Dispersion in the presence of strong transverse wakefields

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To minimize emittance growth in a long linac, it is necessary to control the wakefields by correcting the beam orbit excursions. In addition, the particle energy is made to vary along the length of the bunch to introduce a damping, known as the BNS damping, to the beam break-up effect. In this paper, the authors use a two-particle model to examine the relative magnitudes of the various orbit and dispersion functions involved. The results are applied to calculate the effect of a closed orbit bump and a misaligned structure. It is shown that wake-induced dispersion is an important contribution to ... continued below

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5 p.

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Assmann, R. & Chao, A. July 1, 1997.

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Description

To minimize emittance growth in a long linac, it is necessary to control the wakefields by correcting the beam orbit excursions. In addition, the particle energy is made to vary along the length of the bunch to introduce a damping, known as the BNS damping, to the beam break-up effect. In this paper, the authors use a two-particle model to examine the relative magnitudes of the various orbit and dispersion functions involved. The results are applied to calculate the effect of a closed orbit bump and a misaligned structure. It is shown that wake-induced dispersion is an important contribution to the beam dynamics in long linacs with strong wakefields like SLC.

Physical Description

5 p.

Notes

INIS; OSTI as DE97008412

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  • 17. IEEE particle accelerator conference, Vancouver (Canada), 12-16 May 1997

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  • Other: DE97008412
  • Report No.: SLAC-PUB--7581
  • Report No.: CONF-970503--205
  • Grant Number: AC03-76SF00515
  • Office of Scientific & Technical Information Report Number: 521628
  • Archival Resource Key: ark:/67531/metadc694434

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  • July 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 5, 2016, 6:57 p.m.

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Assmann, R. & Chao, A. Dispersion in the presence of strong transverse wakefields, article, July 1, 1997; Menlo Park, California. (digital.library.unt.edu/ark:/67531/metadc694434/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.