Title :
Beam stability in the drive-beam decelerator of CLIC using structures of high-order symmetry
Author :
Millich, A. ; Riche, A. ; Schulte, D.
Author_Institution :
CERN, Geneva, Switzerland
Abstract :
The RF power necessary to accelerate the main beam of the Compact Linear Collider (CLIC) is produced by decelerating a high-current drive beam in power extraction and transfer structures (PETS). The reference structure is not cylindrically symmetric but has longitudinal waveguides carved into the inner surface. This gives rise to a transverse component of the main longitudinal mode which can not be damped, in contrast to the transverse dipole wakefield. The field is non-linear and couples the motion of the particles in the two planes. Limits of the stability of the decelerated beam are investigated for different structures
Keywords :
accelerator RF systems; accelerator cavities; linear colliders; particle beam stability; CLIC; Compact Linear Collider; RF power; beam stability; drive-beam decelerator; high-current drive beam; high-order symmetry structure; longitudinal mode; longitudinal waveguides; power extraction; stability limits; transfer structures; transverse component; transverse dipole wakefield; Acceleration; Colliding beam accelerators; Colliding beam devices; Linear particle accelerator; Optical coupling; Particle beams; Positron emission tomography; Radio frequency; Stability; Surface waves;
Conference_Titel :
Particle Accelerator Conference, 1999. Proceedings of the 1999
Conference_Location :
New York, NY
Print_ISBN :
0-7803-5573-3
DOI :
10.1109/PAC.1999.794285
