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The present paper focuses on the development of the SimPET simulation tool intended for the estimation of the solidstate photons detector (Silicon Photomultiplier, SiPM, or Multi-Pixel Photon Counter, MPPC) and front-end electronics responses to scintillations generated in LYSO crystals of a PET scanner. The SimPET simulation software is presented, including the description of methods and algorithms...
Monte Carlo simulations were carried out in order to evaluate the performance of readout solutions for monolithic LYSO blocks, considering several 2D array configurations of discrete SiPMs. Results were compared to conventional multianode PMT readout. Our findings show that a detector module based on an array of 8×8 discrete SiPM may lead to better energy resolution and comparable spatial resolution...
An eight-channel readout ASIC has been developed for reading out signals from Silicon Photomultiplier (SiPM) for PET applications. It converts both signal charge and occurring time to digital timing pulses and only needs TDC. It has the advantages of simplified circuit design, reduced power consumption and suitable for large number of readout channels. The ASIC uses a fully current mode preamplifier...
This article describes methods to improve the timing performance of solid-state photomultiplier (SSPM) based PET detectors in terms of readout electronics and device level optimization. Coincidence timing measurements based on coupling a 3 ?? 3 ?? 10 mm3 LYSO crystal to a Hamamatsu 50 ??m 3 mm ?? 3 mm SSPM were performed. The effect of readout electronics' bandwidth to coincidence timing resolution...
Silicon photomultipliers (SiPMs) are a novel type of solid state photon detectors with similar internal gain factors as Photomultiplier Tubes (PMTs). Due to their low operation bias voltage, magnetic field immunity and small size, these new silicon photon detectors can be used for a wide range of applications, in particular Positron Emission Tomography (PET). Using combined crystal/SiPM systems for...
Time of flight (TOF) measurements in positron emission tomography (PET) are very challenging in terms of timing performance, and should achieve ideally less than 100 ps FWHM precision. We present a time-based differential technique to read out SiPMs that has less than 25 ps rms electronic jitter. The novel readout is a fast front end circuit (NINO) based on a first stage differential current mode...
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