X-Ray Measurements For The Determination Of Extension And Divergence Of Electron Beams In Storage Rings

Methods are presented for the determination of the vertical extension and divergence of electron beams in storage rings which also allow to obtain the vertical emittance. The ver-tical extension of the electron beam of the storage ring BESSY was measured with an X-ray slit camera. The vertical divergence was derived from the vertical angular distribution of the synchrotron radiation of the storage ring measured with either an X-ray polarimeter or an energy dispersive X-ray photon counter.