Damping rates of the SRRC storage ring

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The SRRC storage ring is a low emittance synchrotron radiation machine with nominal operation energy 1.3 GeV. The design damping time due to synchrotron radiation is 10.7, 14.4, 8.7 ms for the horizontal, vertical and longitudinal plane, respectively. The authors measured the real machine damping time as a function of bunch current, chromaticity, etc. To damp the transverse beam instability, especially in the vertical plane, they need to increase chromaticity to large positive value. The damping rates are much larger than the design values. Landau damping contribution in the longitudinal plane is quite large, especially in the multibunch mode. The ... continued below

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3 p.

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Hsu, K. T.; Kuo, C. C.; Lau, W. K. & Weng, W. T. June 1, 1995.

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Description

The SRRC storage ring is a low emittance synchrotron radiation machine with nominal operation energy 1.3 GeV. The design damping time due to synchrotron radiation is 10.7, 14.4, 8.7 ms for the horizontal, vertical and longitudinal plane, respectively. The authors measured the real machine damping time as a function of bunch current, chromaticity, etc. To damp the transverse beam instability, especially in the vertical plane, they need to increase chromaticity to large positive value. The damping rates are much larger than the design values. Landau damping contribution in the longitudinal plane is quite large, especially in the multibunch mode. The estimated synchrotron tune spread from the Landau damping is in agreement with the measured coherent longitudinal coupled bunch oscillation amplitude.

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3 p.

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INIS; OSTI as DE95012315

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  • 16. Institute of Electrical and Electronic Engineers (IEEE) particle accelerator conference, Dallas, TX (United States), 1-5 May 1995

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  • Other: DE95012315
  • Report No.: BNL--61788
  • Report No.: CONF-950512--125
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 72993
  • Archival Resource Key: ark:/67531/metadc707947

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  • June 1, 1995

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  • Sept. 12, 2015, 6:31 a.m.

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  • Nov. 19, 2015, 6:53 p.m.

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Hsu, K. T.; Kuo, C. C.; Lau, W. K. & Weng, W. T. Damping rates of the SRRC storage ring, article, June 1, 1995; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc707947/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.