【摘要】 随着技术的不断发展,近年来出现了多种加速器束团长度的测量方法,主要有条纹相机测量、迈克尔逊干涉仪测量、电光晶体测量、耦合束流频谱测量等。本文综合介绍了这些方法,并指出各种方法都有自己的优缺点及适用范围。目前国际上各大型加速器实验室普遍采用的是条纹相机测量方法,对于自由电子激光等超短束团一般都是采用光学技术、频域方法测量,有些测量法的分辨率可达到飞秒级,提供了具有更高空间分辨率、更高时间分辨率的强有力研究手段。更多还原

【Abstract】 With the improvement of technology, many new accelerator bunch length measurement methods are in-vented in recent years, such as streak camera, Martin-Puplett interferometer, electro-optic detection, frequency do-main method. Each method has its respective advantages, disadvantages and applied domains. A review on various bunch-length measurement methods is given in this paper. At present many large accelerators in the world universally use streak camera to measure bunch length. For beam bunches of ultrashort duration, optic technology and frequency domain method are adopted, and the resolution of some methods can reach to the order of femtosecond.更多还原