beam profile, Delay Loop, OTR, ZEMAX) LAYOUT OF THE LONG OPTICAL LINES IN CTF3

The Compact Linear Collider (CLIC) project is a multi-TeV electron-positron collider for particle physics based on an innovative two-beam acceleration concept. A high-intensity drive beam powers the main beam of a high-frequency (30 GHz) linac with a gradient of 150 MV/m, by means of transfer structure sections. The aim of the CLIC Test Facility (CTF3) is to make exhaustive tests of the main CLIC parameters and to prove the technical feasibility. One of the points of particular interest is the demonstration of bunch train compression in the Delay Loop (DL) and the combiner ring (CR). Among others, time resolved measurements with a streak camera are planned to monitor bunch separation, to check the machine's isochronicity and to study inter-bunch behavior. This article gives an overview of the design considerations of the long optical lines and shows first results obtained during the last machine run in 2005