ADS注入器Ⅱ超导磁铁电源控制器的设计

Design of Superconducting Magnet Power Supply Controller for Injector Ⅱ in ADS

针对加速器驱动次临界系统(ADS)注入器Ⅱ对超导磁铁电源系统的要求,设计了一款主要由光纤模块、数模转换器(DAC)和模数转换器(ADC)相关电路组成的高稳定度的超导磁铁电源控制器。提出了一种基于数字电位器(DCP)与现场可编程门阵列(FPGA)所组成的DAC,该DAC可以实现高稳定度的超导磁铁电源的控制,电源电流值通过该DAC给定,其电压给定输出稳定度优于2×10-5,完全满足超导磁铁电源系统5×10-5量级的稳定度要求。最后给出了系统的实际测试数据,验证了设计的合理性和使用的可靠性。

According to the requirements of ADS project for superconducting magnet power supply system, a controller with high stability for superconducting magnet power supply system is designed, and it mainly consists of optical fiber module, digital to analog converter (DAC) and analog to digital converter (ADC) circuit. The DAC based on digitally controlled potentiometer (DCP) and field programmable gate array (FPGA) can achieve high stability control of superconducting magnet power supply, and the value of current can be given by the DAC. The output stability of this DAC can be more than 2×10-5, which can fully meet the requirement of 5 × 10-5 for superconducting magnet power supply. The test data of the system is given, which verified the rationality and reliability of this design.