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Journal Articles

IRDFF-II; A New neutron metrology library

Trkov, A.*; Griffin, P. J.*; Simakov, S. P.*; Greenwood, L. R.*; Zolotarev, K. I.*; Capote, R.*; Aldama, D. L.*; Chechev, V.*; Destouches, C.*; Kahler, A. C.*; et al.

Nuclear Data Sheets, 163, p.1 - 108, 2020/01

 Times Cited Count:91 Percentile:99.77(Physics, Nuclear)

The version II of the International Reactor Dosimetry and Fusion File (IRDFF-II) has been released as a consistent set of nuclear data for fission and fusion neutron metrology applications up to 60 MeV neutron energy. The library is intended to support: (a) applications in research reactors; (b) safety and regulatory applications in the nuclear power generation in commercial fission reactors; and c) material damage studies in support of the research and development of advanced fusion concepts. The paper describes the contents of the library, documents the thorough verification process used in its preparation, and provides an extensive set of validation data gathered from a wide range of neutron benchmark fields. The new library is expected to become the international reference in neutron metrology for multiple applications.

Journal Articles

Nuclear analyses for ITER NB system

Sato, Satoshi; Ochiai, Kentaro; Konno, Chikara; Morota, Hidetsugu*; Nasif, H.*; Tanaka, Masanobu*; Polunovskiy, E.*; Loughlin, M.*

Proceedings of 24th IAEA Fusion Energy Conference (FEC 2012) (CD-ROM), 8 Pages, 2013/03

Detailed nuclear analyses for the latest ITER NB system are required to ensure that NB design conforms to the nuclear regulations for the ITER building and licensing. A variety of nuclear analyses was started for ITER NB system including a tokamak building of 50m $$times$$ 35m $$times$$ 20m and outside the building by using a Monte Carlo code MCNP in 2009. MCNP geometry input data were successfully produced from simplified NB CAD data with the improved GEOMIT code, which automatically converts CAD data to MCNP geometry input data. We have performed calculations of the effective dose rates during DT operation and after shutdown, and activation of the NB components, etc.

Journal Articles

Event structure and double helicity asymmetry in jet production from polarized $$p + p$$ collisions at $$sqrt{s}$$ = 200 GeV

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, 84(1), p.012006_1 - 012006_18, 2011/07

 Times Cited Count:29 Percentile:72.31(Astronomy & Astrophysics)

We report on the event structure and double helicity asymmetry ($$A_{LL}$$) of jet production in longitudinally polarized $$p + p$$ collisions at $$sqrt{s}$$ = 200 GeV. Photons and charged particles were measured by the PHENIX experiment. Event structure was compared with the results from PYTHIA event generator. The production rate of reconstructed jets is satisfactorily reproduced with the next-to-leading-order perturbative QCD calculation. We measured $$A_{LL}$$ = -0.0014 $$pm$$ 0.0037 at the lowest $$P_T$$ bin and -0.0181 $$pm$$ 0.0282 at the highest $$P_T$$ bin. The measured $$A_{LL}$$ is compared with the predictions that assume various $$Delta G(x)$$ distributions.

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:184 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:49.7(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:175 Percentile:98.48(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

ITER nuclear analysis strategy and requirements

Loughlin, M. J.*; Batistoni, P.*; Konno, Chikara; Fischer, U.*; Iida, Hiromasa; Petrizzi, L.*; Polunovskiy, E.*; Sawan, M.*; Wilson, P.*; Wu, Y.*

Fusion Science and Technology, 56(2), p.566 - 572, 2009/08

 Times Cited Count:42 Percentile:92.56(Nuclear Science & Technology)

It is envisaged that ITER should produce as much as 700 MW of fusion power. This equates to the production of 2.48$$times$$10$$^{20}$$ 14MeV neutrons/s which will give an uncollided flux at the first wall of approximately 4$$times$$10$$^{13}$$ n/cm$$^{2}$$/s and a total with the addition of the collided to some 10$$^{14}$$ n/cm$$^{2}$$/s. ITER is therefore a significant nuclear facility and it is essential that an efficient and coherent strategy for nuclear analysis is in place. This paper reviews the status of the methods applied to date and recommends the future strategy which ITER should adopt to address the continuing requirements and responsibilities. This is done by consideration of the application of radiation transport codes, the creation of suitable models, developments in information technology, and the management tools which will be required. Areas in which new codes and techniques need to be developed will be identified.

JAEA Reports

A Study of existing experimental data and validation process for evaluated high energy nuclear data; Report of task force on integral test for JENDEL high energy file in japanese nuclear data committee

Oyama, Yukio; *; Watanabe, Yukinobu*; Kawano, Toshihiko*; Numajiri, M.*; Ueki, Kotaro*; *; Yamano, Naoki*; Kosako, Kazuaki*; *; et al.

JAERI-Review 98-020, 130 Pages, 1998/11

JAERI-Review-98-020.pdf:6.4MB

no abstracts in English

Journal Articles

Benchmark experiment on vanadium-alloy assembly with D-T neutrons; In-situ measurement

Maekawa, Fujio; Kasugai, Yoshimi; Konno, Chikara; Wada, Masayuki*; Oyama, Yukio; Ikeda, Yujiro; R.Johnson*; E.T.Cheng*; M.Pillon*; Murata, Isao*; et al.

