The CLIC technology is one of the possible candidates for the next generation of high luminosity TeV e+-e- collider. As it is for all the concurrent projects, the electron and positron bunches will be a few hundred femtoseconds long and in order to ensure these challenging performances the beam emittance will be kept very small (~nm.rad). Moreover, one particularity of the CLIC design resides in its RF power source, which is based on the two beams accelerator scheme, where the RF power is produced by high current electron beams. Therefore the linac efficiency and the performances of the collider will strongly depend on the control and the quality of the Drive Beam (DB). Based on the actual parameter list, the requirements for transverse and longitudinal beam profile measurements will be presented for both the DB and the Main beam (MB). Adequate tools are currently under study in different laboratories all over the world. I will present the corresponding recent achievements, pointing out what has already been measured, what can be expected and also what are the already known limitations. The possible use of these monitors in the CLIC complex will be discussed at the end.

copy of Thibaut's transparencies (pdf format, ppt format [PowerPoint with animations, 7MB])