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

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:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
  2. Cornell Univ., Ithaca, NY (United States). Dept. of Mathematics, Dept. of Mechanical and Aerospace Engineering
Publication Date:
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; TRN: US1702231
Grant/Contract Number:  
SC0012704
Resource Type:
Journal Article: Published Article
Journal Name:
New Journal of Physics
Additional Journal Information:
Journal Volume: 19; Journal Issue: 9; Journal ID: ISSN 1367-2630
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; NSLS-II; synchrotron; oscillation; National Synchrotron Light Source II

Citation Formats

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 States: N. p., 2017. Web. doi:10.1088/1367-2630/aa8742.
Wang, G. M., Shaftan, T., Smaluk, V., Li, Y., & Rand, R.. Lossless crossing of a resonance stopband during tune modulation by synchrotron oscillations. United States. doi:10.1088/1367-2630/aa8742.
Wang, G. M., Shaftan, T., Smaluk, V., Li, Y., and Rand, R.. Thu . "Lossless crossing of a resonance stopband during tune modulation by synchrotron oscillations". United States. doi:10.1088/1367-2630/aa8742.
@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 States},
year = {Thu Sep 14 00:00:00 EDT 2017},
month = {Thu Sep 14 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1088/1367-2630/aa8742

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