The design of a data acquisition system (DAQ) for a novel positron emission tomography scanner is reported. The PET system, based on long axially oriented scintillation crystals, read out by hybrid photon detectors (HPD), allows 3D parallax-error free Compton enhanced gamma reconstruction. The DAQ system is composed of several read-out cards, each one associated with a module of the PET scanner, and of a main card that controls the whole system. Using fast triggering signals from the silicon sensor back-planes, the main card performs the coincidence analysis, and, in case of coincidence, it enables the read-out of the two modules involved. The other modules are left free to perform new acquisitions. This concept based on several independent, event driven and parallel read-out chains, drastically reduce the acquisition dead time. Each enabled readout card digitizes, encodes and stores data from the respective module. Data are stored in a local FIFO and then are transferred through a network into a single computer. The system is designed according to the specifications of IDEAS VaTaGP5 chip. Each read-out card is able to accommodate all the chip read-out modes and the test procedures and can be used as a standalone read-out system that allows reading out up to 16 daisy chained chips per channel. We describe a simplified DAQ system, designed for a two module demonstrator set-up, developed to study and optimize the essential design parameters
An Event Driven Read-out System for a Novel PET Scanner with Compton Enhanced 3D Gamma Reconstruction / Dragone, A.; Corsi, Francesco; Marzocca, Cristoforo; Losito, P.; Pasqua, D.; Nappi, E.; De Leo, R.; Séguinot, J.; Braem, A.; Chesi, E.; Joram, C.; Weilhammer, P.; Garibaldi, F.; Zaidi, H.. - STAMPA. - (2004), pp. 3156-3160. (Intervento presentato al convegno Nuclear Science Symposium, Medical Imaging Conference tenutosi a Roma, Italy nel October 16-22, 2004) [10.1109/NSSMIC.2004.1466350].
An Event Driven Read-out System for a Novel PET Scanner with Compton Enhanced 3D Gamma Reconstruction
CORSI, Francesco;MARZOCCA, Cristoforo;
2004-01-01
Abstract
The design of a data acquisition system (DAQ) for a novel positron emission tomography scanner is reported. The PET system, based on long axially oriented scintillation crystals, read out by hybrid photon detectors (HPD), allows 3D parallax-error free Compton enhanced gamma reconstruction. The DAQ system is composed of several read-out cards, each one associated with a module of the PET scanner, and of a main card that controls the whole system. Using fast triggering signals from the silicon sensor back-planes, the main card performs the coincidence analysis, and, in case of coincidence, it enables the read-out of the two modules involved. The other modules are left free to perform new acquisitions. This concept based on several independent, event driven and parallel read-out chains, drastically reduce the acquisition dead time. Each enabled readout card digitizes, encodes and stores data from the respective module. Data are stored in a local FIFO and then are transferred through a network into a single computer. The system is designed according to the specifications of IDEAS VaTaGP5 chip. Each read-out card is able to accommodate all the chip read-out modes and the test procedures and can be used as a standalone read-out system that allows reading out up to 16 daisy chained chips per channel. We describe a simplified DAQ system, designed for a two module demonstrator set-up, developed to study and optimize the essential design parametersI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.