| Paper | Title | Page |
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| THPMN115 | Injection and Extraction Lines for the ILC Damping Rings | 2984 |
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Funding: This work was supported by the U. S. Department of Energy under Contract No. DE-AC02-05CH11231. The current design for the injection and extraction lines into and out of the ILC Damping Rings is presented as well as the design for the abort line. Due to changes of the geometric boundary conditions by other subsystems of the ILC a modular approach has been used to be able to respond to recurring layout changes while reusing previously designed parts. Available beam dynamics studies for those lines are discussed. |
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| THPMN116 | Frequency Map Studies for the ILC Damping Rings | 2987 |
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Funding: This work was supported by the U. S. Department of Energy under Contract No. DE-AC02-05CH11231. Designing a lattice with sufficient dynamic aperture for the ILC Damping Rings is very challenging as the lattice needs to provide a small equilibrium emittance and at the same time a large aperture for the injected beam including a large momentum acceptance. In addition outside constraints have forced layout changes in the damping ring. Some of the layout changes had an impact on the dynamic aperture. In order to better understand the changes in dynamic aperture, frequency maps are studied. Those studies can help in identifying the reason for the changed dynamic aperture and in finding a good location for the betatron tunes and determining an upper limit for the chromaticities. A summary of recent studies and suggestions improving the dynamic aperture by choosing a different tune are presented. |