Ion trapping in Recycler Ring

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Transverse instabilities have been observed in the antiproton beam stored in the Fermilab Recycler Ring, resulting in a sudden increase in the transverse emittances and a small beam loss. The instabilities appear to occur a few hours after a change in the ramping pattern of the Main Injector which shares the same tunnel. The phenomena have been studied by inducing similar instabilities. However, the mechanism is still unknown. A possible explanation is that the ions trapped in the beam reach such an intensity that collective coupled transverse oscillation occurs. However, there is no direct evidence of the trapped ions at ... continued below

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295 Kilobytes pages

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Ng, K.Y. June 28, 2004.

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Description

Transverse instabilities have been observed in the antiproton beam stored in the Fermilab Recycler Ring, resulting in a sudden increase in the transverse emittances and a small beam loss. The instabilities appear to occur a few hours after a change in the ramping pattern of the Main Injector which shares the same tunnel. The phenomena have been studied by inducing similar instabilities. However, the mechanism is still unknown. A possible explanation is that the ions trapped in the beam reach such an intensity that collective coupled transverse oscillation occurs. However, there is no direct evidence of the trapped ions at this moment.

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295 Kilobytes pages

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  • 31st ICFA Advanced Beam Dynamics Workshop on Electron-Cloud Effects ''ECLOUD'04'', Napa, CA (US), 04/19/2004--04/23/2004

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  • Report No.: FERMILAB-Conf-04/069-AD
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 825349
  • Archival Resource Key: ark:/67531/metadc779541

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  • June 28, 2004

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  • Dec. 3, 2015, 9:30 a.m.

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  • Aug. 4, 2016, 7:48 p.m.

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Ng, K.Y. Ion trapping in Recycler Ring, article, June 28, 2004; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc779541/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.