Operational Performance and Improvements to the RF Power Sources for the Compact Linear Collider Test Facility (CTF3) at CERN

Summary form only given. The CERN CTF3 facility is being used to test and demonstrate key technical issues for the CLIC (compact linear collider). Pulsed RF power sources are essential elements in this test facility. Klystrons at S-band (3 GHz), in conjunction with pulse compression systems, are used to power the drive beam accelerator (DBA). An L-band RF system, including broadband travelling wave tubes (TWTs) is used for beam bunching with "phase coded" sub pulses in the injector. In addition, a narrow band high power L-band klystron is used to power the transverse 1.5 GHz RF deflector in the delay Loop immediately after the DBA. This paper describes these different systems and discusses their operational performance