Lossless crossing of a resonance stopband during tune modulation by synchrotron oscillations

doi:10.1088/1367-2630/aa8742

Title: Lossless crossing of a resonance stopband during tune modulation by synchrotron oscillations

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Abstract

Modern high performance circular accelerators require sophisticated corrections of nonlinear lattices. The beam betatron tune footprint may cross many resonances, reducing dynamic aperture and causing particle loss. But, if particles cross a resonance reasonably fast, the beam deterioration may be minimized. This paper describes the experiments with the beam passing through a half-integer resonance stopband via tune modulation by exciting synchrotron oscillations. This is the first time that beam dynamics have been kept under precise control while the beam crosses a half-integer resonance. These results convincingly demonstrate that particles can cross the half-integer resonance without being lost if the passage is reasonably fast and the resonance stopband is sufficiently narrow.

Authors:

;

Publication Date:: 2017-09-01

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

OSTI Identifier:: 1390381

Alternate Identifier(s):: OSTI ID: 1392236

Report Number(s):: BNL-114251-2017-JA
Journal ID: ISSN 1367-2630

Grant/Contract Number:: SC0012704

Resource Type:: Published Article

Journal Name:: New Journal of Physics

Additional Journal Information:: Journal Name: New Journal of Physics Journal Volume: 19 Journal Issue: 9; Journal ID: ISSN 1367-2630

Publisher:: IOP Publishing

Country of Publication:: United Kingdom

Language:: English

Subject:: 43 PARTICLE ACCELERATORS; NSLS-II; synchrotron; oscillation; National Synchrotron Light Source II

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                    Wang, G. M., Shaftan, T., Smaluk, V., Li, Y., and Rand, R. Lossless crossing of a resonance stopband during tune modulation by synchrotron oscillations.  United Kingdom: N. p., 2017. 
        Web.  doi:10.1088/1367-2630/aa8742.

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                    Wang, G. M., Shaftan, T., Smaluk, V., Li, Y., & Rand, R. Lossless crossing of a resonance stopband during tune modulation by synchrotron oscillations.  United Kingdom.  doi:10.1088/1367-2630/aa8742.

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                    Wang, G. M., Shaftan, T., Smaluk, V., Li, Y., and Rand, R. Fri .  
        "Lossless crossing of a resonance stopband during tune modulation by synchrotron oscillations".  United Kingdom.  doi:10.1088/1367-2630/aa8742.

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@article{osti_1390381,

  title        = {Lossless crossing of a resonance stopband during tune modulation by synchrotron oscillations},

  author       = {Wang, G. M. and Shaftan, T. and Smaluk, V. and Li, Y. and Rand, R.},

  abstractNote = {Modern high performance circular accelerators require sophisticated corrections of nonlinear lattices. The beam betatron tune footprint may cross many resonances, reducing dynamic aperture and causing particle loss. But, if particles cross a resonance reasonably fast, the beam deterioration may be minimized. This paper describes the experiments with the beam passing through a half-integer resonance stopband via tune modulation by exciting synchrotron oscillations. This is the first time that beam dynamics have been kept under precise control while the beam crosses a half-integer resonance. These results convincingly demonstrate that particles can cross the half-integer resonance without being lost if the passage is reasonably fast and the resonance stopband is sufficiently narrow.},

  doi          = {10.1088/1367-2630/aa8742},

  journal      = {New Journal of Physics},

  number       = 9,

  volume       = 19,

  place        = {United Kingdom},

  year         = {2017},

  month        = {9}

}

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