基于机器学习的轨道校正方法

Orbit correction based on machine learning

  • 摘要: 轨道校正是加速器束流调节最基本的步骤之一,也是目前各加速器实验室共同面对的问题之一。在传统方法中,线性代数工具被应用于各种类型的响应矩阵,以解决响应矩阵的奇异性等问题。提出一种基于机器学习的加速器轨道校正方法,可以避免处理响应矩阵的问题通过直接读取BPM数据和校正磁铁强度值实时构建机器学习模型快速地对轨道进行修正。对机器学习的轨道校正方法进行了介绍,并从数学公式、算法模型、在模拟和真实数据上的测试等方面对该方法进行了讨论。结果表明,在误差范围内该方法能有效的对加速器束流轨道进行校正。

     

    Abstract: Orbit correction is one of the most fundamental processes used for beam control in accelerators. Algorithms have been developed at various laboratories to meet specific demands. Typically, linear algebraic tools are applied to various response matrices to solve related problems. However, there are still many problems faced by orbit correction algorithms such as lengthy measurement and computation time. A new approach based on machine learning to develop an orbit correction program is introduced. In this method a machine learning program is trained with correctors data and BPMs data for applying to orbit correction. Mathematical formulation, algorithms prototyped and tested on simulated and real data, and future possibilities are discussed.

     

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