日本電子力研究所 Fusion Neutronics Source(FNS)におけるD-T中性子スカイシャイン実験 [in Japanese] D-T Neutron Skyshine Experiments at JAERI/FNS [in Japanese]
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- 西谷 健夫 NISHITANI Takeo
- 日本原子力研究所 Japan Atomic Energy Research Institute
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- 落合 謙太郎 OCHIAI Kentaro
- 日本原子力研究所 Japan Atomic Energy Research Institute
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- 吉田 茂生 [他] YOSHIDA Shigeo
- 東海大学 Tokai University
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- 田中 良平 TANAKA Ryohei
- 大阪大学 Osaka University
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- 脇坂 雅志 WAKISAKA Masashi
- 北海道大学 Hokkaido University
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- 中尾 誠 NAKAO Makoto
- 日本原子力研究所 Japan Atomic Energy Research Institute
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- 佐藤 聡 SATO Satoshi
- 日本原子力研究所 Japan Atomic Energy Research Institute
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- 山内 通則 YAMAUCHI Michinori
- 日本原子力研究所 Japan Atomic Energy Research Institute
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- 堀 順一 HORI Jun-ichi
- 日本原子力研究所 Japan Atomic Energy Research Institute
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- 高橋 亮人 TAKAHASHI Akito
- 大阪大学 Osaka University
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- 金子 純一 KANEKO Jun-ichi
- 北海道大学 Hokkaido University
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- 澤村 晃子 SAWAMURA Teruko
- 北海道大学 Hokkaido University
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Author(s)
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- 西谷 健夫 NISHITANI Takeo
- 日本原子力研究所 Japan Atomic Energy Research Institute
-
- 落合 謙太郎 OCHIAI Kentaro
- 日本原子力研究所 Japan Atomic Energy Research Institute
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- 吉田 茂生 [他] YOSHIDA Shigeo
- 東海大学 Tokai University
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- 田中 良平 TANAKA Ryohei
- 大阪大学 Osaka University
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- 脇坂 雅志 WAKISAKA Masashi
- 北海道大学 Hokkaido University
-
- 中尾 誠 NAKAO Makoto
- 日本原子力研究所 Japan Atomic Energy Research Institute
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- 佐藤 聡 SATO Satoshi
- 日本原子力研究所 Japan Atomic Energy Research Institute
-
- 山内 通則 YAMAUCHI Michinori
- 日本原子力研究所 Japan Atomic Energy Research Institute
-
- 堀 順一 HORI Jun-ichi
- 日本原子力研究所 Japan Atomic Energy Research Institute
-
- 高橋 亮人 TAKAHASHI Akito
- 大阪大学 Osaka University
-
- 金子 純一 KANEKO Jun-ichi
- 北海道大学 Hokkaido University
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- 澤村 晃子 SAWAMURA Teruko
- 北海道大学 Hokkaido University
Abstract
The D-T neutron skyshine experiments have been carried out at the Fusion Neutronics Source (FNS) of JAERI with the neutron yield of ∼1.7×10<SUP>11</SUP>n/s. The concrete thickness of the roof and the wall of a FNS target room are 1.15 and 2 m, respectively. The FNS skyshine port with a size of 0.9 × 0.9 m<SUP>2</SUP> was open during the experimental period.The radiation dose rate outside the target room was measured as far as about 550 m away from the D-T target point with a spherical rem-counter. The highest neutron dose was about 0.5 μSv/hr at a distance of 30 m from the D-T target point and the dose rate was attenuated to 0.002 μSv/hr at a distance of 550 m. The measured neutron dose distribution was analyzed with Monte Carlo code MCNP-4B and a simple line source model. The MCNP calculation overestimates the neutron dose in the distance range larger than 250 m. The neutron spectra were evaluated with a <SUP>3</SUP>He detector with different thickness of polyethylene neutron moderators. Secondary gamma-rays were measured with high purity Ge detectors and NaI scintillation detectors.
Journal
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- Journal of Plasma and Fusion Research
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Journal of Plasma and Fusion Research 79(3), 282-289, 2003-03-25
The Japan Society of Plasma Science and Nuclear Fusion Research
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