Varying chromaticity: A damping mechanism for the transverse head-tail instability
Journal Article
·
· Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
- Department of Physics, University of California at Berkeley, Berkeley, California 94720 (United States)
- Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
A detailed analytical and numerical study of the suppression of the transverse head-tail instability by modulating the chromaticity over a synchrotron period is presented. We find that a threshold can be developed, and it can be increased to a value larger than the strong head-tail instability threshold. The stability criterion derived agrees very well with the simulations. The underlying physical mechanisms of the damping scheme are rotation of the head-tail phase such that the instability does not occur, and Landau damping due to the incoherent betatron tune spread generated by the varying chromaticity. {copyright} {ital 1997} {ital The American Physical Society}
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC03-76SF00098; FG03-95ER40936
- OSTI ID:
- 632558
- Report Number(s):
- LBNL-39717; ISSN 1063-651X; TRN: 98:006623
- Journal Information:
- Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, Vol. 56, Issue 4; Other Information: PBD: Oct 1997
- Country of Publication:
- United States
- Language:
- English
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