| Zhu Weiguo,Liang Jing,Hou Changsong,Lian Dexing,Zhang Zhen.Study on the optimization of radiation protection for therapeutic proton synchrotron[J].Chinese Journal of Radiological Medicine and Protection,2019,39(9):707-710 |
| Study on the optimization of radiation protection for therapeutic proton synchrotron |
| Received:March 04, 2019 |
| DOI：10.3760/cma.j.issn.0254-5098.2019.09.013 |
| KeyWords:Monte Carlo simulation Therapeutic proton accelerator Barrier Ambient dose equivalent rate |
| FundProject: |
| Author Name | Affiliation | E-mail | | Zhu Weiguo | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Liang Jing | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Hou Changsong | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Lian Dexing | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Zhang Zhen | National Center for Occupational Safety and Health, NHC, Beijing 102308, China | zhangzhen04@126.com |
|
| Hits: 3093 |
| Download times: 1426 |
| Abstract:: |
| Objective To investigate the effect of iron shield at different depths within main protection wall on the dose rate outside the protection wall. Methods By adopting the FLUKA code, a therapeutic room model was constructed with its primary protective barrier consisting of concrete and iron. In order to obtain its ambient dose equivalent rate distribution, the 250 MeV protons and 220 MeV protons impinging on water phantom were simulated separately. Results With varying depth of iron plate embedded in barrier, the ambient dose equivalent rates in the two simulated conditions differed sinificantly at 30 cm outside the protection wall. The maximum ambient dose equivalent rate(220 MeV:3.42 μSv/h, 250 MeV:6.39 μSv/h) was more than 2 times higher than the minimum ambient dose equivalent rate(220 MeV:1.75 μSv/h, 250 MeV:3.32 μSv/h). Conclusions In the design of therapeutic proton accelerator, it is essential to evaluate carefully the location where the iron shield is in main protection wall. |
| HTML View Full Text View/Add Comment Download reader |
| Close |
|
|
|
