抄録
The engineering validation of the IFMIF/EVEDA prototype accelerator, up to 9 MeV by supplying the deuteron beam of 125 mA, will be performed at the BA site in Rokkasho. A design of this area monitoring system, comprising of Si semiconductors and ionization chambers for covering wide energy spectrum of gamma-rays and 3He counters for neutrons, is now in progress. To establish an applicability of this monitoring system, photon and neutron energies have to be suppressed to the detector ranges of 1.5 MeV and 15 MeV, respectively. For this purpose, the reduction of neutron and photon energies throughout shield of water in a beam dump and concrete layer is evaluated by PHITS code, using the experimental data of neutron source spectra. In this article, a similar model using the beam dump structure and the position with a degree of leaning for concrete wall in the accelerator vault is used, and their energy reduction including the air is evaluated. It is found that the neutron and photon flux are decreased by 10 4-order by employing the local shields using concrete and polyethylene around beam dump, and the photon energy can be suppressed in the low energy.
| 元の言語 | 英語 |
|---|---|
| ページ（範囲） | 1235-1238 |
| ページ数 | 4 |
| ジャーナル | Fusion Engineering and Design |
| 巻 | 87 |
| 発行部数 | 7-8 |
| DOI | |
| 出版物ステータス | 出版済み - 8 1 2012 |
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All Science Journal Classification (ASJC) codes
- Civil and Structural Engineering
- Nuclear Energy and Engineering
- Materials Science(all)
- Mechanical Engineering
これを引用
Evaluation of gamma-ray and neutron energy for area monitoring system in the IFMIF/EVEDA accelerator building. / Takahashi, Hiroki; Maebara, Sunao; Sakaki, Hironao; Hirabayashi, Keiichi; Hidaka, Kosuke; Shigyo, Nobuhiro; Watanabe, Yukinobu; Sagara, Kenshi.
：: Fusion Engineering and Design, 巻 87, 番号 7-8, 01.08.2012, p. 1235-1238.研究成果: ジャーナルへの寄稿 › 記事
}
TY - JOUR
T1 - Evaluation of gamma-ray and neutron energy for area monitoring system in the IFMIF/EVEDA accelerator building
AU - Takahashi, Hiroki
AU - Maebara, Sunao
AU - Sakaki, Hironao
AU - Hirabayashi, Keiichi
AU - Hidaka, Kosuke
AU - Shigyo, Nobuhiro
AU - Watanabe, Yukinobu
AU - Sagara, Kenshi
PY - 2012/8/1
Y1 - 2012/8/1
N2 - The engineering validation of the IFMIF/EVEDA prototype accelerator, up to 9 MeV by supplying the deuteron beam of 125 mA, will be performed at the BA site in Rokkasho. A design of this area monitoring system, comprising of Si semiconductors and ionization chambers for covering wide energy spectrum of gamma-rays and 3He counters for neutrons, is now in progress. To establish an applicability of this monitoring system, photon and neutron energies have to be suppressed to the detector ranges of 1.5 MeV and 15 MeV, respectively. For this purpose, the reduction of neutron and photon energies throughout shield of water in a beam dump and concrete layer is evaluated by PHITS code, using the experimental data of neutron source spectra. In this article, a similar model using the beam dump structure and the position with a degree of leaning for concrete wall in the accelerator vault is used, and their energy reduction including the air is evaluated. It is found that the neutron and photon flux are decreased by 10 4-order by employing the local shields using concrete and polyethylene around beam dump, and the photon energy can be suppressed in the low energy.
AB - The engineering validation of the IFMIF/EVEDA prototype accelerator, up to 9 MeV by supplying the deuteron beam of 125 mA, will be performed at the BA site in Rokkasho. A design of this area monitoring system, comprising of Si semiconductors and ionization chambers for covering wide energy spectrum of gamma-rays and 3He counters for neutrons, is now in progress. To establish an applicability of this monitoring system, photon and neutron energies have to be suppressed to the detector ranges of 1.5 MeV and 15 MeV, respectively. For this purpose, the reduction of neutron and photon energies throughout shield of water in a beam dump and concrete layer is evaluated by PHITS code, using the experimental data of neutron source spectra. In this article, a similar model using the beam dump structure and the position with a degree of leaning for concrete wall in the accelerator vault is used, and their energy reduction including the air is evaluated. It is found that the neutron and photon flux are decreased by 10 4-order by employing the local shields using concrete and polyethylene around beam dump, and the photon energy can be suppressed in the low energy.
UR - http://www.scopus.com/inward/record.url?scp=84865748034&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84865748034&partnerID=8YFLogxK
U2 - 10.1016/j.fusengdes.2012.02.109
DO - 10.1016/j.fusengdes.2012.02.109
M3 - Article
AN - SCOPUS:84865748034
VL - 87
SP - 1235
EP - 1238
JO - Fusion Engineering and Design
JF - Fusion Engineering and Design
SN - 0920-3796
IS - 7-8
ER -