Energy acceptance and Touschek lifetime calculations for the SOLEIL project

Touschek scattering is an important beam lifetime limiting effect for the SOLEIL storage ring and the dominant one for high single bunch current operation. The Touschek relevant energy acceptance may be determined by the radiofrequency system, dynamic aperture or vacuum chamber physical aperture. In the latter two cases, Touschek induced betatron oscillations must be considered. We present energy acceptance and Touschek lifetime calculations for SOLEIL in the presence of these three limitations taking into account the non-linear chromatic orbit as well as energy variation of the optical functions. In light of these considerations, Touschek lifetime lattice optimization will be discussed.