Measurement of the neutron shielding efficacy of magnetite for Proton Therapy Facilities and other applications
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arXiv
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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866917462300164096 |
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| author | Park, Kijun Keppel, Cynthia Ambrozewicz, Pawel Wright, Kenneth Kosinski, Michael |
| author_facet | Park, Kijun Keppel, Cynthia Ambrozewicz, Pawel Wright, Kenneth Kosinski, Michael |
| contents | The neutron shielding properties of high-density concrete and magnetite aggregates were evaluated using both experimental measurements and Monte Carlo simulations. Because these materials are commonly used in medical accelerator facilities, it is essential to characterize their behavior under neutron radiation to ensure adequate shielding performance. Our experimental results show good agreement with the Monte Carlo calculations, confirming the reliability of the simulation approach. The attenuated neutron doses for various shielding thicknesses were determined for each aggregate type based on simulation and then compared as dose ratios. The findings indicate that magnetite provides superior neutron shielding, exhibiting a shorter attenuation length than conventional concrete for the same barrier thickness. The neutron attenuation characteristics of both concrete and magnetite were studied for typical neutron spectra encountered in clinical proton-therapy accelerators, including treatment rooms, primary, secondary barriers, and mazes. These results can support the optimization of radiation-shielding designs in medical and research facilities. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_03931 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Measurement of the neutron shielding efficacy of magnetite for Proton Therapy Facilities and other applications Park, Kijun Keppel, Cynthia Ambrozewicz, Pawel Wright, Kenneth Kosinski, Michael Medical Physics Nuclear Experiment The neutron shielding properties of high-density concrete and magnetite aggregates were evaluated using both experimental measurements and Monte Carlo simulations. Because these materials are commonly used in medical accelerator facilities, it is essential to characterize their behavior under neutron radiation to ensure adequate shielding performance. Our experimental results show good agreement with the Monte Carlo calculations, confirming the reliability of the simulation approach. The attenuated neutron doses for various shielding thicknesses were determined for each aggregate type based on simulation and then compared as dose ratios. The findings indicate that magnetite provides superior neutron shielding, exhibiting a shorter attenuation length than conventional concrete for the same barrier thickness. The neutron attenuation characteristics of both concrete and magnetite were studied for typical neutron spectra encountered in clinical proton-therapy accelerators, including treatment rooms, primary, secondary barriers, and mazes. These results can support the optimization of radiation-shielding designs in medical and research facilities. |
| title | Measurement of the neutron shielding efficacy of magnetite for Proton Therapy Facilities and other applications |
| topic | Medical Physics Nuclear Experiment |
| url | https://arxiv.org/abs/2605.03931 |