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Journal Articles

Status quo of the injector for the IFMIF/EVEDA prototype accelerator

Shinto, Katsuhiro; Ichikawa, Masahiro; Takahashi, Yasuyuki*; Kubo, Takashi*; Tsutsumi, Kazuyoshi; Kikuchi, Takayuki; Kasugai, Atsushi; Sugimoto, Masayoshi; Gobin, R.*; Girardot, P.*; et al.

Proceedings of 11th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.1009 - 1012, 2014/10

The prototype accelerator is being developed as an engineering validation for the International Fusion Materials Irradiation Facility (IFMIF) equipped with an accelerator-driven-type neutron source for developing fusion reactor materials. This prototype accelerator is a deuteron linear accelerator consisting of an injector, an RFQ, a superconducting linac and their auxiliaries. It aims to produce a CW D$$^+$$ beam with the energy and current of 9 MeV/125 mA. The injector test was completed at CEA/Saclay in 2012 for producing a CW H$$^+$$ beam and a CW D$$^+$$ beam with the energy and current of 100 keV/140 mA. After the beam test at CEA/Saclay, the injector was transported to the International Fusion Energy Research Centre (IFERC) located in Rokkasho, Aomori, Japan. In the end of 2013, installation of the injector was started at IFERC for the injector beam test beginning from summer 2014 in order to obtain better beam qualities to be satisfied with the injection and acceleration of the following accelerators. In this paper, some results of the injector beam test performed at CEA/Saclay and the status quo of the installation of the injector at IFERC are presented.

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:164 Percentile:99.44(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:8 Percentile:51.82(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

Applicability examination and evaluation of reactor dismantlement technology in the Fugen; Examination of double tubes cutting by abrasive water jet

Nakamura, Yasuyuki; Kikuchi, Koichi; Morishita, Yoshitsugu; Usui, Tatsuo*; Ogane, Daisuke*

Proceedings of 14th International Conference on Nuclear Engineering (ICONE-14) (CD-ROM), 9 Pages, 2006/07

It is necessary to clarify the dismantlement method of 224 double tubes arranging both pressure and calandria tubes concentrically in the reactor as a peculiar problem of Fugen, in the case of phased dismantlement of the reactor. The machine type cutting is desirable, considering the influence on the atmospheres because the double tubes consist of the zirconium alloy and zircalloy material radio activated highly. Besides, Cutting method has long standoff to cut the double tubes at a time for to be short the term of dismantlement. is desirable. Therefore, it was examined to confirm the applicability to the double tubes cutting by abrasive water jet (hereinafter referred to as AWJ) as the machine type cutting method that can take the standoff comparatively longer. As a result, We confirmed for possibility of cutting the double tubes at a time from inside and outside tube, and cutting thick slab by abrasive water jet. Besides, We confirmed for relationship of abrasive supply and cutting velocity, properties of secondly waste.

Journal Articles

Progress in physics and technology developments for the modification of JT-60

Tamai, Hiroshi; Matsukawa, Makoto; Kurita, Genichi; Hayashi, Nobuhiko; Urata, Kazuhiro*; Miura, Yushi; Kizu, Kaname; Tsuchiya, Katsuhiko; Morioka, Atsuhiko; Kudo, Yusuke; et al.

Plasma Science and Technology, 6(1), p.2141 - 2150, 2004/02

 Times Cited Count:2 Percentile:6.67(Physics, Fluids & Plasmas)

The dominant issue for the the modification program of JT-60 (JT-60SC) is to demonstrate the steady state reactor relevant plasma operation. Physics design on plasma parameters, operation scenarios, and the plasma control method are investigated for the achievement of high-$$beta$$. Engineering design and the R&D on the superconducting magnet coils, radiation shield, and vacuum vessel are performed. Recent progress in such physics and technology developments is presented.

Journal Articles

Objectives and design of the JT-60 superconducting tokamak

Ishida, Shinichi; Abe, Katsunori*; Ando, Akira*; Chujo, T.*; Fujii, Tsuneyuki; Fujita, Takaaki; Goto, Seiichi*; Hanada, Kazuaki*; Hatayama, Akiyoshi*; Hino, Tomoaki*; et al.

Nuclear Fusion, 43(7), p.606 - 613, 2003/07

no abstracts in English

Journal Articles

Objectives and design of the JT-60 superconducting tokamak

Ishida, Shinichi; Abe, Katsunori*; Ando, Akira*; Cho, T.*; Fujii, Tsuneyuki; Fujita, Takaaki; Goto, Seiichi*; Hanada, Kazuaki*; Hatayama, Akiyoshi*; Hino, Tomoaki*; et al.

