1. Design of RF front end of digital BPM for BEPCII
- Author
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Junhui Yue, Yaoyao Du, Jianshe Cao, Zhang Xing'er, H. L. Ma, Wei Shujun, Yanfeng Sui, Ma Yufei, Lin Wang, Yang Jing, Huang Xiyang, and Qiang Ye
- Subjects
Nuclear and High Energy Physics ,RF front end ,Computer science ,business.industry ,RF power amplifier ,Electrical engineering ,System testing ,Nuclear Energy and Engineering ,Filter (video) ,Key (cryptography) ,Electronics ,Isolation (database systems) ,business ,Storage ring - Abstract
In order to update the BPM electronic in BEPCII, a high-performance digital BPM processor is designed, and the RF front-end electronic is the key part in the digital BPM processor system. According to the BEPCII physical parameters and ADC under-sampling theorem, the low-noise and high-dynamic-range RF front-end electronic module is designed. This article will introduce filter, RF amplifier, isolation, system test, etc. The experimental results showed that BPM position short-term resolution is better than 100 nm, and long-term resolution is better than 5 μm. It is the first domestic BPM processor that runs stably in the storage ring accelerator for a long time. Meanwhile, the study can help us to establish a solid foundation for the next work of BPM electronics development.
- Published
- 2019