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T: Fachverband Teilchenphysik
T 35: Elektronik
T 35.4: Vortrag
Dienstag, 20. März 2018, 17:15–17:30, Z6 - SR 1.005
MuTRiG: Silicon Photomutiplayer readout ASIC for precise timing and high event rate applications — Huangshan Chen, Konrad Briggl, Hans-Christian Schultz-Coulon, Wei Shen, and •Vera Stankova — Heidelberg University, Kirchhoff Institute for Physics
MuTRiG is a silicon Photomultipliers readout ASIC, for precise timing measurements and high event rate data transmission, required in high energy physics experiments. It is optimised for the Mu3e experiment designed to probe new physics by searching for the charged lepton-flavour violating decay µ → e+e+e− with a branching ratio sensitivity of 10−16. The chip will be used for the readout of the scintillating fiber and tile detectors. The ASIC comprise 32 fully differential analog front-end channels with integrated 50 ps time binning Time to Digital Converters. Dedicated digital block process and transfer the event data to the data acquisition system via a 1.28 Gbps LVDS link. Extensively measurements have been done to characterize the timing performance and the digital functionalities of the prototype chip. A front-end jitter has been characterized to be < 20 ps with charge injection measurements for charges > 350fC. A full chain jitter of < 30 ps has been obtained for injected charge of 1 pC and for event rate up to 15 MHz. The maximum event rate of the chip is 20.24 MHz and 25 MHz for the standard and short event structure configurations respectively at the serial data link bit rate of 1.25 Gbps. The Bit Error Rate of the serial data link has been measured to be < 5.90−16. The chip architecture and characterization measurements results will be presented.