Title :
SPEAR III-a brighter source at SSRL
Author :
Hettel, R. ; Boyce, R. ; Brennan, S. ; Corbett, J. ; Cornacchia, M. ; Davies-White, W. ; Garren, A. ; Hofmann, A. ; Limborg, C. ; Nosochkov, Y. ; Nuhn, H.-D. ; Rabedeau, T. ; Safranek, J. ; Wiedemann, H.
Author_Institution :
Synchrotron Radiat. Lab., Stanford Univ., CA, USA
Abstract :
By replacing the magnets and vacuum chamber for the 3 GeV SPEAR II storage ring, the natural emittance of the machine can be reduced from 130 to 18 nm-rad and the stored current can be raised from 100 to 200 mA with a 50 h lifetime. This configuration increases focused photon flux for insertion device beamlines by an order of magnitude and the photon brightness for future undulators would exceed 1018 at 5 keV. Due to a higher critical energy, the photon flux in the 20 keV range for bending magnet beamlines increases by more than two orders of magnitude. We present preliminary SPEAR III design study results and plans to implement the facility upgrade with minimal downtime for SSRL users
Keywords :
accelerator magnets; electron accelerators; storage rings; wigglers; 200 mA; SPEAR III; SSRL; bending magnet beamlines; facility upgrade; focused photon flux; insertion device beamlines; magnets; natural emittance; photon flux; stored current; undulators; vacuum chamber; Apertures; Brightness; Lattices; Magnetic flux; Mirrors; Particle beams; Stimulated emission; Strontium; Structural beams; Undulators;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.749854
