Overview of collective effects in the NLC main damping rings

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The present design for the NLC Main Damping Rings (MDRs) meets the specifications for acceptance and extracted emittance, in the limit of zero current. However, the relatively large bunch charge and moderate energy mean that a variety of collective effects can impact the beam dynamics, leading to loss of stability or increase of equilibrium emittance. These effects include intrabeam scattering, impedance from numerous sources, fast ion instability, and (in the positron ring) electron cloud. In this note, we survey the expected impact on damping ring performance from each of a number of collective effects, and discuss the priorities for future ... continued below

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Wolski, A. & de Santis, S. May 30, 2002.

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The present design for the NLC Main Damping Rings (MDRs) meets the specifications for acceptance and extracted emittance, in the limit of zero current. However, the relatively large bunch charge and moderate energy mean that a variety of collective effects can impact the beam dynamics, leading to loss of stability or increase of equilibrium emittance. These effects include intrabeam scattering, impedance from numerous sources, fast ion instability, and (in the positron ring) electron cloud. In this note, we survey the expected impact on damping ring performance from each of a number of collective effects, and discuss the priorities for future studies in this area.

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INIS; OSTI as DE00799609

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  • 8th European Particle Accelerator Conference, Paris (FR), 06/03/2002--06/07/2002

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  • Report No.: LBNL--50510
  • Report No.: CBP Note - 425
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 799609
  • Archival Resource Key: ark:/67531/metadc741600

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  • May 30, 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • April 4, 2016, 1:50 p.m.

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Wolski, A. & de Santis, S. Overview of collective effects in the NLC main damping rings, article, May 30, 2002; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc741600/: accessed September 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.