A free-running, time-based readout method for particle detectors
2014; Institute of Physics; Volume: 9; Issue: 03 Linguagem: Inglês
10.1088/1748-0221/9/03/c03025
ISSN1748-0221
AutoresA. Goerres, R. Bugalho, A. Di Francesco, C Gastón, F.M. Gonçalves, G. Mazza, M. Mignone, V. Di Pietro, Alberto Riccardi, J. Ritman, A. Rivetti, M. Rolo, J C da Silva, R Silva, T. Stockmanns, J. Varela, V. Veckalns, R. Wheadon,
Tópico(s)Atomic and Subatomic Physics Research
ResumoFor the EndoTOFPET-US experiment, the TOFPET ASIC has been developed as a front-end chip to read out data from silicon photomultipliers (SiPM) [1]. It introduces a time of flight information into the measurement of a PET scanner and hence reduces radiation exposure of the patient [2]. The chip is designed to work with a high event rate up to 100 kHz and a time resolution of 50 ps LSB. Using two threshold levels, it can measure the leading edge of the event pulse precisely while successfully suppressing dark counts from the SiPM. This also enables a time over threshold determination, leading to a charge measurement of the signal's pulse.
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