Characterization of CVD-diamonds for radiation detection.

We report the results of our investigations on high quality Single Crystal Chemical Vapour Deposition (SC-CVD) diamonds to be used as ionizing radiation detectors. The unique properties of diamond makes it one of the most promising wide band-gap materials not only in the already established field of high luminosity X-ray detection for medical applications but also in modern high energy physics. Recent progress in growth of synthetic diamonds of very high purity and high homogeneity has opened perspectives to a new type of UV photosensors in order to work with large volume two phase liquid-Ar and/or liquid-Xe detectors, nowadays under design for next generation dark matter search. SC-CVD diamonds supplied by Brevetti BIZZ firm of San Bonifacio (VR, Italy) were investigated and the results are presented and discussed.