Effect of feedback and noise on fast ion instability

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Description

One can use a feedback system to suppress the fast ion instability. However, the feedback noise (and also other sources of noise in the machine) continuously excites the transient oscillations in the electron beam that are amplified through the electron interaction with the ions. We calculate the equilibrium level of these oscillations under the influence of the feedback and show how they grow exponentially from the head to the tail of the bunch train in a linear theory. Nonlinear saturation effects are assume negligible.

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14 p.

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Chao, A.W. & Stupakov, G.V. July 1, 1997.

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Description

One can use a feedback system to suppress the fast ion instability. However, the feedback noise (and also other sources of noise in the machine) continuously excites the transient oscillations in the electron beam that are amplified through the electron interaction with the ions. We calculate the equilibrium level of these oscillations under the influence of the feedback and show how they grow exponentially from the head to the tail of the bunch train in a linear theory. Nonlinear saturation effects are assume negligible.

Physical Description

14 p.

Notes

INIS; OSTI as DE97008409

Source

  • MBI `97: international workshop on multi-bunch instabilities in future electron and positron accelerators, Tsukuba (Japan), 15-18 Jul 1997

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  • Other: DE97008409
  • Report No.: SLAC-PUB--7607
  • Report No.: CONF-970792--1
  • Grant Number: AC03-76SF00515
  • Office of Scientific & Technical Information Report Number: 524856
  • Archival Resource Key: ark:/67531/metadc696358

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  • July 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 5, 2016, 6:58 p.m.

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Chao, A.W. & Stupakov, G.V. Effect of feedback and noise on fast ion instability, article, July 1, 1997; Menlo Park, California. (digital.library.unt.edu/ark:/67531/metadc696358/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.