上海光源数字化低电平控制系统的硬件设计与实现
Design and realization of digital low level RF system for SSRF
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摘要: 设计了上海光源高频低电平控制系统,它是以数字化技术为基础，采用上下变频和IQ调制解调技术，实现幅度、频率和相位的反馈控制。上海光源储存环的束流设计流强为300 mA，为了抑制由此带来的Robinson不稳定性和纵向零模束流振荡，加入了高频直接反馈和零模束流反馈环路。从上下变频技术、IQ调制解调技术、时钟分配及锁相技术等方面对上海光源数字化低电平系统的硬件设计及其实现进行了阐述，给出了该系统试验、高功率下运行的测试结果，实现了设计要求的幅度控制精度±1%、频率控制精度 ±10 Hz和相位控制精度± 1°的技术指标。Abstract: Based on digital technology, using the up and down converter, IQ modulator and demodulator techniques, the magnitude control, frequency control and feedback phase control are realized and the low level RF system for Shanghai synchrotion radiation facility(SSRF) is designed. The beam current of SSRF is about 300 mA.In order to suppress the Robinson instability and the zero-mode beam instability, the RF feedback and zero-mode beam feedback will be added. How to design the up and down converter,IQ modulator and demodulator, clock distribution and phase locked techniques will be discussed in this paper. The results of the system testing at high power are given in this paper. The low level RF system has realized the design requirements: amplitude control accuracy rate of ± 1%, frequency contro
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Key words:
- digital /
- iq /
- phase locked /
- clock distribution /
- low level /
- phase
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