A silicon photomultiplier readout ASIC for time-of-flight applications using a new time-of-recovery method
Silicon photomultiplier timing chip (STiC) is a 64-channel mixed-mode application-specific integrated circuit in the 0.18-μm CMOS technology from Univited Microelectronics Corporation (UMC) for silicon photomultiplier (SiPM) readout with very high timing resolution. It is designed for time-of-flight...
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| Main Authors: | , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
May 16, 2018
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| In: |
IEEE transactions on nuclear science
Year: 2018, Volume: 65, Issue: 5, Pages: 1196-1202 |
| ISSN: | 1558-1578 |
| DOI: | 10.1109/TNS.2018.2821769 |
| Online Access: | Verlag, Volltext: https://doi.org/10.1109/TNS.2018.2821769
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| Author Notes: | Wei Shen, Member, IEEE, Tobias Harion, Huangshan Chen, Konrad Briggl, Vera Stankova, Yonathan Munwes, and Hans-Christian Schultz-Coulon, Member, IEEE |
| Summary: | Silicon photomultiplier timing chip (STiC) is a 64-channel mixed-mode application-specific integrated circuit in the 0.18-μm CMOS technology from Univited Microelectronics Corporation (UMC) for silicon photomultiplier (SiPM) readout with very high timing resolution. It is designed for time-of-flight measurements in positron emission tomography and high-energy physics experiments. In order to achieve the best timing performance without compromising the charge/energy measurement, a novel time-based signal processing technique called “time-of-recovery (ToR)” method has been developed and implemented in the analog front end of the chip. This technique converts the incoming charge into a digital pulse with a linearized time-overthreshold width. Measurements have shown a time jitter smaller than 20 ps for the analog front end and smaller than 40 ps for the time-to-digital converter and the digital part. A coincidence time resolution of 214-ps full-width at half-maximum (FWHM) has been obtained with STiC using 3.1×3.1×15 mm3LYSO:Ce crystals and Hamamatsu multi pixel photon counters (S12643050CN(X)). The measured energy resolution for a 511-keV photon is 11.2% FWHM after correcting for SiPM saturation effects. In this paper, we report on the details of the ToR method and how it is embedded within the STiC design; results of performance measurements as well as the 128-channel front-end module used for the EndoTOFPET-US project are also presented. |
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| Item Description: | Gesehen am 02.10.2019 |
| Physical Description: | Online Resource |
| ISSN: | 1558-1578 |
| DOI: | 10.1109/TNS.2018.2821769 |