Reaching the Soft X-ray Diffraction Limit: ALS-U, A Revolutionary Upgrade of the ALS
by
Christoph Steier(LBNL)
→
US/Pacific
Auditorium (Building 50)
Auditorium
Building 50
Description
Improvements in brightness and coherent flux of more than two orders of magnitude over operational storage ring based light sources are possible using multi bend achromat lattice designs. These improvements can be implemented as upgrades of existing facilities, like the proposed upgrade of the Advanced Light Source, making use of the existing infrastructure, thereby reducing cost and time needed to reach full scientific productivity on a large number of beamlines. An R&D program funded by internal laboratory funds was started at LBNL to further develop the technologies necessary for diffraction-limited storage rings (DLSR). It initially involved five areas, and focuses on the specific needs of soft x-ray facilities: vacuum system/NEG coating of small chambers, injection/pulsed magnets, RF systems/bunch lengthening, magnets/radiation production with advanced radiation devices, and beam physics design optimization. This talk will introduce the general ideas behind the upgrades, describe the engineering and physics challenges and show progress of the R&D program.
