Speaker
Description
Ring Imaging CHerenkov (RICH) detector is one of the candidates for PID (Particle Identification) at STCF. As for the MPGD (Micro Pattern Gas Detector) detector, the readout electronics must feature high density, low noise, and low power consumption. In this poster, a new prototype readout ASIC for the RICH detector is presented. The chip integrates 32 readout channels and is fabricated in a 0.18 μm CMOS process. Each channel mainly consists of five parts: a Charge Sense Amplifier (CSA), a pole-zero cancellation (PZC), a shaper, a discriminator, and a 7-bits DAC. The chip has been under test and the test results meet the requirements. The equivalent noise charge is less than 0.5 fC with an input capacitance up to 50 pF. The maximum INL equals 0.97% and the power consumption is only 9.6 mW per channel.
