ALS II: The Saclay Proposal for a 2-GeV, CW Electron Facility

The transformation of the Saclay electron linac facility (ALS) into a 2 GeV, 100 μA CW electron facility is described. Polarized electrons will be available in the whole energy range. In order to reach the required performances, the linac is rebuilt with new klystrons and with the addition of a partial recirculation. The 100 % duty cycle is obtained with a stretcher ring.