caa a22 4500 445304286 CHVBK 20180317142607.0 cr unu---uuuuu 170323e20101201xx s 000 0 eng 10.1007/s13246-010-0040-6 doi (NATIONALLICENCE)springer-10.1007/s13246-010-0040-6 Comparison of natural and synthetic diamond X-ray detectors [Elektronische Daten] [S. Lansley, G. Betzel, P. Metcalfe, L. Reinisch, J. Meyer] Diamond detectors are particularly well suited for dosimetry applications in radiotherapy for reasons including near-tissue equivalence and high-spatial resolution resulting from small sensitive volumes. However, these detectors have not become commonplace due to high cost and poor availability arising from the need for high-quality diamond. We have fabricated relatively cheap detectors from commercially-available synthetic diamond fabricated using chemical vapour deposition. Here, we present a comparison of one of these detectors with the only commercially-available diamond-based detector (which uses a natural diamond crystal). Parameters such as the energy dependence and linearity of charge with dose were investigated at orthovoltage energies (50-250kV), and dose-rate dependence of charge at linear accelerator energy (6MV). The energy dependence of a synthetic diamond detector was similar to that of the natural diamond detector, albeit with slightly less variation across the energy range. Both detectors displayed a linear response with dose (at 100kV) over the limited dose range used. The sensitivity of the synthetic diamond detector was 302nC/Gy, compared to 294nC/Gy measured for the natural diamond detector; however, this was obtained with a bias of 246.50V compared to a bias of 61.75V used for the natural diamond detector. The natural diamond detector exhibited a greater dependency on dose-rate than the synthetic diamond detector. Overall, the synthetic diamond detector performed well in comparison to the natural diamond detector. Australasian College of Physical Scientists and Engineers in Medicine, 2010 X-ray detector nationallicence Synthetic diamond nationallicence Natural diamond nationallicence Energy dependence nationallicence Dose linearity nationallicence Dose-rate dependence nationallicence Lansley S. Department of Physics and Astronomy, University of Canterbury, Christchurch, New Zealand aut Betzel G. Department of Physics and Astronomy, University of Canterbury, Christchurch, New Zealand aut Metcalfe P. Centre for Medical Radiation Physics, University of Wollongong, Wollongong, Australia aut Reinisch L. Department of Physical and Earth Sciences, Jacksonville State University, Jacksonville, AL, USA aut Meyer J. Department of Physics and Astronomy, University of Canterbury, Christchurch, New Zealand aut Australasian Physical & Engineering Sciences in Medicine Springer Netherlands 33/4(2010-12-01), 301-306 0158-9938 33:4<301 2010 33 13246 https://doi.org/10.1007/s13246-010-0040-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s13246-010-0040-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lansley S. Department of Physics and Astronomy, University of Canterbury, Christchurch, New Zealand aut NATIONALLICENCE 700 1- Betzel G. Department of Physics and Astronomy, University of Canterbury, Christchurch, New Zealand aut NATIONALLICENCE 700 1- Metcalfe P. Centre for Medical Radiation Physics, University of Wollongong, Wollongong, Australia aut NATIONALLICENCE 700 1- Reinisch L. Department of Physical and Earth Sciences, Jacksonville State University, Jacksonville, AL, USA aut NATIONALLICENCE 700 1- Meyer J. Department of Physics and Astronomy, University of Canterbury, Christchurch, New Zealand aut NATIONALLICENCE 773 0- Australasian Physical & Engineering Sciences in Medicine Springer Netherlands 33/4(2010-12-01), 301-306 0158-9938 33:4<301 2010 33 13246 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer