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SPEAR 3 upgrade project: a status report

By: Corbett, W.; Hettel, R.; Yotam, R.; Wermelskirchen, C.; Terebilo, A.; Tanabe, J.; Smith, S.; Sebek, J.; Scott, B.; Schwarz, H.; Safranek, J.; Rodriguez, P.; Ringwall, A.; Rarback, H.; Park, S.; Pappas, C.; Ortega, M.; Olsen, J.; Nosochkov, Y.; Ng, C.; Medvedko, E.; Martin, D.; Macnair, D.; Limborg, C.; Leyh, G.; Langton, J.; Kurita, N.; Fuller, R.; Akre, R.; Bellomo, P.; Boyce, R.; Cadapan, L.; Cassel, R.; Choi, B.; Dell'Orco, D.; Evans, I.; Elioff, T.;

2001 / IEEE / 0-7803-7191-7


This item was taken from the IEEE Conference ' SPEAR 3 upgrade project: a status report ' The SPEAR 3 upgrade project at SSRL will replace the original FODO lattice with a 234-m, 18-cell DBA lattice with gradient dipoles. The new hardware draws heavily on PEP-II B-Factory technology: a copper vacuum chamber, IGBT power supply technology, and mode-damped rf cavities to reach beam currents up to 500 mA at 3 GeV. First article magnets, supports, girders, vacuum chambers, pumps and RF components have been fabricated and a prototype girder assembly is nearing completion. I&C systems, radiation shielding and utility upgrades are in progress. In this paper we report on the status of the main accelerator subsystems.