CTF3 prototypes: design, tests and measurements

The high efficiency in the 30 GHz power production is maintained if the beam quality is preserved along the rings and the transfer lines of the CLIC Test Facility (CTF3) compressor system. The energy loss and energy spread, caused by vacuum chamber components coupling impedance and by coherent synchrotron radiation (CSR) emission, must be minimized. The magnetic layouts of the first ring of the compressor system, called delay loop (DL) and of the transfer line between the Linac and DL are presented. Tests and measurements on several vacuum chamber components prototypes are reported. The 3 GHz RF deflectors, that will provide the injection in the combiner ring, have been studied, realized, tested, installed and successfully used in the first interlaced bunch trains injection in the CTF3 preliminary phase. A standing wave 1.5 GHz RF deflector for injection into the delay loop is proposed.