Method and apparatus for digitizing scintillation pulses

摘要

A scintillation pulse digitization method in which n threshold voltages V_th are set based on scintillation pulse characteristics, a voltage comparison unit is configured by n low-voltage differential signal reception ports, and any of the pulses waiting for sampling When one threshold is exceeded, the voltage comparison unit outputs one state transition and the threshold voltage corresponding to the state transition, and the time transition of the state transition is digitized and sampled by a time digital converter, and the state transition The scintillation pulse digitization is completed by recognizing the threshold voltage corresponding to and acquiring the scintillation pulse voltage time pair. A scintillation pulse digitization apparatus comprising a scintillation pulse conversion unit, a threshold comparison unit, a time digitization unit, and a data processing and transmission unit. The present invention realizes threshold comparison by a digital differential interface in a field programmable gate array, acquires voltage time pairs of scintillation pulses, realizes digitization of scintillation pulses, and greatly simplifies the system configuration. , Improve system integration and reduce system power consumption. [Selection] Figure 1