A Transient Current Technique was used to evaluate non-irradiated and irradiated p-type silicon micro-strip detectors. The beam was parallel with the surface and perpendicular to the strips (Edge-TCT) so that electron hole pairs were created at known detector depth. Induced current pulses were measured in one of the strips and analyzed in a new way, not requiring the knowledge of trapping times, to determine drift velocity, charge collection and electric field profiles. Strong evidence for charge multiplication was found with the detector irradiated to the highest fluence.
COBISS.SI-ID: 23910695
A new hybrid avalanche photo-detector has been developed for the Belle RICH counter. The basic features of this device were examined with and without a magnetic field. By constructing a RICH prototype counter using 6 photo-detectors, we carried out a test beam experiment to confirm the performance. We obtained a single photon Cherenkov angle resolution of 12.8 mrad with 4.6 photo-electrons in our experimental setup, demonstrating that 4??/K separation at 4 GeV/c was achieved.
COBISS.SI-ID: 24016423