Beam loading issues for SNS storage ring

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Description

In the Spallation Neutron Source (SNS) storage ring, the machine cycle is dominated by the multiturn injection. Therefore, the beam loading issues are quite different from the conventional beam loading. The evolution of the particle distribution due to beam loading needs attention. If not corrected, the beam loading effect will lead to a bunch to bucket mismatch in the injection, causing bunch leakage into the interbunch gap. The bunch leakage will increase the extraction beam loss, and lower the e-p instability threshold. On the other hand, the control of bunch leakage necessitates the beam loading factor to be small. Therefore, ... continued below

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3 p.

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Weng, W. T. & Zhang, S. Y. August 1998.

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Description

In the Spallation Neutron Source (SNS) storage ring, the machine cycle is dominated by the multiturn injection. Therefore, the beam loading issues are quite different from the conventional beam loading. The evolution of the particle distribution due to beam loading needs attention. If not corrected, the beam loading effect will lead to a bunch to bucket mismatch in the injection, causing bunch leakage into the interbunch gap. The bunch leakage will increase the extraction beam loss, and lower the e-p instability threshold. On the other hand, the control of bunch leakage necessitates the beam loading factor to be small. Therefore, beam stabilities associated with the beam loading automatically satisfied. In this article, the simulation of the SNS beam loading effect (together with the space charge effect) will be presented. Same method has been applied to the PSR, where some beam loading effect is shown.

Physical Description

3 p.

Notes

INIS; OSTI as DE98003744

Source

  • EPAC 1998: 6. European particle accelerator conference, Stockholm (Sweden), 22-26 Jun 1998

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  • Other: DE98003744
  • Report No.: BNL--65644
  • Report No.: CONF-980671--
  • Grant Number: AC02-98CH10886
  • DOI: 10.2172/638220 | External Link
  • Office of Scientific & Technical Information Report Number: 638220
  • Archival Resource Key: ark:/67531/metadc698263

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Creation Date

  • August 1998

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • July 21, 2016, 6:18 p.m.

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Weng, W. T. & Zhang, S. Y. Beam loading issues for SNS storage ring, report, August 1998; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc698263/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.