Comparison of SOI Microdosimeter and Tissue Equivalent Proportional Counter measurements at the CERF facility

Prokopovich,; Reinhard,; Taylor, B.C.; Rosenfeld, Anatoly B.

doi:10.1109/nssmic.2009.5402229

Cited by 3 publications

(2 citation statements)

References 9 publications

(9 reference statements)

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“…The Centre for Medical Radiation Physics (CMRP) has developed a number of generations of microdosimeters on silicon-on-insulator (SOI) substrates which have been successfully tested [3][4][5][6][7][8] and recently summarized in [9]. The latest development of SOI microdosimeters at CMRP is the 3D microdosimeter using 3D MEMS technology at SINTEF MiNaLab, Norway.…”

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confidence: 99%

Thin Silicon Microdosimeter Utilizing 3-D MEMS Fabrication Technology: Charge Collection Study and Its Application in Mixed Radiation Fields

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Prokopovich

et al. 2018

IEEE Trans. Nucl. Sci.

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New 10-μm-thick silicon microdosimeters utilizing 3-D technology have been developed and investigated in this paper. The TCAD simulations were carried out to understand the electrical properties of the microdosimeters' design. A charge collection study of the devices was performed using 5.5-MeV He 2+ ions which were raster scanned over the surface of the detectors and the charge collection median energy maps were obtained and the detection yield was also evaluated. The devices were tested in a 290 MeV/u carbon ion beam at the Heavy Ion Medical Accelerator in Chiba (HIMAC) in Japan. Based on the microdosimetric measurements, the quality factor and dose equivalent out of field were obtained in a mixed radiation field mimicking the radiation environment for spacecraft in deep space.

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confidence: 99%

Thin Silicon Microdosimeter Utilizing 3-D MEMS Fabrication Technology: Charge Collection Study and Its Application in Mixed Radiation Fields

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Prokopovich

et al. 2018

IEEE Trans. Nucl. Sci.

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“…In addition, the system complexity requires a high voltage supply [4]. The Centre for Medical Radiation Physics (CMRP), University of Wollongong, is active in the development of Silicon-On-Insulator (SOI) microdosimeters, as an alternative to TEPCs, for radiation protection purposes [5][6][7][8]. With respect to conventional TEPCs, the proposed SOI microdosimeters are portable and do not require a high voltage power supply.…”

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confidence: 99%

Modelling of the Silicon-On-Insulator microdosimeter response within the International Space Station for astronauts’ radiation protection

Peracchi

Vohradsky

Guatelli

et al. 2019

Radiation Measurements

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Astronauts are exposed to high-energy cosmic radiation which may have harmful health effects. At the altitude of the International Space Station (ISS), the main radiation sources are Galactic Cosmic Rays (GCRs), Solar Particle Events (SPEs) and trapped protons of the Van Allen Belts. The radiation field mainly consists of protons, helium nuclei and heavy ions with energies up to hundreds of GeV/n. A powerful approach to determine the effect of space radiation on astronauts is microdosimetry. The Centre for Medical Radiation Physics is active in the development of Silicon-On-Insulator (SOI) microdosimeters, as an alternative to Tissue Equivalent Proportional Counters (TEPCs) for radiation protection purposes. SOI microdosimeters are portable and do not require a high-voltage power supply. They consist of a matrix of silicon Sensitive Volumes (SV), which mimic the dimensions of biological cells. In this study, we investigated for the first time the response of the 3D "Mushroom" microdosimeter, a type of SOI microdosimeter in the Columbus module of the ISS. Tissue-equivalent microdosimetric spectra of GCRs, SPEs, and trapped protons were obtained to estimate the dose equivalent delivered to the astronauts. Results demonstrate a non-negligible production of secondary particles due to the propagation of space radiation through the wall of the Columbus and the microdosimeter. A number of heavy ions were detected with high lineal energies, these events pose a significant hazard in terms of radiation protection. Moreover, the dose evaluation shows a good agreement with experimental data found in the literature, confirming the suitability of our Geant4 model and the feasibility of using the SOI microdosimeter for ISS astronauts' personal dosimetry.

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Characterization of a Large Area Thinned Silicon Microdosimeter for Space and Particle Therapy

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Bolst

et al. 2015

IEEE Trans. Nucl. Sci.

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Comparison of SOI Microdosimeter and Tissue Equivalent Proportional Counter measurements at the CERF facility

Cited by 3 publications

References 9 publications

Thin Silicon Microdosimeter Utilizing 3-D MEMS Fabrication Technology: Charge Collection Study and Its Application in Mixed Radiation Fields

Thin Silicon Microdosimeter Utilizing 3-D MEMS Fabrication Technology: Charge Collection Study and Its Application in Mixed Radiation Fields

Modelling of the Silicon-On-Insulator microdosimeter response within the International Space Station for astronauts’ radiation protection

Characterization of a Large Area Thinned Silicon Microdosimeter for Space and Particle Therapy

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