Recent developments in the domain of the standard CMOS imagers for visible light, mainly in the reduction of the pixel size, has led us to investigate the suitability of some of these devices as ionizing radiation detectors. A standard 640x480 imager with 5.6x5.6 micrometer pixel size (Aptina product MT9SH06) has been characterized with X-ray (55Fe and 8 keV X-ray tube) and charged particles sources (500 MeV electrons). The main results obtained are: a small average pixel multiplicity (4-5), for the detection of either X-ray or charged particles; a good linearity of the response; a S/N ratio of 29 for a Minimum Ionizing Particle and an estimated sensitivity to X-rays down to 1 keV.
Characterization of standard CMOS pixel imagers as ionizing radiation detectors
PASSERI, Daniele;
2010
Abstract
Recent developments in the domain of the standard CMOS imagers for visible light, mainly in the reduction of the pixel size, has led us to investigate the suitability of some of these devices as ionizing radiation detectors. A standard 640x480 imager with 5.6x5.6 micrometer pixel size (Aptina product MT9SH06) has been characterized with X-ray (55Fe and 8 keV X-ray tube) and charged particles sources (500 MeV electrons). The main results obtained are: a small average pixel multiplicity (4-5), for the detection of either X-ray or charged particles; a good linearity of the response; a S/N ratio of 29 for a Minimum Ionizing Particle and an estimated sensitivity to X-rays down to 1 keV.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
