Shielding Assessment and Optimization of the Target Station for Medical Isotope Production Based on Superconducting Proton Linac
In response to the worldwide shortage of <sup>99m</sup>Tc supply caused by the combined consequence from both decommissioning and maintenance of research reactors worldwide, the Institute of Modern Physics (IMP) of the Chinese Academy of Science and Lanzhou University have launched a col...
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MDPI AG
2023-02-01
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| author | Daiyuan Chen Ricardo dos Santos Augusto Yuanhong Li Zhi Qin Jian Rong Kaiqiang Yao Huan Jia Chenzhang Yuan Juntao Liu Zhiyi Liu |
| author_facet | Daiyuan Chen Ricardo dos Santos Augusto Yuanhong Li Zhi Qin Jian Rong Kaiqiang Yao Huan Jia Chenzhang Yuan Juntao Liu Zhiyi Liu |
| author_sort | Daiyuan Chen |
| collection | DOAJ |
| description | In response to the worldwide shortage of <sup>99m</sup>Tc supply caused by the combined consequence from both decommissioning and maintenance of research reactors worldwide, the Institute of Modern Physics (IMP) of the Chinese Academy of Science and Lanzhou University have launched a collaboration to research and develop a <sup>99m</sup>Tc production solution based on the 25 MeV high-intensity superconducting proton linear accelerator. Radiation from high-current proton bombardment must be evaluated and considered carefully at the design stage to meet radiation protection (RP) policy and requirements of the shielding for the key device. This work employed FLUKA to conduct the shielding assessment of both prompt and residual radiation fields in several iterations, based on a prototype of the high-power target system. The prompt dose rates outside the target station are lower than the institution’s limit. The residual dose rates inside the station fall below 100 μSv/h at 64 h after the end of beam (EOB); the dominant source term is then the target chamber. The service life of the main actuator is expected to be extended by 2.7 times with the current partial shielding design. The simulation accelerating techniques are applied to balance the accuracy of results and the progress of the project at the same time, which is referential to the shielding assessment of large-scale nuclear facilities. The results can also be used in further study and construction of the target station. |
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| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T09:51:20Z |
| publishDate | 2023-02-01 |
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| series | Applied Sciences |
| spelling | doaj.art-aedf2536668a4e66974015c7a5c803c62023-11-16T16:13:12ZengMDPI AGApplied Sciences2076-34172023-02-01133198510.3390/app13031985Shielding Assessment and Optimization of the Target Station for Medical Isotope Production Based on Superconducting Proton LinacDaiyuan Chen0Ricardo dos Santos Augusto1Yuanhong Li2Zhi Qin3Jian Rong4Kaiqiang Yao5Huan Jia6Chenzhang Yuan7Juntao Liu8Zhiyi Liu9School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, ChinaEnvironment, Safety & Health Directorate, TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, CanadaSchool of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaSchool of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, ChinaSchool of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaSchool of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, ChinaSchool of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, ChinaIn response to the worldwide shortage of <sup>99m</sup>Tc supply caused by the combined consequence from both decommissioning and maintenance of research reactors worldwide, the Institute of Modern Physics (IMP) of the Chinese Academy of Science and Lanzhou University have launched a collaboration to research and develop a <sup>99m</sup>Tc production solution based on the 25 MeV high-intensity superconducting proton linear accelerator. Radiation from high-current proton bombardment must be evaluated and considered carefully at the design stage to meet radiation protection (RP) policy and requirements of the shielding for the key device. This work employed FLUKA to conduct the shielding assessment of both prompt and residual radiation fields in several iterations, based on a prototype of the high-power target system. The prompt dose rates outside the target station are lower than the institution’s limit. The residual dose rates inside the station fall below 100 μSv/h at 64 h after the end of beam (EOB); the dominant source term is then the target chamber. The service life of the main actuator is expected to be extended by 2.7 times with the current partial shielding design. The simulation accelerating techniques are applied to balance the accuracy of results and the progress of the project at the same time, which is referential to the shielding assessment of large-scale nuclear facilities. The results can also be used in further study and construction of the target station.https://www.mdpi.com/2076-3417/13/3/1985shieldingdosimetryFLUKAmedical isotope production |
| spellingShingle | Daiyuan Chen Ricardo dos Santos Augusto Yuanhong Li Zhi Qin Jian Rong Kaiqiang Yao Huan Jia Chenzhang Yuan Juntao Liu Zhiyi Liu Shielding Assessment and Optimization of the Target Station for Medical Isotope Production Based on Superconducting Proton Linac Applied Sciences shielding dosimetry FLUKA medical isotope production |
| title | Shielding Assessment and Optimization of the Target Station for Medical Isotope Production Based on Superconducting Proton Linac |
| title_full | Shielding Assessment and Optimization of the Target Station for Medical Isotope Production Based on Superconducting Proton Linac |
| title_fullStr | Shielding Assessment and Optimization of the Target Station for Medical Isotope Production Based on Superconducting Proton Linac |
| title_full_unstemmed | Shielding Assessment and Optimization of the Target Station for Medical Isotope Production Based on Superconducting Proton Linac |
| title_short | Shielding Assessment and Optimization of the Target Station for Medical Isotope Production Based on Superconducting Proton Linac |
| title_sort | shielding assessment and optimization of the target station for medical isotope production based on superconducting proton linac |
| topic | shielding dosimetry FLUKA medical isotope production |
| url | https://www.mdpi.com/2076-3417/13/3/1985 |
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