Speaker
Description
A new front-end ASIC named "PIST" (pico-second timing) has been successfully developed using 55 nm CMOS technology for the silicon photomulplier (SiPM) readout with a single channel with a major aim of fast timing. We performed extensive tests to evaluate the timing performance of a dedicated test stand. The results show that the system timing resolution can reach sub 10 ps, while the PIST intrinsic timing resolution is better than 5 ps. The PIST dynamic range has been further extended using the time-over-threshold (ToT) technique.
Meanwhile, we fully characterised a new SiPM-readout 32-channel ASIC for developments of a future high-granularity homogeneous calorimeter. Comprehensive measurements were made with a laser beam and high-energy particle beams with crystals and SiPMs. First results show that this chip has an excellent signal-to-noise for the single photon calibration and a large dynamic range.
This contribution will introduce the two ASICs and present highlighted results.
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