1.7 MV串列加速器调束优化研究

1.7 MV Tandem Accelerator Beam Tuning Optimization

  • 摘要: 为了改进传统的人工调束方法,提升其效率和调优品质,本文引入了差分进化(DE)算法,旨在实现调束过程的智能化。在详细阐述差分进化算法的算法架构基础上,采用Python编程语言,并利用pyEPICS接口与实验物理及工业控制系统(EPICS)建立了稳定的连接。此外,为了方便用户操作与监控,建立了直观的控制系统工作室(CSS)界面,实现了高效的上位控制和实时监测功能。本文基于1.7 MV串列加速器平台对DE算法束流调优的可行性和优化效果进行了在线验证。在实验过程中,不仅对算法的性能进行了全面的评估,还根据实验结果对算法进行了针对性的优化和改进。这些改进措施显著提升了算法的优化能力,使得束流传输效率高达80%。本文不仅展示了DE算法在束流调优中的优异性能,还为智能调束技术的发展提供了新的思路和方法。通过实现调束智能化,有望进一步提高加速器系统的运行效率和稳定性,为相关研究和实践领域提供参考。

     

    Abstract: To augment the inherent efficiency and enhance the quality of the conventional manual beam-tuning methodology, this paper presented an innovative approach through the incorporation of a differential evolution (DE) algorithm. Initially, the architectural framework of the DE algorithm was meticulously delineated, serving as the bedrock of the methodological paradigm. The DE algorithm, renowned for its robust optimization capabilities, is implemented utilizing the versatile Python programming language. This implementation leverages Python’s computational prowess and inherent flexibility, enabling the development of a sophisticated algorithmic solution. A resilient connection with the experimental physics and industrial control system (EPICS) was established via the pyEPICS interface. This integration facilitates seamless communication and precise control between the advanced DE algorithm and the intricate accelerator system. The pyEPICS interface acted as a conduit, ensuring real-time data exchange and enabling dynamic adjustments to be made based on the algorithm’s outputs. Furthermore, to augment user operation and monitoring capabilities, an intuitive control system studio (CSS) interface was devised. This interface empowered efficient upper-level control and real-time monitoring functions, thereby significantly bolstering the usability and practicality of the system. The CSS interface features a user-friendly graphical user interface (GUI) that allows operators to monitor and adjust parameters in real-time with ease, enhancing the overall user experience and operational efficiency. Using the 1.7 MV tandem accelerator platform as a testbed, rigorous experiments were conducted to ascertain the feasibility and efficacy of the DE algorithm in beam optimization. These experiments were designed to comprehensively evaluate the algorithm’s performance under various conditions and constraints. During these trials, this paper not only scrutinized the algorithm’s performance but also implemented optimizations and enhancements based on empirical findings. These refinements notably elevate the optimization capabilities of the algorithm, culminating in an impressive beam transfer efficiency of 80%. The methodology encompassed several pivotal steps. Firstly, the DE algorithm using Python was implemented, capitalizing on its robust computational capabilities and inherent flexibility. This implementation allowed for the development of a sophisticated and adaptable algorithmic solution. Subsequently, the algorithm was seamlessly integrated with the EPICS system via the pyEPICS interface, enabling precise control and monitoring of the accelerator beam. The CSS interface was meticulously developed to offer an intuitive and user-friendly graphical interface, facilitating real-time monitoring and adjustment of parameters by operators. The experimental results underscore that the exceptional performance of the DE algorithm in beam tuning. The optimized beam transfer efficiency of 80% constitutes a substantial improvement over traditional manual methods, highlighting the algorithm’s efficacy in enhancing beam-tuning processes. Furthermore, the DE algorithm’s adaptability and robustness were evident in its proficiency to handle a diverse array of beam conditions and constraints, demonstrating its versatility and practical utility. In conclusion, this study highlights the superior performance of the DE algorithm in beam tuning and proposes a novel approach for the development of intelligent beam-tuning technology. By achieving beam-modulation intelligentization, this paper strives to further enhance the efficiency and stability of accelerator systems. This research not only contributes to the advancement of beam-tuning techniques but also holds considerable promise for related fields of study and practical applications. The findings presented in this paper have the potential to stimulate further research and development in this domain, ultimately culminating in the creation of more efficient and reliable accelerator systems. This work underscores the importance of leveraging advanced algorithmic solutions and robust control systems to enhance the performance and operational efficiency of accelerator facilities.

     

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