Accelerator physics summary & report on UCLC + LCRD R&D ...

Injection/extraction from trailing edge of a train (J. Rogers)Advantages:• Bunches are always extracted and injected at the end of a bunch train, so theinjection/extraction kickers need only have a fast rise time. The damping ringcan be much smaller than the dogbone design.• Positron bunch production rate is greatly reduced, allowing use of aconventional positron source.Disadvantage:An additional small ring is required.UCLC 2.34 progress:simulations, as well as CESR-c machine studies concerning dampingring issues. Some novel designs for damping rings being considered.G. Gollin, 1/10/04 ALCPG04 <strong>Accelerator</strong> R&D <strong>summary</strong> 30