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Self-Bunching of a Circulating Beam in the U-70 Proton Synchrotron

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Abstract

The results of an investigation of self-bunching of the U-70 proton synchrotron beam are presented. The self-bunching arises on the top magnetic-field plateau and is caused by the interaction of the beam with the accelerating resonators from which the rf voltage was removed. A specific feature of self-bunching is its anomalously low threshold. It is shown that this is due to the filamentary beam structure, which appears during drfiting of the bunches, and the threshold is determined not by the total but rather the local momentum spread in each filament, continuously decreasing during drifting of the bunches. A novel method used in U-70 to suppress self-bunching is described.

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REFERENCE

  1. E. Keil and W. Schnell, “Concerning longitudinal stability in the ISR,” Preprint CERN/ISR-TH-RF/69–48, Geneva (1969).

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Authors and Affiliations

  1. State Science Center of the Russian Federation, Institute of High-Energy Physics, Russia

    V. A. Kalinin, A. Yu. Malovitskii, I. I. Sulygin & E. F. Troyanov

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  1. V. A. Kalinin
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  2. A. Yu. Malovitskii
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  3. I. I. Sulygin
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  4. E. F. Troyanov
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Kalinin, V.A., Malovitskii, A.Y., Sulygin, I.I. et al. Self-Bunching of a Circulating Beam in the U-70 Proton Synchrotron. Atomic Energy 94, 33–35 (2003). https://doi.org/10.1023/A:1023490503132

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  • DOI: https://doi.org/10.1023/A:1023490503132

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