Laser test studies on the single-sided dual-column 3D stripixelsilicon detector

The single-sided full-3D stripixel detector and the laser test system were introduced in this paper. The detector responses to different conditions (including detector bias voltage, laser illumination position, pulse generator parameters setting for driving laser device, etc) were measured and analyzed. Main detector parameters, including the depletion voltage, 2D position sensitivity response, charge collection characteristics with different bias voltages, noise distribution characteristics influenced by the different coupling modes of n+-strips and p+-strips electrodes to the readout chip channels, were obtained with 1060 nm laser irradiation tests. The measurement results showed that the detector was position sensitive. Its depletion voltage was about 5 V. The measured equivalent noise charge(ENC) of the detector system was about 730 ± 10e.