin of Japan Special Libraries Association"

Ikeda, Kiyoshi

LISN, (150), p.8 - 9, 2011/12

no abstracts in English

Journal Articles

INIS-based Japanese literature materials of bibliographic tools for human resource development

Kunii, Katsuhiko; Gonda, Mayuki; Ikeda, Kiyoshi; Nagaya, Shun; Itabashi, Keizo; Nakajima, Hidemitsu; Mineo, Yukinobu

Proceedings of International Conference on Toward and Over the Fukushima Daiichi Accident (GLOBAL 2011) (CD-ROM), 8 Pages, 2011/12

The Library of the Japan Atomic Energy Agency (JAEA) has developed two Japanese literature materials of bibliographic tools based on the International Nuclear Information System (INIS) of the IAEA which contains over 3.3 million records of 127 countries and 24 international organizations. These materials have been elaborated by appropriately designating Japanese terminology of nuclear field corresponding with English terminology or vice versa. One is "Transliterated Japanese journal title list" and the other is "INIS Thesaurus in Japanese". While the former is served as a reference that enables users to access articles of Japanese journals better matching their needs, the latter is served as a dictionary to bridge the gap on nuclear field terminologies between over 30,000 English terms and Japanese terms which correspond with those in a semantic manner. The application of those materials to the INIS's full text collection over 280,000 of technical reports, proceedings etc. as an archive is helpful for enhancement of human resource development. The authors describe the effectiveness of those INIS-based materials with bibliographic references of Fukushima Daiichi NPS accident.

Journal Articles

What's about "application document for the Permission of Reactor Installment License"

Ikeda, Kiyoshi; Yonezawa, Minoru

Senmon Toshokan, (250), p.35 - 42, 2011/11

AA2011-0510.pdf:1.41MB

no abstracts in English

Journal Articles

Identified charged hadron production in $$p + p$$ collisions at $$sqrt{s}$$ = 200 and 62.4 GeV

Adare, A.*; Afanasiev, S.*; Aidala, C.*; Ajitanand, N. N.*; Akiba, Yasuyuki*; Al-Bataineh, H.*; Alexander, J.*; Aoki, Kazuya*; Aphecetche, L.*; Armendariz, R.*; et al.

Physical Review C, 83(6), p.064903_1 - 064903_29, 2011/06

 Times Cited Count:114 Percentile:0.77(Physics, Nuclear)

Transverse momentum distributions and yields for $$pi^{pm}, K^{pm}, p$$, and ($bar{p}$) in $$p + p$$ collisions at $$sqrt{s}$$ = 200 and 62.4 GeV at midrapidity are measured by the PHENIX experiment at the RHIC. We present the inverse slope parameter, mean transverse momentum, and yield per unit rapidity at each energy, and compare them to other measurements at different $$sqrt{s}$$ collisions. We also present the scaling properties such as $$m_T$$ and $$x_T$$ scaling and discuss the mechanism of the particle production in $$p + p$$ collisions. The measured spectra are compared to next-to-leading order perturbative QCD calculations.

Journal Articles

Azimuthal correlations of electrons from heavy-flavor decay with hadrons in $$p+p$$ and Au+Au collisions at $$sqrt{s_{NN}}$$ = 200 GeV

Adare, A.*; Afanasiev, S.*; Aidala, C.*; Ajitanand, N. N.*; Akiba, Yasuyuki*; Al-Bataineh, H.*; Alexander, J.*; Aoki, Kazuya*; Aphecetche, L.*; Aramaki, Y.*; et al.

Physical Review C, 83(4), p.044912_1 - 044912_16, 2011/04

 Times Cited Count:7 Percentile:46.07(Physics, Nuclear)

Measurements of electrons from the decay of open-heavy-flavor mesons have shown that the yields are suppressed in Au+Au collisions compared to expectations from binary-scaled $$p+p$$ collisions. Here we extend these studies to two particle correlations where one particle is an electron from the decay of a heavy flavor meson and the other is a charged hadron from either the decay of the heavy meson or from jet fragmentation. These measurements provide more detailed information about the interaction between heavy quarks and the quark-gluon matter. We find the away-side-jet shape and yield to be modified in Au+Au collisions compared to $$p+p$$ collisions.

Journal Articles

Measurement of neutral mesons in $$p$$ + $$p$$ collisions at $$sqrt{s}$$ = 200 GeV and scaling properties of hadron production

Adare, A.*; Afanasiev, S.*; Aidala, C.*; Ajitanand, N. N.*; Akiba, Y.*; Al-Bataineh, H.*; Alexander, J.*; Aoki, K.*; Aphecetche, L.*; Armendariz, R.*; et al.

Physical Review D, 83(5), p.052004_1 - 052004_26, 2011/03

 Times Cited Count:120 Percentile:1.41(Astronomy & Astrophysics)

The PHENIX experiment at RHIC has measured the invariant differential cross section for production of $$K^0_s$$, $$omega$$, $$eta'$$ and $$phi$$ mesons in $$p + p$$ collisions at $$sqrt{s}$$ = 200 GeV. The spectral shapes of all hadron transverse momentum distributions are well described by a Tsallis distribution functional form with only two parameters, $$n$$ and $$T$$, determining the high $$p_T$$ and characterizing the low $$p_T$$ regions for the spectra, respectively. The integrated invariant cross sections calculated from the fitted distributions are found to be consistent with existing measurements and with statistical model predictions.

Journal Articles

Report of the 2nd International Conference of Asian Special Libraries (ICoASL 2011)

Ikeda, Kiyoshi

Senmon Toshokan, (246), p.61 - 66, 2011/03

no abstracts in English

Journal Articles

Circulation improvement of articles in journals written in non-english languages; A Special journal titles translation list of journals written in Japanese for the international bibliographical database

Gonda, Mayuki; Kunii, Katsuhiko; Nakajima, Hidemitsu; Ikeda, Kiyoshi; Itabashi, Keizo; Koike, Akemi*; Igarashi, Ayumi*

Proceedings of 12th International Conference on Grey Literature (GL-12), p.113 - 117, 2011/00

Circulation of scientific information improves internationally today, and English which is "universal language" takes the leading part for scientific communication. On the other hand, non-English articles are still "gray literatures" due to language barriers though physical circulation improves as well as English articles. In the International Nuclear Information System (INIS) database operated by the International Atomic Energy Agency (IAEA), bibliographic information such as title and abstract etc. is written in English. This feature of the INIS database contributes to international circulation of scientific information of the nuclear field. However, titles of journals written by non-English language were described by transliterated Roman alphabet, non-native users cannot understand natures and subjects of journals written by non-English language. Non-native users cannot understand the nature of the journal with this journal title description, and then they fail to get the useful article. This language barrier should be broken through as soon as possible for circulation improvement of journals written by non-English language. So we develop a special journal titles translation list of journals written in Japanese for the INIS database, as attempt to improve circulation of articles in journals written by non-English language. We will release this list on the INIS database for circulation improvement of journals written by non-English language, and we will implement the list into the database for user's convenience in the future.

Journal Articles

76 (Records 1-20 displayed on this page)