Title :
Optimization of chromatic optics near the half integer in PEP-II
Author :
Yocky, G. ; Cai, Y. ; Decker, F.J. ; Nosochkov, Y. ; Wienands, U. ; Raimondi, P.
Author_Institution :
SLAC, Menlo Park
Abstract :
The PEP-II collider has benefited greatly from the correction of the chromatic functions. By optimizing sextupole family strengths, it is possible to correct the non-linear chromaticity, the chromatic beta, and the second order dispersion in both the LER and HER. Having implemented some of these corrections, luminosity was improved in PEP-II by almost 10%.
Keywords :
electron accelerators; optimisation; particle beam diagnostics; storage rings; BPM orbit; HER; LER; PEP-II collider; chromatic beta; chromatic optics; half integer; luminosity; nonlinear chromaticity; optimization; second order dispersion; sextupole family strengths; Bandwidth; Dispersion; Energy measurement; Extraterrestrial measurements; Gain measurement; Lattices; Nonlinear optics; Packaging; Phase measurement; Radio frequency;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4440907
