Münster 2017 – scientific programme

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T: Fachverband Teilchenphysik

T 46: Elektronik

T 46.2: Talk

Tuesday, March 28, 2017, 11:15–11:30, JUR 5

MuTRiG: a Mixed-Signal SiPM Readout ASIC with High Timing Resolution and High Event Rate Capability — •Huangshan Chen, Konrad Briggl, Patrick Eckert, Tobias Harion, Yonathan Munwes, Wei Shen, Vera Stankova, and Hans-Christian Schultz-Coulon for the Mu3e collaboration — Kirchhoff Institut für Physik, Heidelberg University, Heidelberg, Germany

MuTRiG is a mixed-signal Silicon Photomultiplier readout ASIC developed in UMC 180 nm CMOS technology. It is dedicated to the readout of the tile detector and the fiber detector of the Mu3e experiment. A good timing resolution of 100 ps (σ) and 500 ps (σ) is required for the Mu3e tile detector and the Mu3e fiber detector respectively, in order to reduce the accidental background at high rates. An event rate as high as 1.3 MHz/channel in the Mu3e fiber detector poses another challenge for the development of MuTRiG. MuTRiG is designed with 32 fully differential analog front-end channels and 50 ps time binning TDCs, which both have been extensively characterized in STiCv3 ASIC and have proven an excellent timing resolution. The recorded event data are processed by the integrated digital circuits and transferred to the data acquisition system (DAQ) via a gigabit LVDS data link with 8b/10b encoding. The gigabit data link is accomplished by a dedicated double data rate serializer and a customized LVDS transmitter. An external validation functionality is implemented to reduce the load of data link. The design of the MuTRiG chip and the characterization results of the analog front-end, TDC and the gigabit data link will be presented.