Study on induced radioactivity of China Spallation Neutron Source

WU Qing-Biao; WANG Qing-Bin; WU Jing-Min; MA Zhong-Jian

doi:10.1088/1674-1137/35/6/017

Chinese Physics C> 2011, Vol. 35> Issue(6) : 596-602 DOI: 10.1088/1674-1137/35/6/017

Study on induced radioactivity of China Spallation Neutron Source

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Abstract：
China Spallation Neutron Source (CSNS) is the first High Energy Intense Proton Accelerator planned to be constructed in China during the State Eleventh Five-Year Plan period, whose induced radioactivity is very important for occupational disease hazard assessment and environmental impact assessment. Adopting the FLUKA code, the authors have constructed a cylinder-tunnel geometric model and a line-source sampling physical model, deduced proper formulas to calculate air activation, and analyzed various issues with regard to the activation of different tunnel parts. The results show that the environmental impact resulting from induced activation is negligible, whereas the residual radiation in the tunnels has a great influence on maintenance personnel, so strict measures should be adopted.

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WU Qing-Biao, WANG Qing-Bin, WU Jing-Min and MA Zhong-Jian. Study on induced radioactivity of China Spallation Neutron Source[J]. Chinese Physics C, 2011, 35(6): 596-602. doi: 10.1088/1674-1137/35/6/017

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Received: 2010-08-30
Revised: 2010-10-19

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沈阳化工大学材料科学与工程学院沈阳 110142

Study on induced radioactivity of China Spallation Neutron Source

Received Date: 2010-08-30
Accepted Date: 2010-10-19
Available Online: 2011-06-05

Abstract: China Spallation Neutron Source (CSNS) is the first High Energy Intense Proton Accelerator planned to be constructed in China during the State Eleventh Five-Year Plan period, whose induced radioactivity is very important for occupational disease hazard assessment and environmental impact assessment. Adopting the FLUKA code, the authors have constructed a cylinder-tunnel geometric model and a line-source sampling physical model, deduced proper formulas to calculate air activation, and analyzed various issues with regard to the activation of different tunnel parts. The results show that the environmental impact resulting from induced activation is negligible, whereas the residual radiation in the tunnels has a great influence on maintenance personnel, so strict measures should be adopted.