Simulations of octupole compensation of head-tail instability at the Tevatron [electronic resource].
- Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 2003. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 56 Kilobytes pages : digital, PDF file
- Additional Creators:
- Fermi National Accelerator Laboratory, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- The proton lifetime in the Tevatron depends sensitively on chromaticities. Too low chromaticities can make the beam unstable due to the weak head-tail instability. One way to compensate this effect is to introduce octupoles to create a larger amplitude dependent betatron tune spread. However, the use of octupoles will also introduce additional side effects such as second order chromaticity, differential tune shifts and chromaticities on both proton and anti-proton helices. The non-linear effects may also reduce the dynamic aperture. There are 67 octupoles in 4 different circuits in the Tevatron which may be used for this purpose. We report on a simulation study to find the best combinations of polarities and strengths of the octupoles.
- Published through SciTech Connect., 05/28/2003., "fermilab-conf-03/090-t", PAC03, Portland, OR (US), 05/11/2003--05/16/2003., and Tanaji Sen; Meiqin Xiao; Frank Schmidts.
- Funding Information:
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