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Electromagnetic Beam Position Monitoring Model for Particle Energy Linear Accelerator

机译：粒子能直线加速器电磁束位置监测模型

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摘要

Beam position monitoring (BPM) systems are crucial in particle acceleration facilities such as linear and circular accelerators. They are used to maintain a stable and precise beam position to achieve a high level of beam quality. BPMs are also essential for accelerator commissioning, performance optimisation, and fault analysis. Beam functional properties information, such as displacement from the desired axis, information about synchrotron oscillations and betatron movements can be derived from data gathered in BPM systems. Medical linear accelerators (linacs) also employ beam position measurements to ensure optimal generation of treatment radiation. The most common form of analysis is to use a multi-physics based approach and model the beam as a stream of electrons, often involving Monte Carlo implementation - an accurate but computationally expensive approach. This paper presents a simple, but robust and efficient, CST microwave model of the linear accelerator (linac) beam, generated using a simplified approach to beam modeling that uses a conducting filament in place of the particle. This approach is validated by comparison with published work. An approach to BPM using the method applied in this paper opens up opportunities to further analyze the overall design and that of components of particle accelerator systems using commonly available full-wave electromagnetic simulators without the need to include specific particle solutions.
机译：光束位置监控（BPM）系统在粒子加速设备（例如线性和圆形加速器）中至关重要。它们用于保持稳定且精确的光束位置，以实现高水平的光束质量。 BPM对于加速器调试，性能优化和故障分析也至关重要。可以从BPM系统中收集的数据中得出束功能特性信息，例如距所需轴的位移，有关同步加速器振荡和电子感应加速器运动的信息。医用线性加速器（直线加速器）还采用光束位置测量来确保最佳产生治疗辐射。分析的最常见形式是使用基于多物理场的方法，并将射束建模为电子流，通常涉及蒙特卡洛实现-一种精确但计算量大的方法。本文介绍了线性加速器（直线加速器）束的简单但健壮和有效的CST微波模型，该模型是使用简化的束建模方法生成的，该方法使用导电丝代替粒子。通过与已发表的作品进行比较，验证了该方法。使用本文中使用的方法的BPM方法为进一步分析总体设计以及使用通用的全波电磁模拟器的粒子加速器系统的组件提供了机会，而无需包括特定的粒子解决方案。

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