Mainz 2014 – scientific programme

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T: Fachverband Teilchenphysik

T 23: DAQ, Trigger, Elektronik 1

T 23.6: Talk

Monday, March 24, 2014, 12:15–12:30, GFH 01-731

STiC3 - A chip for pico-seconds Time-of-Flight Applications — •Vera Koleva Stankova, Tobias Harion, and Wei Shen — Kirchhoff-Institute for Physics, Im Neuenheimer Feld, 227 D-69120 Heidelberg

STiC is a recently developed application specific integrated circuit (ASIC) for time-of-flight measurements in high energy physics and medical imaging applications. It is a 64-channel mixed mode ASIC designed in the UMC 0.18 µm CMOS technology for the readout of silicon photomultipliers (SiPM), dedicated to the ENDOToFPET-US project. The project aims at the development of a precise endoscopic PET probe for early pancreas and prostate cancer detection with a spatial resolution of 1 mm and a time-of flight resolution of 200 ps. The 64-channel chip has a size of only 5x5 mm² and each channel consist of an analog and a digital part. The analog front-end part provides the information of the input signal in terms of a shaped pulse which is proportional to the input charge. The digital part integrates a time-to digital converter (TDC) with a timing resolution of 20 ps which generates two times stamps from the analog pulse. The TDC data is stored into a FIFO memory. Later the data is encoded (8/10Bit) and send to a pc with 160 MBit/s serial link. The nominal power is estimated to 25 mW per channel. The detail for the chip design and first measurements result with a SiPM and a LYSO scintillator crystal will be presented.