“…The success of the world's first multibend-achromat (MBA) synchrotron, MAX IV [1], has shown that new storage rings can be built with dramatically lower electron emittances, providing close to diffraction-limited photon sources. Subsequently Sirius, the new Brazilian MBA synchrotron [2], and the upgraded machine at the European Synchrotron Radiation Facility [3] have entered user operation. MBA upgrades have been approved for the Advanced Photon Source [4] and for the Swiss Light Source [5], while many other synchrotrons around the world are planning similar upgrades [6,7,8].…”