Silicon-based three-dimensional microstructures for radiation dosimetry in hadrontherapy
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)
- Centro Nacional de Microelectrónica (IMB-CNM, CSIC), Bellaterra 08193 (Spain)
- Departamento de Física Atómica, Molecular y Nuclear, University of Sevilla, 41080 Sevilla (Spain)
- Departamento de Física de Partículas, Universidad de Santiago de Compostela, Santiago de Compostela 15782 (Spain)
In this work, we propose a solid-state-detector for use in radiation microdosimetry. This device improves the performance of existing dosimeters using customized 3D-cylindrical microstructures etched inside silicon. The microdosimeter consists of an array of micro-sensors that have 3D-cylindrical electrodes of 15 μm diameter and a depth of 5 μm within a silicon membrane, resulting in a well-defined micrometric radiation sensitive volume. These microdetectors have been characterized using an {sup 241}Am source to assess their performance as radiation detectors in a high-LET environment. This letter demonstrates the capability of this microdetector to be used to measure dose and LET in hadrontherapy centers for treatment plan verification as part of their patient-specific quality control program.
- OSTI ID:
- 22483203
- Journal Information:
- Applied Physics Letters, Vol. 107, Issue 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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