Author/Authors :
Almaviva، نويسنده , , Laura S. and Marinelli، نويسنده , , Marco and Milani، نويسنده , , E. and Tucciarone، نويسنده , , A. and Verona-Rinati، نويسنده , , G. and Consorti، نويسنده , , R. and Petrucci، نويسنده , , A. and de Notaristefani، نويسنده , , F. and Ciancaglioni، نويسنده , , I.، نويسنده ,
Abstract :
Synthetic single crystal diamonds in a p-type/intrinsic/metal structure were tested as dosimeters for radiotherapy. The devices have been analyzed by using 6 and 10 MV Bremsstrahlung X-ray beams and electron beams from 6 MeV up to 18 MeV from a CLINAC DHX Varian accelerator. All measurements have been performed in a water phantom and ionization chambers were used for calibration and comparison. The dosimeters were operated in photovoltaic regime with no external bias voltage applied. A few Gy pre-irradiation was performed in order to stabilize the device output, resulting in fluctuations sensitivity below ±0.5%. No dose rate dependence of the detector response was observed. Very good reproducibility and linearity were obtained as well.
