To better serve an expanding user community, SSRL replaced all technical systems in the SPEAR3 upgrade project in 2003. The 4-year, $58M accelerator upgrade was funded jointly by the DOE and NIH. The main goals were to increase photon flux and provide stable photon beams to the user community. To achieve these goals, SSRL replaced the entire tunnel floor, support rafts, vacuum chamber, magnet lattice, RF system, power supplies and cable plant in a 6-month shutdown period. The new 3 GeV SPEAR3 light source has 10 nm-rad emittance, up to 500 ma circulating current and straight sections available for 14 insertion devices and up to 27 experimental stations. Present developments include a program to deliver trickle-charge, top-up injection with stable, high-brightness photon beams and studies of non-linear storage ring dynamics.

Group Contacts

Schmerge, John SPEAR3 PCT Administration Directory Information
Gierman, Stephen SPEAR3 PCT Accel Physics Directory Information	Huang, Xiaobiao SPEAR3 PCT Accel Physics Directory Information
Safranek, James A. SPEAR3 PCT Accel Physics Directory Information	Tian, Kai SPEAR3 PCT Accel Physics Directory Information
Martin, Donald J. SPEAR3 PCT Technology Directory Information	Ortiz, Ramon R. SPEAR3 PCT Technology Directory Information
Park, Sam SPEAR3 PCT Technology Directory Information	Sebek, Jim SPEAR3 PCT Technology Directory Information
Wachter, John V. SPEAR3 PCT Technology Directory Information	Wallters, Scott C. SPEAR3 PCT Technology Directory Information
Corbett, Jeff SPEAR3 PCT Technology Directory Information

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