Fusion Technology, 34(3), p.1018 - 1022, 1998/11

no abstracts in English

Journal Articles

Nuclear heating measurements for SS-316, copper, graphite, tungsten, chromium, beryllium in a copper centered assembly bombarded with 14 MeV neutrons and analysis

Ikeda, Yujiro; Maekawa, Fujio; Kasugai, Yoshimi; Uno, Yoshitomo; A.Kumar*; M.Z.Youssef*; M.A.Abdou*; Konno, Chikara; Wada, Masayuki*

Fusion Engineering and Design, 42, p.289 - 297, 1998/00

 Times Cited Count:6 Percentile:49.22(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Integral experiment of induced radioactivity in D-T fusion neutron environment and validation of activation cross section library

Kasugai, Yoshimi; Ikeda, Yujiro; Maekawa, Fujio; Konno, Chikara; Wada, Masayuki*; Uno, Yoshitomo; A.Kumar*; M.Z.Youssef*; M.A.Abdou*

Fusion Engineering and Design, 42, p.299 - 305, 1998/00

 Times Cited Count:8 Percentile:57.28(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Benchmark experiment on bulk shield of SS316/water with simulated superconducting magnet

Konno, Chikara; Maekawa, Fujio; Oyama, Yukio; Wada, Masayuki*; Ikeda, Yujiro; Maekawa, Hiroshi; Kasugai, Yoshimi; M.Z.Youssef*; A.Kumar*; M.A.Abdou*

Fusion Engineering and Design, 42, p.267 - 273, 1998/00

 Times Cited Count:2 Percentile:24.49(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Validity assessment of shielding design tools for ITER through analysis of benchmark experiment on SS316/water shield conducted at FNS/JAERI

Maekawa, Fujio; Konno, Chikara; Oyama, Yukio; Ikeda, Yujiro; Wada, Masayuki*; Uno, Yoshitomo; Y.M.Verzilov*; Maekawa, Hiroshi

Fusion Technology, 30(3(PT.2B)), p.1081 - 1087, 1996/12

no abstracts in English

Journal Articles

Summary of benchmark experiments for simulation of fusion reactors using an annular blanket with a line deuterium-tritium source

Maekawa, Hiroshi; M.A.Abdou*; Oyama, Yukio; Konno, Chikara; Maekawa, Fujio; Ikeda, Yujiro; Kosako, Kazuaki*; Nakamura, Tomoo; M.Z.Youssef*; A.Kumar*; et al.

Fusion Technology, 28(2), p.296 - 304, 1995/09

no abstracts in English

Journal Articles

Neutronics integral experiments of annular blanket system simulating tokamak reactor configuration

Konno, Chikara; Oyama, Yukio; Maekawa, Fujio; Ikeda, Yujiro; Kosako, Kazuaki*; Maekawa, Hiroshi; M.A.Abdou*; Bennett, E. F.*; A.Kumar*; M.Z.Youssef*

Fusion Technology, 28(2), p.347 - 365, 1995/09

no abstracts in English

Journal Articles

Neutronics integral experiments of simulated fusion reactor blanket with various beryllium configurations using Deuterium-tritium neutrons

Konno, Chikara; Oyama, Yukio; Ikeda, Yujiro; ; ; Kosako, Kazuaki*; Maekawa, Hiroshi; Nakakawa, Masayuki; Mori, Takamasa; Nakamura, Tomoo; et al.

Fusion Technology, 28(2), p.273 - 295, 1995/09

no abstracts in English

Journal Articles

Concept and characteristics of a simulated line source for annular blanket experiments using an accelerator-based deuterium-tritium neutron source

Oyama, Yukio; Konno, Chikara; Ikeda, Yujiro; Kosako, Kazuaki*; Maekawa, Hiroshi; Nakamura, Tomoo; M.A.Abdou*; Bennett, E. F.*; A.Kumar*; *; et al.

Fusion Technology, 28(2), p.305 - 319, 1995/09

no abstracts in English

Journal Articles

Characteristics of a deuterium-tritium fusion source on a rotating target used in simulated fusion blanket experiments

Nakakawa, Masayuki; Mori, Takamasa; Kosako, Kazuaki*; Oyama, Yukio; Ikeda, Yujiro; Konno, Chikara; Maekawa, Hiroshi; *; M.A.Abdou*; Bennett, E. F.*; et al.

Fusion Technology, 28, p.39 - 55, 1995/08

no abstracts in English

Journal Articles

Design and techniques for fusion blanket neutronics experiments using an accelerator-based deuterium-tritium neutron source

Oyama, Yukio; Konno, Chikara; Ikeda, Yujiro; Maekawa, Fujio; Maekawa, Hiroshi; ; ; Nakamura, Tomoo; M.A.Abdou*; Bennett, E. F.*; et al.

Fusion Technology, 28(1), p.56 - 73, 1995/08

no abstracts in English

Journal Articles

Neutronics integral experiments of lithium-oxide fusion blanket with heterogeneous configurations using deuterium-tritium neutrons

Oyama, Yukio; Konno, Chikara; Ikeda, Yujiro; ; ; Kosako, Kazuaki*; Maekawa, Hiroshi; Nakakawa, Masayuki; Mori, Takamasa; Nakamura, Tomoo; et al.

Fusion Technology, 28(1), p.216 - 235, 1995/08

no abstracts in English

35 (Records 1-20 displayed on this page)