Title :
Effect of power supply ripple on emittance growth in the collider
Author :
Sen, T. ; Syphers, M.J.
Author_Institution :
Superconducting Super Collider Lab., Dallas, TX, USA
Abstract :
Power supply ripple at frequencies of 720 Hz and its harmonics is expected to affect the motion of particles in the collider. These ripple frequencies are nearly resonant with the betatron frequencies. To estimate the tolerable ripple levels, we have tracked particles through the complete nonlinear lattice for 104 turns with ripple fed from 10 different power stations and including up to 7 different ripple frequencies. We presently estimate that relative ripple amplitudes must be below the 10-8 level for there to be no significant impact on the emittance over the short term
Keywords :
nuclear electronics; power supplies to apparatus; proton accelerators; storage rings; synchrotrons; 720 Hz; SSC; betatron frequencies; collider; emittance growth; harmonics; nonlinear lattice; power supply ripple; relative ripple amplitudes; ripple frequencies; Apertures; Attenuation; Frequency estimation; Lattices; Low pass filters; Magnets; Particle tracking; Power supplies; Resonance; Resonant frequency;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.308985
