Local chromatic correction scheme for LER of PEP-II
Conference
·
OSTI ID:10131733
- Lawrence Berkeley Lab., CA (United States)
- Stanford Linear Accelerator Center, Menlo Park, CA (United States)
The correction of the chromaticity of low-beta insertions in storage rings is usually made with sextupole lenses in the ring arcs. When decreasing the beta functions at the interaction point (IP), this technique becomes fairly ineffective, since it fails to properly correct the higher-order chromatic aberrations. Here we consider the approach for & PEP-II B Factory low energy ring (LER) where the chromatic effects of the quadrupole lenses generating low beta functions at the IP are corrected locally with two families of sextupoles, one family for each plane. For the IP straight section the lattice is designed in such a way that the chromatic aberrations are made small and sextupole-like aberrations are eliminated. The results of dimensional tracking simulations are presented.
- Research Organization:
- Lawrence Berkeley Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00098; AC03-76SF00515; AS03-76ER70285
- OSTI ID:
- 10131733
- Report Number(s):
- LBL--33479; ESG--245; CONF-9211172--3; ON: DE93007668
- Country of Publication:
- United States
- Language:
- English
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