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Journal Articles

First flight demonstration of film-laminated InGaP/GaAs and CIGS thin-film solar cells by JAXA's small satellite in LEO

Morioka, Chiharu*; Shimazaki, Kazunori*; Kawakita, Shiro*; Imaizumi, Mitsuru*; Yamaguchi, Hiroshi*; Takamoto, Tatsuya*; Sato, Shinichiro; Oshima, Takeshi; Nakamura, Yosuke*; Hirako, Keiichi*; et al.

Progress in Photovoltaics; Research and Applications, 19(7), p.825 - 833, 2011/11

 Times Cited Count:15 Percentile:39.87(Energy & Fuels)

Journal Articles

Observational construction and behavior measurements for underground research shaft excavation of the Horonobe Underground Research Laboratory project

Yamazaki, Masanao; Morioka, Hiroshi*; Hatsuyama, Yoshihiro*; Tsusaka, Kimikazu

Dai-12-Kai Iwa No Rikigaku Kokunai Shimpojiumu Koen Rombunshu (CD-ROM), p.305 - 310, 2008/09

The underground research shafts and drifts have been constructed in Horonobe by JAEA. The observational construction program to reflect the various data obtained by the shaft excavation for designing and construction was setted on and is being presently applied. The support design was carried out by numerical analysis considering the excavating liberaring power according to the excavation progress. But, it was clear that measurement data of lining stress in G.L.-121m included the influence of extra lining thickness and excavation of drifts in G.L.-140m. We report on the outline of the observational construction program and the result of analyzing the measurement data of the lining stress.

Journal Articles

Development of engineering technology for sedimentary rock in "Horonobe URL Project", Japan

Hatanaka, Koichiro; Morioka, Hiroshi*; Fukushima, Tatsuo

Proceedings of 2008 International High-Level Radioactive Waste Management Conference (IHLRWM 2008) (CD-ROM), p.250 - 257, 2008/09

In this paper, the procedure for planning design/construction of the underground facilities developed in Phase I of Horonobe URL project, and current status of the actual construction in Phase II based on the design and relevant engineering technology developed in Phase I are briefly described.

JAEA Reports

Support design of underground facilities in the Horonobe Underground Research Laboratory project

Morioka, Hiroshi*; Yamazaki, Masanao; Matsui, Hiroya; Orukawa, Go*; Yamaguchi, Takehiro

JAEA-Research 2008-009, 263 Pages, 2008/07

JAEA-Research-2008-009.pdf:32.63MB

On the "Development of engineering techniques for use in the deep underground environment" in Phase 1, based on the various type of data acquired on investigations from the surface, basic design of underground facilities in advance was carried out. This report summarizes the support design of underground facilities carried out in 2004.

Journal Articles

Development of 300$$^{circ}$$C heat resistant boron-loaded resin for neutron shielding

Morioka, Atsuhiko; Sakurai, Shinji; Okuno, Koichi*; Sato, Satoshi; Verzirov, Y. M.; Kaminaga, Atsushi; Nishitani, Takeo; Tamai, Hiroshi; Shibama, Yusuke; Yoshida, Shigeru*; et al.

Journal of Nuclear Materials, 367-370(2), p.1085 - 1089, 2007/08

 Times Cited Count:20 Percentile:17.59(Materials Science, Multidisciplinary)

