# Development of Fast Protection System with Xilinx ZYNQ SoC for RAON Heavy-Ion Accelerator
## 6 Conclusions  
The completion of the development process for the Fast Protection System (_FPS_) with Xilinx ZYNQ _SoC_ for the RAON heavy-ion accelerator marks a significant milestone. The first _FPS_ prototype demonstrated satisfactory performance, meeting the crucial requirement of protecting the internal components of the accelerator from potential beam damage [3]. Notably, the modified mitigation node, which incorporates a cost-effective _SoC_, was successfully optimized by increasing the number of SFP+ ports and implementing a modified driver and library. This enhancement resulted in even faster reaction times compared to the previous version of the _FPS_.  
The measured total signal processing time, including measurement and interlock output, for a 1 km optical cable in the RAON system is 9.8 us, well within the requirement of 20 us for _FPS_ time. The successful achievement of this performance milestone ensures that the _FPS_ is capable of effectively responding to potential hazards and mitigating risks within the specified time constraints.  
Figure 20 showcases the installation of the actual _FPS_, depicting the practical implementation of the system within the RAON accelerator facility. Looking ahead, future plans involve exploring the integration of artificial intelligence (AI) techniques into the Machine Protection System (_MPS_). By incorporating AI, the aim is to design a system that can predict and proactively control abnormal signals, further enhancing the safety and operational efficiency of the _FPS_.  
In summary, the successful development and performance evaluation of the _FPS_ with Xilinx ZYNQ SoC for the RAON heavy-ion accelerator highlight the effectiveness and suitability of this integrated solution. The optimized system design, enhanced reaction times, and future plans for AI integration demonstrate the commitment to continuous improvement and innovation in the field of accelerator protection and control systems.  
Figure 19: Value of index vs. interlock at \(\pm\)200 μs.  
**Author Contributions:** Conceptualization, S.-H.N.; Methodology, C.S.; Software, S.-H.N.; Validation, C.S.; Formal analysis, S.-H.N.; Resources, C.S.; Data curation, C.S.; Writing--original draft, S.-H.N.; Writing--review & editing, J.B.; Project administration, J.B.; Funding acquisition, J.B. All authors have read and agreed to the published version of the manuscript.  
**Funding:** This work was supported by the Rare Isotope Science Project of Institute for Basic Science funded by Ministry of Science, ICT, and Future Planning and National Research Foundation of Korea (2013M7A1A1075764), by the INNOPOLIS Foundation of Korea funded by the Ministry of Science  
Figure 20: Installation of the actual _FPS_.  
and ICT (Grant No. 1711149774), and by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2022R1F1A1076188).  
**Institutional Review Board Statement:** Not applicable.  
**Informed Consent Statement:** Not applicable.  
**Data Availability Statement:** Not applicable.  
**Conflicts of Interest:** All authors declare no conflict of interest. We have read and agreed to the published version of the manuscript.