Beam motions near separatrix

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Experimental data on particle motion near the separatrix of the one dimensional (1-D) fourth-integer islands are an-alyzed. When the beam bunch is initially kicked to the separatrix orbit, we observed a strong decoherence in the coherent betatron motion. We find that, through intensive particle tracking simulation analysis, the decoherence has resulted from the beam being split into beamlets in the beta-tron phase space. However, we also observe an unexpected recoherence of coherence signal, which may result form a modulated closed orbit or the homoclinic structure near the separatrix.

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465 Kilobytes

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al., M. Ball et May 4, 1999.

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Description

Experimental data on particle motion near the separatrix of the one dimensional (1-D) fourth-integer islands are an-alyzed. When the beam bunch is initially kicked to the separatrix orbit, we observed a strong decoherence in the coherent betatron motion. We find that, through intensive particle tracking simulation analysis, the decoherence has resulted from the beam being split into beamlets in the beta-tron phase space. However, we also observe an unexpected recoherence of coherence signal, which may result form a modulated closed orbit or the homoclinic structure near the separatrix.

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465 Kilobytes

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  • 18th Particle Accelerator Conference, New York, New York, March 29-April 2, 1999

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  • Other: DE00006585
  • Report No.: FERMILAB-Conf-99/113-T
  • Grant Number: NONE
  • Office of Scientific & Technical Information Report Number: 6585
  • Archival Resource Key: ark:/67531/metadc708891

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  • May 4, 1999

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 18, 2016, 2:32 p.m.

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al., M. Ball et. Beam motions near separatrix, article, May 4, 1999; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc708891/: accessed August 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.