The Compact LInear Collider (CLIC) aims at colliding electrons and positrons at 3 TeV with vertical spot sizes of 1 nm. Strict stability tolerances must be respected in order to achieve a sufficient overlap of the two colliding beams. A stability test stand has been set up at CERN, bringing latest stabilization technology to the accelerator field. Using this technology, a CLIC prototype magnet was stabilized in a normal CERN working environment to less than 1 nm vertical rms motion above 4 Hz. The measured vibration spectra are presented. The dependence on the flow of cooling water is illustrated and results on alignment stability are shown. Detailed simulation studies are being performed in order to predict the achievable CLIC luminosity, including the measured data on magnet stability, the beam-beam interaction, and beam-based feedbacks. First predictions are discussed.

Bunch Frequency Multiplication in the CLIC Test Facility CTF3:

The aim of the CLIC Test Facility CTF3 at CERN is to prove the feasibility of key issues of the two-beam based Compact Linear Collider (CLIC) study.  In particular, it addresses the generation of a drive beam with the appropriate time structure to produce high power RF pulses at a frequency of 30 GHz.
The first major goal of CTF3 was to demonstrate at low charge the combination of successive bunch trains by RF deflectors in an isochronous ring.  This bunch frequency multiplication has been successfully performed for various combination factors up to five.  We will present these results together with other related beam measurements.

copy of Frank's transparencies (pdf format)