Single-particle dynamics in a nonlinear accelerator lattice [electronic resource] : attaining a large tune spread with octupoles in IOTA.
Accelerator Modelling And Simulations (Multi-Particle Dynamics; Single-Particle Dynamics); Beam Dynamics; Beam Optics.
Saved in:
| Online Access: |
Online Access (via OSTI) |
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| Corporate Author: | |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. High Energy Physics Division ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2017.
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| Subjects: |
MARC
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| 086 | 0 | |a E 1.99: arxiv:1604.08565 | |
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| 245 | 0 | 0 | |a Single-particle dynamics in a nonlinear accelerator lattice |h [electronic resource] : |b attaining a large tune spread with octupoles in IOTA. |
| 260 | |a Washington, D.C. : |b United States. Department of Energy. High Energy Physics Division ; |a Oak Ridge, Tenn. : |b distributed by the Office of Scientific and Technical Information, U.S. Department of Energy, |c 2017. | ||
| 300 | |a Article No. P04008 : |b digital, PDF file. | ||
| 336 | |a text |b txt |2 rdacontent. | ||
| 337 | |a computer |b c |2 rdamedia. | ||
| 338 | |a online resource |b cr |2 rdacarrier. | ||
| 500 | |a Published through SciTech Connect. | ||
| 500 | |a 04/10/2017. | ||
| 500 | |a "fermilab-pub--16-137-ad-apc" | ||
| 500 | |a " arxiv:1604.08565" | ||
| 500 | |a "1452854" | ||
| 500 | |a Journal of Instrumentation 12 04 ISSN 1748-0221 AM. | ||
| 500 | |a S. A. Antipov; S. Nagaitsev; A. Valishev. | ||
| 520 | 3 | |a Fermilab is constructing the Integrable Optics Test Accelerator (IOTA) as the centerpiece of the Accelerator R&D Program towards high-intensity circular machines. One of the factors limiting the beam intensity in present circular accelerators is collective instabilities, which can be suppressed by a spread of betatron frequencies (tunes) through the Landau damping mechanism or by an external damper, if the instability is slow enough. The spread is usually created by octupole magnets, which introduce the tune dependence on the amplitude and, in some cases, by a chromatic spread (tune dependence on particle's momentum). The introduction of octupoles usually lead to a resonant behavior and a reduction of the dynamic aperture. One of the goals of the IOTA research program is to achieve a high betatron tune spread, while retaining a large dynamic aperture using conventional octupole magnets in a special but realistic accelerator configuration. In this report, we present results of computer simulations of an electron beam in the IOTA by particle tracking and the Frequency Map Analysis. The results show that the ring's octupole magnets can be configured to provide a betatron tune shift of 0.08 (for particles at large amplitudes) with the dynamical aperture of over 20 beam sigma for a 150-MeV electron beam. The influence of the synchrotron motion, lattice errors, and magnet imperfections is insignificant for the parameters and levels of tolerances set by the design of the ring. Here, the described octupole insert could be beneficial for suppression of space-charge induced instabilities in high intensity machines. | |
| 520 | 0 | |a Accelerator Modelling And Simulations (Multi-Particle Dynamics; Single-Particle Dynamics); Beam Dynamics; Beam Optics. | |
| 536 | |b AC02-07CH11359. | ||
| 650 | 7 | |a Particle Accelerators. |2 edbsc. | |
| 710 | 2 | |a Fermi National Accelerator Laboratory. |4 res. | |
| 710 | 1 | |a United States. |b Department of Energy. |b High Energy Physics Division. |4 spn. | |
| 710 | 1 | |a United States. |b Department of Energy. |b Office of Scientific and Technical Information. |4 dst. | |
| 856 | 4 | 0 | |u http://www.osti.gov/scitech/biblio/1331786 |z Online Access (via OSTI) |
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