Workshop on Accelerator R&D for Ultimate Storage Rings

Anticipated limits on machine stability and consequences on machine and beamline designs

Not scheduled

Speaker

Mr Jean-Claude DENARD (Synchrotron SOLEIL)

Description

With the small emittance the future USRs will provide, the beam stability is going to be more and more a critical issue. I will compare a ±sigma/10 position stability tolerance for a 30 keV diffraction limited photon beam to the actual beam stability of an existing light source. The future USRs might or not achieve a better stability. We will see that for acquisition times from 10 ms to about 10 s a ±100 nm stability requirement can be met. For shorter or longer acquisition times, photon beam position and angle feedback systems will likely be necessary. I briefly report on a state of the art BPM and orbit feedback system; on stable supports made of INVAR for BPM; and of a high performance hydrostatic leveling system (HLS).