论文标题
横梁发射率通过散发辐射噪声测量
Transverse beam emittance measurement by undulator radiation power noise
论文作者
论文摘要
通常，存储环中不一致的自发同步辐射的转向转向功率波动取决于电子束的6D相空间分布。在某些情况下，如果只有一个分布的一个参数未知，则可以从这些功率波动的测得的幅度确定此参数。在这封信中，我们报告了通过这种方法在条件下，通过这种方法，通过这种方法通过常规同步灯光光束尺寸的监视器对扁平光束进行绝对测量（没有自由参数或校准）。
Generally, turn-to-turn power fluctuations of incoherent spontaneous synchrotron radiation in a storage ring depend on the 6D phase-space distribution of the electron bunch. In some cases, if only one parameter of the distribution is unknown, this parameter can be determined from the measured magnitude of these power fluctuations. In this Letter, we report an absolute measurement (no free parameters or calibration) of a small vertical emittance (5--15 nm rms) of a flat beam by this method, under conditions, when it is unresolvable by a conventional synchrotron light beam size monitor.
