Multifunction signal detection and data acquisition system for SINAP’s scanning proton microprobe

For acquiring multiple physical parameters in one experiment on the SINAP scanning proton microprobe(SPM), the new multifunction signal detection and data acquisition system was developed. The system consists of multiple detectors, multi-stations and multi-parameters data acquisition and beam scanning system, manipulator control and microscope system. Multiple detectors include two Si(Li) detectors for X-rays, a HPGe detector for gamma-rays, and Au(Si) surface barrier detectors for charged particles. The core data acquisition system, named 4LB-Ⅰis based on National Instruments PXI-7852R card and Labview FPGA module. It performs the functions of multi-channel data acquisition, display, beam scanning and two-dimensional images, which can obtain multiple physical parameters simultaneously in one measurement. Six axis vacuum manipulator is computer-controlled for sample positioning and video sample imaging. The initial experiment results show that the system is a powerful tool with good stability and reliability.