The neutron dose equivalent around high energy medical electron linear accelerators
The measurement of neutron dose equivalent was made in four dual energy linear accelerator rooms. Two of the rooms were reconstructed after decommissioning of 60Co units, so the main limitation was the space. The measurements were performed by a nuclear track etched detectors LR-115 asso...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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VINCA Institute of Nuclear Sciences
2014-01-01
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| Series: | Nuclear Technology and Radiation Protection |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1451-3994/2014/1451-39941403207P.pdf |
| _version_ | 1818494413614088192 |
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| author | Poje Marina Ivković Ana Jurković Slaven Žauhar Gordana Vuković Branko Radolić Vanja Miklavčić Igor Kaliman Zoran Planinić Josip Brkić Hrvoje Faj Dario |
| author_facet | Poje Marina Ivković Ana Jurković Slaven Žauhar Gordana Vuković Branko Radolić Vanja Miklavčić Igor Kaliman Zoran Planinić Josip Brkić Hrvoje Faj Dario |
| author_sort | Poje Marina |
| collection | DOAJ |
| description | The measurement of neutron dose equivalent was made in four dual energy
linear accelerator rooms. Two of the rooms were reconstructed after
decommissioning of 60Co units, so the main limitation was the space. The
measurements were performed by a nuclear track etched detectors LR-115
associated with the converter (radiator) that consist of 10B and with the
active neutron detector Thermo BIOREM FHT 742. The detectors were set at
several locations to evaluate the neutron ambient dose equivalent and/or
neutron dose rate to which medical personnel could be exposed. Also, the
neutron dose dependence on collimator aperture was analyzed. The obtained
neutron dose rates outside the accelerator rooms were several times smaller
than the neutron dose rates inside the accelerator rooms. Nevertheless, the
measured neutron dose equivalent was not negligible from the aspect of the
personal dosimetry with almost 2 mSv a year per person in the areas occupied
by staff (conservative estimation). In rooms with 15 MV accelerators, the
neutron exposure to the personnel was significantly lower than in the rooms
having 18 MV accelerators installed. It was even more pronounced in the room
reconstructed after the 60Co decommissioning. This study confirms that
shielding from the neutron radiation should be considered when building
vaults for high energy linear accelerators, especially when the space
constraints exist. |
| first_indexed | 2024-12-10T18:05:53Z |
| format | Article |
| id | doaj.art-4b954aafb3994d8da0d0d7a5b7de5f57 |
| institution | Directory Open Access Journal |
| issn | 1451-3994 |
| language | English |
| last_indexed | 2024-12-10T18:05:53Z |
| publishDate | 2014-01-01 |
| publisher | VINCA Institute of Nuclear Sciences |
| record_format | Article |
| series | Nuclear Technology and Radiation Protection |
| spelling | doaj.art-4b954aafb3994d8da0d0d7a5b7de5f572022-12-22T01:38:37ZengVINCA Institute of Nuclear SciencesNuclear Technology and Radiation Protection1451-39942014-01-0129320721210.2298/NTRP1403207P1451-39941403207PThe neutron dose equivalent around high energy medical electron linear acceleratorsPoje Marina0Ivković Ana1Jurković Slaven2Žauhar Gordana3Vuković Branko4Radolić Vanja5Miklavčić Igor6Kaliman Zoran7Planinić Josip8Brkić Hrvoje9Faj Dario10University Josip Juraj Strossmayer, Department of Physics, Osijek, CroatiaUniversity Hospital Centre of Osijek, Osijek, CroatiaUniversity Hospital Rijeka, Medical Physics Department, Rijeka, CroatiaUniversity of Rijeka, Faculty of Medicine, Department of Physics, Rijeka, CroatiaUniversity Josip Juraj Strossmayer, Department of Physics, Osijek, CroatiaUniversity Josip Juraj Strossmayer, Department of Physics, Osijek, CroatiaUniversity Josip Juraj Strossmayer, Department of Physics, Osijek, CroatiaUniversity of Rijeka, Department of Physics, Rijeka, CroatiaUniversity Josip Juraj Strossmayer, Department of Physics, Osijek, CroatiaUniversity of Osijek, Faculty of Medicine, Osijek, CroatiaUniversity of Osijek, Faculty of Medicine, Osijek, CroatiaThe measurement of neutron dose equivalent was made in four dual energy linear accelerator rooms. Two of the rooms were reconstructed after decommissioning of 60Co units, so the main limitation was the space. The measurements were performed by a nuclear track etched detectors LR-115 associated with the converter (radiator) that consist of 10B and with the active neutron detector Thermo BIOREM FHT 742. The detectors were set at several locations to evaluate the neutron ambient dose equivalent and/or neutron dose rate to which medical personnel could be exposed. Also, the neutron dose dependence on collimator aperture was analyzed. The obtained neutron dose rates outside the accelerator rooms were several times smaller than the neutron dose rates inside the accelerator rooms. Nevertheless, the measured neutron dose equivalent was not negligible from the aspect of the personal dosimetry with almost 2 mSv a year per person in the areas occupied by staff (conservative estimation). In rooms with 15 MV accelerators, the neutron exposure to the personnel was significantly lower than in the rooms having 18 MV accelerators installed. It was even more pronounced in the room reconstructed after the 60Co decommissioning. This study confirms that shielding from the neutron radiation should be considered when building vaults for high energy linear accelerators, especially when the space constraints exist.http://www.doiserbia.nb.rs/img/doi/1451-3994/2014/1451-39941403207P.pdfradiotherapyelectron linear acceleratorneutron equivalent dose |
| spellingShingle | Poje Marina Ivković Ana Jurković Slaven Žauhar Gordana Vuković Branko Radolić Vanja Miklavčić Igor Kaliman Zoran Planinić Josip Brkić Hrvoje Faj Dario The neutron dose equivalent around high energy medical electron linear accelerators Nuclear Technology and Radiation Protection radiotherapy electron linear accelerator neutron equivalent dose |
| title | The neutron dose equivalent around high energy medical electron linear accelerators |
| title_full | The neutron dose equivalent around high energy medical electron linear accelerators |
| title_fullStr | The neutron dose equivalent around high energy medical electron linear accelerators |
| title_full_unstemmed | The neutron dose equivalent around high energy medical electron linear accelerators |
| title_short | The neutron dose equivalent around high energy medical electron linear accelerators |
| title_sort | neutron dose equivalent around high energy medical electron linear accelerators |
| topic | radiotherapy electron linear accelerator neutron equivalent dose |
| url | http://www.doiserbia.nb.rs/img/doi/1451-3994/2014/1451-39941403207P.pdf |
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