Nuclear Fusion, 43(7), p.606 - 613, 2003/07

 Times Cited Count:33 Percentile:70.69(Physics, Fluids & Plasmas)

no abstracts in English

JAEA Reports

Evaluation of Resonance Parameters of Mo,Tc,Te,Ba,La,Ce,Pr,Nd,Pm,Sm and Eu Isotopes for JENDL-2 Fission Product File

Kikuchi, Yasuyuki; ; Nakagawa, Tsuneo

JAERI-M 86-030, 235 Pages, 1986/03

JAERI-M-86-030.pdf:6.36MB

no abstracts in English

JAEA Reports

Sensitivity Coefficients of Reactor Parmeters in Fast Critical Assemblies and Uncertainty Analysis

*; *; *; ; Kikuchi, Yasuyuki

JAERI-M 86-004, 91 Pages, 1986/02

JAERI-M-86-004.pdf:2.18MB

no abstracts in English

JAEA Reports

Evaluation of Neutron Nuclear Data for $$^{2}$$$$^{4}$$$$^{9}$$Bk and $$^{2}$$$$^{4}$$$$^{9}$$Cf

Kikuchi, Yasuyuki; Nakagawa, Tsuneo

JAERI-M 85-138, 89 Pages, 1985/09

JAERI-M-85-138.pdf:3.12MB

no abstracts in English

JAEA Reports

Evaluation of Neutron Nuclear Data of Natural Nickel and its Isotopes for JENDL-2

Kikuchi, Yasuyuki; *

JAERI-M 85-101, 195 Pages, 1985/07

JAERI-M-85-101.pdf:3.69MB

no abstracts in English

JAEA Reports

Japanese Contributions to IAEA INTOR Workshop,Phase Two A,Part 2; Chapter X:Nuclear

; ; *; ; *; Kikuchi, Yasuyuki; ; ; *; *; et al.

JAERI-M 85-082, 352 Pages, 1985/07

JAERI-M-85-082.pdf:6.6MB

no abstracts in English

Journal Articles

Second version of Japanese evaluated nuclear data library,JENDL-2

Kikuchi, Yasuyuki; Nakagawa, Tsuneo; Asami, Tetsuo; *; *; *

Journal of Nuclear Science and Technology, 22(8), p.593 - 603, 1985/00

 Times Cited Count:13 Percentile:47.95(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Evaluation of neutron nuclear data of chromium,iron and nickel for fusion neutronics application

Kikuchi, Yasuyuki; Shibata, Keiichi; Asami, Tetsuo; ; *; *

Journal of Nuclear Science and Technology, 22(6), p.499 - 503, 1985/00

 Times Cited Count:3 Percentile:53.49(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Evaluation of neutron nuclear data of natural nickel and its isotopes

Kikuchi, Yasuyuki; *

Journal of Nuclear Science and Technology, 22(5), p.337 - 357, 1985/00

 Times Cited Count:5 Percentile:60.42(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

Evaluation of Neutron Nuclear Data for $$^{2}$$$$^{4}$$$$^{8}$$Cm and $$^{2}$$$$^{4}$$$$^{9}$$Cm

Kikuchi, Yasuyuki; Nakagawa, Tsuneo

JAERI-M 84-116, 66 Pages, 1984/06

JAERI-M-84-116.pdf:2.15MB

no abstracts in English

JAEA Reports

Evaluation of Neutron Nuclear Data of $$^{2}$$$$^{4}$$$$^{1}$$Pu for JENDL-2

Kikuchi, Yasuyuki; *

JAERI-M 84-111, 97 Pages, 1984/06

JAERI-M-84-111.pdf:3.18MB

no abstracts in English

JAEA Reports

SAGEP:Two-Dimensional Sensitivity Analysis Code Based on Generaliged Perturbation Theery

*; *; Kikuchi, Yasuyuki

JAERI-M 84-027, 31 Pages, 1984/02

JAERI-M-84-027.pdf:0.66MB

no abstracts in English

JAEA Reports

Evaluation of Neutron Nuclear Data for $$^{2}$$$$^{4}$$$$^{6}$$Cm and $$^{2}$$$$^{4}$$$$^{7}$$Cm

Kikuchi, Yasuyuki

JAERI-M 83-236, 81 Pages, 1984/01

JAERI-M-83-236.pdf:2.09MB

no abstracts in English

Journal Articles

Report on the second version of Japanese evaluated nuclear data library JENDL-2

Igarashi, Shinichi; Asami, Tetsuo; Kikuchi, Yasuyuki; Nakagawa, Tsuneo; Narita, Tsutomu; Shibata, Keiichi

Nihon Genshiryoku Gakkai-Shi, 26(3), p.191 - 198, 1984/00

 Times Cited Count:3 Percentile:38.53(Nuclear Science & Technology)

no abstracts in English

53 (Records 1-20 displayed on this page)