Abstract

This paper describes the modifications that can be made to the SPEAR3 baseline lattice in order to optimize the match of the electron optics for future insertion devices. The latter include an in-vacuum undulator and other devices specially tailored for hard x-ray sources. The common requirement of these sources is a small vertical electron beam size at the insertion devices that will allow the use of small gap undulators. Thus, the goal of this study is to show the feasibility of installing in SPEAR3 a lattice with vertical beta-functions at the insertion devices straight sections that are smaller than the one provided by the baseline lattice. This modification has repercussions on the hardware configuration, the dynamic aperture and the lifetime.

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