Tracking Studies to Determine the Required Wiggler Aperture forthe ILC Damping Rings

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The injection efficiency of an ILC damping ring is closely tied to its acceptance. To maximize both, one wants a physical aperture as large as possible in the wiggler magnets, as these are likely to be the limiting physical apertures in the ring. On the other hand, a small aperture in the wiggler magnets is needed to achieve the required field profile, a high magnetic field that is very linear over the whole physical aperture of the magnet. Tracking studies were done for all proposed ILC damping ring lattices to determine their required physical apertures. Although a half-aperture of 8 ... continued below

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Reichel, I. & Wolski, A. June 21, 2006.

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The injection efficiency of an ILC damping ring is closely tied to its acceptance. To maximize both, one wants a physical aperture as large as possible in the wiggler magnets, as these are likely to be the limiting physical apertures in the ring. On the other hand, a small aperture in the wiggler magnets is needed to achieve the required field profile, a high magnetic field that is very linear over the whole physical aperture of the magnet. Tracking studies were done for all proposed ILC damping ring lattices to determine their required physical apertures. Although a half-aperture of 8 or 10mm had been proposed, our studies showed that, for most lattices, a 16mm half-aperture is required. For some lattices a 12mm half aperture might suffice. We present here the results of our studies, which led to adopting a 16mm half-aperture in the current ILC damping ring baseline design.

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  • European Particle Accelerator Conference 2006,Edinburgh, UK, June 26th-30th 2006

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  • Report No.: LBNL--59354
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 889250
  • Archival Resource Key: ark:/67531/metadc884699

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  • June 21, 2006

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  • Sept. 21, 2016, 2:29 a.m.

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  • Sept. 29, 2016, 7:15 p.m.

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Reichel, I. & Wolski, A. Tracking Studies to Determine the Required Wiggler Aperture forthe ILC Damping Rings, article, June 21, 2006; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc884699/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.