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Journal Articles

Tree planting plan in J-PARC; The Measure for preservation and reproduction

Yamanishi, Takeshi; Seshimo, Kazuyoshi; Kitami, Takayuki; Tan, Sakyo*

Nihon Ryokka Kogakkai-Shi, 32(1), p.191 - 194, 2006/08

no abstracts in English

Journal Articles

Method of restoring forest by spraying black pine seeds in J-PARC

Yamanishi, Takeshi; Seshimo, Kazuyoshi; Kitami, Takayuki; Naruse, Hideo; Tan, Sakyo*

Nihon Ryokka Kogakkai-Shi, 30(1), p.227 - 230, 2004/08

Large-scale pine woods is deforested before the High-Intensity Proton Accelerator facilities construction in the Japan Atomic Energy Research Institute Tokai Research Establishment. Spraying the black pine seeds by spraying as an trial method of planting for the restoration of this forest.

Journal Articles

A Study on induced activity in the low-activationized concrete for J-PARC

Matsuda, Norihiro; Nakashima, Hiroshi; Kasugai, Yoshimi; Sasamoto, Nobuo*; Kinno, Masaharu*; Kitami, Takayuki; Ichimura, Takahito; Hori, Junichi*; Ochiai, Kentaro; Nishitani, Takeo

Journal of Nuclear Science and Technology, 41(Suppl.4), p.74 - 77, 2004/03

In high power proton accelerator facilities, concrete shield can be highly activated, which makes maintenance work quite difficult. So, a low-activationized concrete (limestone concrete) is to be partially adopted as a concrete shield for Japan Proton Accelerator Research Complex (J-PARC) aiming at reducing $$gamma$$-ray exposure dose during maintenance period. A new quantity, $$^{24}$$Na-equivalent, was introduced as a criterion to assure effectiveness of the low-activationized concrete. In order of its verification, powdered low-activationized concrete and ordinary one were irradiated using FNS at JAERI. The measurements were analyzed by a shielding design code system being used for J-PARC, showing that the calculations reproduce the measured induced activity within a factor of 2. Furthermore, by using the same code system, $$gamma$$-ray exposure dose was calculated for the configuration of J-PARC to find out that $$gamma$$-ray exposure dose by the low-activationized concrete was about 10 times lower than that by the ordinary concrete in a period of less than a few days after operation.

Journal Articles

Progress of environmental sampling program at Japan Atomic Energy Research Institute

Nishimura, Hideo; Magara, Masaaki; Hanzawa, Yukiko; Esaka, Fumitaka; Takahashi, Tsukasa; Gunji, Katsubumi; Miyamoto, Yutaka; Yasuda, Kenichiro; Tsuruta, Yasuhiro; Tsuda, Shinji; et al.

Heisei 11-Nendo Hosho Sochi Semina Koenroku Tekisuto, p.95 - 107, 2000/01

no abstracts in English

JAEA Reports

Investigation of water content in primary upper shield of High Temperature Engineering Test Reactor (HTTR)

Sumita, Junya; Sawa, Kazuhiro; Mogi, Haruyoshi; ; Kitami, Takayuki; Akutsu, Yoichi; *; *; *

JAERI-Research 99-054, p.41 - 0, 1999/09

JAERI-Research-99-054.pdf:1.19MB

no abstracts in English

Oral presentation

Density control of heavy concrete work in J-PARC

Kubo, Takashi; Kitami, Takayuki; Itabashi, Hideharu; Horiguchi, Takashi; Ichimura, Takahito

no journal, , 

no abstracts in English

Oral presentation

Density changing experiment by placing conditions for normal concrete radiation shield

Horiguchi, Takashi; Kitami, Takayuki; Itabashi, Hideharu; Ichimura, Takahito; Kubo, Takashi

no journal, , 

no abstracts in English

Oral presentation

Influence of ground motion to the Lineac tunnel, 1; Seismometry

Ichimura, Takahito; Kitami, Takayuki; Horiguchi, Takashi; Kawama, Itsuo*

no journal, , 

no abstracts in English

Oral presentation

Influence of ground motion to the Lineac tunnel, 2; Seismic response analysis

Kawama, Itsuo*; Ichimura, Takahito; Kitami, Takayuki; Horiguchi, Takashi; Aoki, Yusuke*

no journal, , 

no abstracts in English

Oral presentation

Influence of ground motion to the linac tunnel, 3; Long-period strong ground motion

Yoshimura, Aya*; Ichimura, Takahito; Kitami, Takayuki; Horiguchi, Takashi; Kawama, Itsuo*; Ouchi, Hajime*; Tsunokake, Hisao*

no journal, , 

no abstracts in English

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