OPTICAL SYSTEM FOR MEASURING ELECTRON BUNCH LENGTH AND LONGITUDINAL PHASE SPACE AT PITZ: EXTENSION AND METHODICAL INVESTIGATIONS *

A complex optical system for measuring the electron bunch length and the longitudinal phase space using a streak camera is installed at PITZ. This system will be extended by two new branches in 2007. The physics design of the chambers containing the radiators and of the optical system is presented. The results of optical calculations of the whole system will be given. Results of methodical investigations will be shown as well, especially concerning transversal optical resolution and time dispersion