Performance of Front-end ASIC and its evaluation with Silicon Strip Sensor for J-PARC Muon g-2/EDM Experiment

The muon anomalous magnetic moment (g - 2)
_μ
and electric dipole moment (EDM) are sensitive to new physics beyond the Standard Model. We aim to measure (g - 2)
_μ
with a precision of 0.1 parts per million and search for EDM with a sensitivity of 10
^-21
e·cm at J-PARC. In this experiment, we use a silicon strip detector with high granularity and fast response to detect positrons from muon decay. The readout ASIC is required to tolerate a high hit rate of 1.4 MHz per strip, to be stable to the change of hit rate by a factor of 1/150, and to have deep memory for the period of ~40μs with 5 ns resolution. The prototype readout ASIC “SliT128A” has been fabricated using the Silterra 0.18-μm CMOS process. We also connected the SliT128A with a silicon strip sensor and tested it with a muon beam at J-PARC. In this paper, we report the performance of the prototype ASIC itself and the prototype detector module.