Development of a two-channel digital acquisition system for Δ <i>E-E</i> particle identification

Abstract We present the design and implementation of a compact digital data acquisition system based on the STM32F407 microcontroller for use in charged-particle spectroscopy. The system digitizes signals from a two-detector telescope (Δ E-E ) and transfers the results to a PC in real time via USB. The approach combines an analog front-end (preamplifier, CR-RC shaper, comparator, and peak detector) with microcontroller-based digitization and data transfer. This setup allows construction of two-dimensional coincidence matrices (Δ E vs. E ) for particle identification.