Title :
Optimizing energy spread in the CLIC main linac
Author :
Guignard, G. ; Fischer, C.
Author_Institution :
CERN, Geneva, Switzerland
Abstract :
A description is presented of a study leading to rigorous compensation of the longitudinal wakefields with the RF sinusoidal wave, using the CLIC (CERN Linear Collider) main-linac parameters. The dependence of the energy spread on the RF voltage phase, bunch intensity, and bunch length is discussed. Code parts have been written to compute the resulting energy distribution, average energy and energy spread in each case considered. Conditions were found that allow minimal tail population and somewhat narrow core size, so that at the optimum the energy spread is below 10/sup -3/ for 5*10/sup 9/ particles and satisfies final focus requirements. A new set of parameters more favorable to the CLIC performance and solving the problem initially addressed can be drawn out of the results.<>
Keywords :
beam handling techniques; focusing; linear accelerators; optimisation; CERN Linear Collider; CLIC main linac; RF sinusoidal wave; RF voltage phase; average energy; bunch intensity; bunch length; compensation; energy distribution; energy spread; final focus requirements; longitudinal wakefields; minimal tail population; narrow core size; optimum; Acceleration; Colliding beam devices; Distributed computing; Linear particle accelerator; Radio frequency; Tail; 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.1991.165244