A 300$$^{circ}$$C heat-resistant neutron shielding material is newly developed, which consists of phenol-based resin with 6 weight-% boron. The neutron shielding performance of the developed resin, examined by the $$^{252}$$Cf neutron source, is almost the same as that of the polyethylene. The neutron shielding characteristic was also estimated by 3D Monte Carlo Code MCNP-4C2 using the continuous energy cross section data sets based on the JENDL-3.2. The calculation result agrees well with the experimental result. To understand the kinds of the outgas from the developed resin in the high temperature region, the mass spectrum of the outgas was measured until $$sim$$300$$^{circ}$$C by Thermal Desorption Specroscopy (TDS). The observed mass number was 2, 17, 18, 28, 32, and 44. The number corresponds to hydrogen (H$$_{2}$$), ammonia (NH$$_{3}$$), water (H$$_{2}$$O), carbon monoxide (CO), oxygen (O$$_{2}$$), carbon dioxide (CO$$_{2}$$), respectively. The main outgas component from the resin at 100$$sim$$150$$^{circ}$$C was NH $$_{3}$$ and H$$_{2}$$O. The outgas of NH$$_{3}$$ and H$$_{2}$$O from the resin have been measured, however, the neutron shielding performance of the resin after 200$$^{circ}$$C baking was almost the same as that before baking. The quantitative analysis of the outgas from the resin in the high temperature region was done by the Temperature Programmed Desorption (TPD) / Gas Chromatography and Mass spectrometry (GC/MS). The 13 kinds of organic gases have been observed by the amount of $$mu$$g/g at 300$$^{circ}$$C. The neutron shielding performance of the developed resin at 300$$^{circ}$$C was simulated by the 3D analysis. The resonance cross section of the nucleus is broad at the high temperature region by the Doppler effect. The calculation results using 327$$^{circ}$$C library and 20$$^{circ}$$C library are almost same.

JAEA Reports

Measurement plan and observational construction program on shaft excavation at the Horonobe Underground Research Laboratory Project

Morioka, Hiroshi; Yamaguchi, Takehiro; Funaki, Hironori; Orukawa, Go

JAEA-Research 2007-050, 60 Pages, 2007/06

JAEA-Research-2007-050.pdf:5.29MB

JAEA is carrying out phased investigation in Horonobe. This investigation, named as "Horonobe Underground Research Laboratory Project" (Horonobe URL Project) targeting sedimentary formations, is intended to confirm the reliability of technologies on geological disposal of High-Level Radioactive Waste (HLW) by applying them into in-situ geological environment. On the "Development of engineering techniques for use in the deep underground environment" in Phase 1 of the Horonobe URL project, based on the various type of data acquired on investigations from the surface, basic design of underground facilities in advance was carried out. This report summarizes the measurement plan during construction of the underground facility based on the design in advance and the observational construction program for feedback measurements data into design and construction on subsequent steps. This report also describes about design and construction management program for contractor of underground facilities. The measurement plan described in this document is applied to measurements in the underground facilities for validation of the geological environmental model. Then, it will be verified the validity by application into actual construction and will be systematized with modification when necessary.

Journal Articles

Horonobe URL project; Present status and future plans

Matsui, Hiroya; Kurikami, Hiroshi; Kunimaru, Takanori; Morioka, Hiroshi; Hatanaka, Koichiro

Rock Mechanics; Meeting Society's Challenges and Demands, p.1193 - 1201, 2007/05

JAEA is developing two off-site underground research laboratory projects: one in sedimentary rock (Horonobe, Hokkaido) and the other in crystalline rock (Mizunami, Gifu) in Japan. Horonobe's URL project consists of three major phases: (1) surface-based investigation (Phase I); (2) construction (Phase II); and, (3) operation (Phase III). At present, Phase II has been started. In parallel, predictions of potential changes in the geological environment prevailing around the URL are in progress. This paper mainly gives an overview of the technical aspects covered by Phase I as well as presents the design for the URL. Future plans after Phase II are briefly introduced as well.

JAEA Reports

Horonobe Underground Research Laboratory project synthesis of phase I investigations 2001-2005 volume "Geoscientific Research"

Ota, Kunio; Abe, Hironobu; Yamaguchi, Takehiro; Kunimaru, Takanori; Ishii, Eiichi; Kurikami, Hiroshi; Tomura, Goji; Shibano, Kazunori; Hama, Katsuhiro; Matsui, Hiroya; et al.

JAEA-Research 2007-044, 434 Pages, 2007/03

JAEA-Research-2007-044.pdf:54.58MB
JAEA-Research-2007-044(errata).pdf:0.08MB

The Horonobe URL Project started in 2000. Research and development activities are planned over three phases, that will span a total duration of about 20 years: the 1st surface-based investigarion phase (6 years), the 2nd URL construction phase (8 years) and rhe 3rd operation phase (12 years). Geological, geophysical, geo-mechanical, hydrogeological, and hydro-geochemical investigations have been carried out during the surface-based investigation.

