加速器中基于条带检测器的新束流诊断技术研究

This project aims to research new beam diagnostic technology based on stripline monitor in accelerator. The non-intercepting stripline monitor can measure more beam parameters. This research project mainly includes the research of the beam transverse size/emittance and beam energy spread diagnostic technology based on stripline monitor in injector, the research of the beam transverse size/emittance and beam energy spread diagnostic technology based on stripline monitor in storage ring, and the research of a new resonant stripline monitor in FEL. On the basis of the theory analysis and simulation calculation for the eight axis symmetric eight electrodes stripline monitor, a new kind of four axis symmetric eight electrodes energy spread monitor is proposed, which can be used to improve the measurement sensitivity and accuracy. For the online measurement of the beam emittance and energy spread in storage ring, the diagnostic technology using the stipline monitors in the non-dispersive section and dispersive section is proposed. To improve the beam position resolution in FEL, a novel resonant stripline monitor is proposed. To reduce the influence of the beam position on the quadrupole component measurement for the stripline monitor, a new log-ratio method for extracting the quadrupole component of the stipline monitor is proposed. In this basis, the research of some experiments will be carried out, which will improve the performance of accelerators. The achievements in this research can be used not only in the HLS and the infrared free electron laser light source, and can be widely applied in the other similar accelerators.

本项目旨在进行电子加速器中基于条带检测器的新束流诊断技术研究。条带检测器作为非拦截式检测器，可以进行多束流参数的测量。本项目研究主要包括注入器和储存环中基于条带检测器的束流横向尺寸和发射度及能散的非拦截诊断技术研究以及FEL装置中新型谐振条带检测器的研究。在对现有用于注入器能散测量的八轴对称八电极检测器分析和模拟计算基础上，提出了一种新型四轴对称八电极能散检测器，可以提高测量灵敏度和精度。为了在线测量储存环的束流发射度和能散，提出了在消色散和色散段安装条带检测器的诊断技术。为了提高FEL装置中束流位置测量分辨率，提出了一种新型谐振条带检测器。为了减小条带检测器中束流位置对四极分量测量的影响，提出了一种新的对数比提取条带检测器四极分量的方法。在此基础上开展相关实验研究，为提高加速器性能发挥重要作用。该项研究成果不仅可应用于合肥光源和红外自由电子激光光源中，而且可广泛应用于国内外同类加速器中。

本项目进行了电子加速器中基于条带检测器的新束流诊断技术研究。条带检测器作为非拦截式检测器，可以进行多束流参数的测量。本项目研究主要包括注入器和储存环中基于条带检测器的束流横向尺寸和发射度及能散的非拦截诊断技术研究以及FEL装置中新型谐振条带检测器的研究。在对现有用于注入器能散测量的八轴对称八电极检测器分析和模拟计算基础上，提出了一种新型四轴对称八电极能散检测器，可以提高测量灵敏度和精度。为了在线测量储存环的束流发射度和能散，提出了在消色散和色散段安装条带检测器的诊断技术。为了提高FEL装置中束流位置测量分辨率，提出了一种新型谐振条带检测器。为了减小条带检测器中束流位置对四极分量测量的影响，提出了一种新的对数比提取条带检测器四极分量的方法。在此基础上开展相关实验研究，为提高加速器性能发挥重要作用。在国内外杂志和国际会议在发表了23篇标注该基金资助的高水平论文(1篇SCI检索和10篇EI检索)，申请发明专利7项(3项已授权)，指导毕业博士3名和毕业硕士3名，指导在读博士4名和在读硕士3名。该项研究成果不仅可应用于合肥光源和红外自由电子激光光源中，而且可广泛应用于国内外同类加速器中。