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Communication

Simultaneous Measurements of Dose and Microdosimetric Spectra in a Clinical Proton Beam Using a scCVD Diamond Membrane Microdosimeter

1
Université Paris-Saclay, CEA, List, F-91120 Palaiseau, France
2
Institut Curie, Radiation Oncology Department, PSL Research University, Proton Therapy Centre, Centre Universitaire, 91898 Orsay, France
3
Institut Curie, PSL Research University, University Paris Saclay, LITO, Inserm, 91898 Orsay, France
*
Authors to whom correspondence should be addressed.
Current address: Diamond Sensors Laboratory, Centre Digiteo, CEA LIST, 91191 Gif Sur Yvette, France.
Academic Editor: Han Haitjema
Sensors 2021, 21(4), 1314; https://doi.org/10.3390/s21041314
Received: 18 December 2020 / Revised: 25 January 2021 / Accepted: 7 February 2021 / Published: 12 February 2021
(This article belongs to the Section Nanosensors)
A single crystal chemical vapor deposition (scCVD) diamond membrane-based microdosimetric system was used to perform simultaneous measurements of dose profile and microdosimetric spectra with the Y1 proton passive scattering beamline of the Center of Proton Therapy, Institute Curie in Orsay, France. To qualify the performance of the set-up in clinical conditions of hadrontherapy, the dose, dose rate and energy loss pulse-height spectra in a diamond microdosimeter were recorded at multiple points along depth of a water-equivalent plastic phantom. The dose-mean lineal energy (y¯D) values were computed from experimental data and compared to silicon on insulator (SOI) microdosimeter literature results. In addition, the measured dose profile, pulse height spectra and y¯D values were benchmarked with a numerical simulation using TOPAS and Geant4 toolkits. These first clinical tests of a novel system confirm that diamond is a promising candidate for a tissue equivalent, radiation hard, high spatial resolution microdosimeter in beam quality assurance of proton therapy. View Full-Text
Keywords: diamond; proton therapy; microdosimetry; radiation detectors; dosimeters; sensors diamond; proton therapy; microdosimetry; radiation detectors; dosimeters; sensors
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MDPI and ACS Style

Loto, O.; Zahradnik, I.; Leite, A.M.; De Marzi, L.; Tromson, D.; Pomorski, M. Simultaneous Measurements of Dose and Microdosimetric Spectra in a Clinical Proton Beam Using a scCVD Diamond Membrane Microdosimeter. Sensors 2021, 21, 1314. https://doi.org/10.3390/s21041314

AMA Style

Loto O, Zahradnik I, Leite AM, De Marzi L, Tromson D, Pomorski M. Simultaneous Measurements of Dose and Microdosimetric Spectra in a Clinical Proton Beam Using a scCVD Diamond Membrane Microdosimeter. Sensors. 2021; 21(4):1314. https://doi.org/10.3390/s21041314

Chicago/Turabian Style

Loto, Oluwasayo, Izabella Zahradnik, Amelia M. Leite, Ludovic De Marzi, Dominique Tromson, and Michal Pomorski. 2021. "Simultaneous Measurements of Dose and Microdosimetric Spectra in a Clinical Proton Beam Using a scCVD Diamond Membrane Microdosimeter" Sensors 21, no. 4: 1314. https://doi.org/10.3390/s21041314

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