Journal Articles

Overview of national centralized tokamak program; Mission, design and strategy to contribute ITER and DEMO

Ninomiya, Hiromasa; Akiba, Masato; Fujii, Tsuneyuki; Fujita, Takaaki; Fujiwara, Masami*; Hamamatsu, Kiyotaka; Hayashi, Nobuhiko; Hosogane, Nobuyuki; Ikeda, Yoshitaka; Inoue, Nobuyuki; et al.

Journal of the Korean Physical Society, 49, p.S428 - S432, 2006/12

To contribute DEMO and ITER, the design to modify the present JT-60U into superconducting coil machine, named National Centralized Tokamak (NCT), is being progressed under nationwide collaborations in Japan. Mission, design and strategy of this NCT program is summarized.

Journal Articles

Outline on construction of the underground facility in Horonobe URL project

Morioka, Hiroshi; Matsui, Hiroya

Doboku Gakkai Gamban Rikigaku Iinkai Nyuzu Reta (Internet), (11), 8 Pages, 2006/11

None

Journal Articles

The Construction plan of the Horonobe Underground Research Laboratory

Seya, Masami; Morioka, Hiroshi; Fukushima, Tatsuo

Sato Kogyo Gijutsu Kenkyushoho, (31), p.57 - 62, 2006/11

Japan Atomic Energy Agency is constructing a deep underground research laboratory at Horonobe-cho, Hokkaido. In this report, the outline of the construction plan of the Horonobe Underground Research Laboratory, treatment of muck and groundwater produced by the construction as environmental point of view, and observational method and disaster control as security are introduced.

Journal Articles

Seismic performance verification of support for underground research shafts and drifts of Horonobe Underground Research Laboratory Project

Orukawa, Go; Morioka, Hiroshi; Nishiyama, Seiji*

Dai-41-Kai Jiban Kogaku Kenkyu Happyokai Happyo Koenshu, p.1739 - 1740, 2006/07

no abstracts in English

Journal Articles

Outline and support design for underground research shafts and drifts of Horonobe Underground Research Laboratory Project

Orukawa, Go; Morioka, Hiroshi; Yamakami, Mitsunori; Murakawa, Shiro*

Denryoku Doboku, (324), p.82 - 86, 2006/07

no abstracts in English

Journal Articles

Poloidal field coil configuration and plasma shaping capability in NCT

Matsukawa, Makoto; Tamai, Hiroshi; Fujita, Takaaki; Kizu, Kaname; Sakurai, Shinji; Tsuchiya, Katsuhiko; Kurita, Genichi; Morioka, Atsuhiko; Ando, Toshinari; Miura, Yushi

IEEE Transactions on Applied Superconductivity, 16(2), p.914 - 917, 2006/06

 Times Cited Count:4 Percentile:68.89(Engineering, Electrical & Electronic)

no abstracts in English

Journal Articles

Overview of the national centralized tokamak programme

Kikuchi, Mitsuru; Tamai, Hiroshi; Matsukawa, Makoto; Fujita, Takaaki; Takase, Yuichi*; Sakurai, Shinji; Kizu, Kaname; Tsuchiya, Katsuhiko; Kurita, Genichi; Morioka, Atsuhiko; et al.

Nuclear Fusion, 46(3), p.S29 - S38, 2006/03

 Times Cited Count:13 Percentile:53.91(Physics, Fluids & Plasmas)

The National Centralized Tokamak (NCT) facility program is a domestic research program for advanced tokamak research to succeed JT-60U incorporating Japanese university accomplishments. The mission of NCT is to establish high beta steady-state operation for DEMO and to contribute to ITER. The machine flexibility and mobility is pursued in aspect ratio and shape controllability, feedback control of resistive wall modes, wide current and pressure profile control capability for the demonstration of the high-b steady state.

Journal Articles

Engineering design and control scenario for steady-state high-beta operation in national centralized tokamak

Tsuchiya, Katsuhiko; Akiba, Masato; Azechi, Hiroshi*; Fujii, Tsuneyuki; Fujita, Takaaki; Fujiwara, Masami*; Hamamatsu, Kiyotaka; Hashizume, Hidetoshi*; Hayashi, Nobuhiko; Horiike, Hiroshi*; et al.

Fusion Engineering and Design, 81(8-14), p.1599 - 1605, 2006/02

 Times Cited Count:1 Percentile:89.21(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Design study of national centralized tokamak facility for the demonstration of steady state high-$$beta$$ plasma operation

Tamai, Hiroshi; Akiba, Masato; Azechi, Hiroshi*; Fujita, Takaaki; Hamamatsu, Kiyotaka; Hashizume, Hidetoshi*; Hayashi, Nobuhiko; Horiike, Hiroshi*; Hosogane, Nobuyuki; Ichimura, Makoto*; et al.

Nuclear Fusion, 45(12), p.1676 - 1683, 2005/12

 Times Cited Count:15 Percentile:50.45(Physics, Fluids & Plasmas)

Design studies are shown on the National Centralized Tokamak facility. The machine design is carried out to investigate the capability for the flexibility in aspect ratio and shape controllability for the demonstration of the high-beta steady state operation with nation-wide collaboration, in parallel with ITER towards DEMO. Two designs are proposed and assessed with respect to the physics requirements such as confinement, stability, current drive, divertor, and energetic particle confinement. The operation range in the aspect ratio and the plasma shape is widely enhanced in consistent with the sufficient divertor pumping. Evaluations of the plasma performance towards the determination of machine design are presented.

Journal Articles

Development of a heat-resistant neutron shielding resin for the national centralized tokamak

Morioka, Atsuhiko; Sakurai, Shinji; Okuno, Koichi*; Tamai, Hiroshi

Purazuma, Kaku Yugo Gakkai-Shi, 81(9), p.645 - 646, 2005/09

A 300 $$^{circ}$$C heat-resistant neutron shielding material is newly developed, which consists of phenol-based resin with 5 weight-% boron. The neutron shielding performance of the developed resin, examined by the $$^{252}$$Cf neutron source, is almost the same as that of the polyethylene. The resin is applicable to the port section of vacuum vessel of the DD plasma device to suppress the streaming neutrons and to reduce the nuclear heating of the superconducting coils.

JAEA Reports

Report of Horonobe technical review meetings (FY 2004); 1st to 4th meetings (Document on present state of affairs)

Shirato, Nobuaki*; Matsui, Hiroya; Morioka, Hiroshi; Hatanaka, Koichiro; Takeuchi, Ryuji; Hatakeyama, Nobuya; Ohara, Hidefumi; Nakajima, Takahiro; Kunitomo, Takahiro

JNC-TN5440 2005-001, 412 Pages, 2005/06

JNC-TN5440-2005-001.pdf:20.87MB

We held Horonobe technical review meeting 4 times a year. The first meeting is for the plan of Horonobe underground research laboratory and others. The secound meeting is for geology of Horonobe area and modeling study and data acquisition for safety assessment methodology and others. The third meeting is for ventilation network analyses on URL plan. The fourth meeting is for the remote monitoring system using ACROSS. This report is records of these meetings.

JAEA Reports

International Workshop on Horonobe Underground Research Laboratory Prooject / Record (Research Document)

Yamasaki, Shinichi; Matsui, Hiroya; Hama, Katsuhiro; Morioka, Hiroshi; Hatanaka, Koichiro; Fukushima, Tatsuo; SEYA, Masami

JNC-TN5400 2004-005, 181 Pages, 2004/12

JNC-TN5400-2004-005.pdf:49.9MB
JNC-TN5400-2004-005(errata).pdf:0.08MB

This report includes the records for the international workshop on Hornobe Underground Research Laboratory Project. Abstracts, Slides for Presentation, and so on.

35 (Records 1-20 displayed on this page)