Title :
Investigations on beam damping simulations and the associated model of CLIC
Author :
Guignard, G. ; Fischer, C. ; Millich, A.
Author_Institution :
CERN, Geneva, Switzerland
Abstract :
Controlling the beam stability in the CLIC main linac must be investigated numerically. Strong damping is required to cope with wakefield effects and machine imperfections require careful optics adjustments. The computation of the longitudinal and transverse wakefields has been reviewed and the Green´s functions reevaluated for the most recent main cavity design. BNS damping and autophasing with magnetic and microwave focusing could then be simulated and the dependence of the results on parameters such as the RF phases and voltage gradients could be studied. Since the emittance is extremely small, beam break-up is sensitive to unavoidable misalignments and algorithms of trajectory corrections have to be investigated.<>
Keywords :
Green´s function methods; beam handling techniques; focusing; linear accelerators; numerical analysis; physics computing; BNS damping; CLIC; Green´s functions; RF phases; autophasing; beam break-up; beam damping simulations; beam stability; longitudinal; machine imperfections; main cavity design; main linac; microwave focusing; misalignments; numerical study; optics adjustments; trajectory corrections; transverse wakefields; voltage gradients; wakefield effects; Computational modeling; Damping; Geometry; Green function; Linear particle accelerator; Optical sensors; Optical waveguides; Radio frequency; Stability; Voltage;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.165245
