Title :
Fast closed orbit control in the SLS storage ring
Author :
B?¶ge, M. ; Dehler, M. ; Schilcher, T. ; Schlott, V. ; Ursic, R.
Author_Institution :
Paul Scherrer Inst., Villigen, Switzerland
fDate :
6/21/1905 12:00:00 AM
Abstract :
Concepts for a fast orbit feedback in the SLS storage ring are presented. The Singular Value Decomposition (SVD) based orbit correction scheme is supposed to fight orbit oscillations up to 100 Hz stabilizing the orbit to 1/10th of the beam sigma at the locations of the insertion devices. For an emittance ratio of 1%, this corresponds to 1 μm tolerance in the vertical plane. In order to achieve this high accuracy strong restrictions are imposed on the residual noise of the beam position monitoring and the correction system. Theoretical estimates for the feedback gain are made using a simplified feedback model. The proposed layout of the feedback electronics based on the SLS digital BPM system is also described
Keywords :
accelerator control systems; beam handling techniques; electron accelerators; feedback; singular value decomposition; storage rings; SLS storage ring; beam position monitoring; fast closed orbit control; feedback electronics; feedback gain; insertion devices; singular value decomposition based orbit correction scheme; Crosstalk; Extraterrestrial measurements; Laser sintering; Lattices; Motion measurement; Optical coupling; Optical feedback; Stability; Storage rings; Structural beams;
Conference_Titel :
Particle Accelerator Conference, 1999. Proceedings of the 1999
Print_ISBN :
0-7803-5573-3
DOI :
10.1109/PAC.1999.795471
