Background: Shanghai Synchrotron Radiation Facility (SSRF) is an advanced third-generation synchrotron radiation electron accelerator. The synchrotron radiation devices require the magnets and magnet power supply of high performance

such as high precision and high stability. In the design of a magnet and a magnet power supply

the flux and current signals is required to be measured simultaneously. Purpose: In order to simultaneously measure the two signals with high precision

a high precision synchronization data acquisition system should be designed and implemented. Methods: An 18-bits

5 MSPS analog to digital converter of AD7960 is used to realize the high precision data acquisition. The synchronizing trigger signal is produced by Field-Programmable Gate Array (FPGA)

which is used to generate the control logic. Results: After the test of effective precision of Analog Digital Converter (ADC) and the synchronization performance

it is resulted that the effective precision of this system is better than 18 bits

and the performance of synchronization is great. Conclusion: The system proposed in this paper satisfies requirements of high precision synchronization data acquisition for SSRF. Abstract