PUB00-1

Paper 2001-04

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CVD DIAMOND MICRODOSIMETERS

Presented at 11th International workshop on room temperature semiconductor, x and gamma ray detectors and associated electronics, October 11-15 1999,Vienna (Austria) and published in Nucl. Instr. And Meth. In Phys. Res Nucl. Instr. And Meth. In Phys. Res. A, 458 (1-2) (2001) pp. 360-361

C.Manfredotti^1,2, A.Lo Giudice^1,2, C.Ricciardi¹, C.Paolini¹, E.Massa³, F.Fizzotti^1,2 and E.Vittone ^1,2

^{1Experimental Physics Department, University of Torino (I)
^{2INFM, Unity of Torino University
^{3Istituto di Metrologia "G.Colonnetti", CNR, Torino}}}

Keywords: CVD diamond, x-ray detectors, solid state detectors, dosimetry.

ABSTRACT

CVD diamond detectors have been evaluated for use as x-ray dosimeters. The response both at radiological diagnostic and at therapeutic energies of one "detector grade" commercially available parallelepiped CVD sample has been measured and compared with the performances of a "needle shaped" CVD diamond detector grown by the hot filament CVD technique on a tungsten tip. All the detectors were demonstrated to be very suitable for bio-medical application: they are linear in dose rate, stable and relatively fast, with a signal to noise ratio higher than 1000.