Panoply of insertion devices for SOLEIL II

Abstract SOLEIL II is a project aiming at upgrading the present SOLEIL synchrotron to a fourth-generation light source. The photon spectral performance parameters such as brightness and flux density will be highly increased by a drastic decrease of the natural horizontal emittance to below 100 pm.rad. The goal will be accomplished by an increase of the number of magnets and the compactness of the equipment. Big efforts have been made in designing the lattice to preserve the space for present in-vacuum and cryogenic insertion devices. Nonetheless in most cases the space available for the other types of insertion devices will be reduced by 30 %, making difficult to cover the present wide spectral range required for the beamlines, currently achieved using juxtaposed undulators. To meet this challenge new innovative solutions have been developed, prototyped, and are presently on test at SOLEIL. The report will give an overview of the insertion devices portfolio which will be installed from the SOLEIL II start.