A feedback for longitudinal instabilities in the SLC damping rings

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Longitudinal coupled bunch instabilities which are being observed in the SLC Damping Rings present a serious limitation to the ultimate luminosity of the colliding beams. It has been observed at intensities above 1 {times} 10{sup 10} particles per bunch with growth rates of the order of 10{sup 4} per second. At lower intensities we were able to control the growth by detuning the RF cavity through temperature or voltage changes. As the SLC operating intensity approaches the design value above 5 {times} 10{sup 10}, a more fundamental cure is definitely needed. In this report we sum up the studies done ... continued below

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Pages: (3 p)

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Chao, Y.; Corredoura, P.; Limberg, T.; Schwarz, H. & Wilson, P. January 1, 1991.

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Longitudinal coupled bunch instabilities which are being observed in the SLC Damping Rings present a serious limitation to the ultimate luminosity of the colliding beams. It has been observed at intensities above 1 {times} 10{sup 10} particles per bunch with growth rates of the order of 10{sup 4} per second. At lower intensities we were able to control the growth by detuning the RF cavity through temperature or voltage changes. As the SLC operating intensity approaches the design value above 5 {times} 10{sup 10}, a more fundamental cure is definitely needed. In this report we sum up the studies done so far in characterizing and simulating this instability and the proposed remedies. 1 ref., 7 figs., 5 tabs.

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Pages: (3 p)

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OSTI; NTIS; INIS; GPO Dep.

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  • 1991 Institute of Electrical and Electronics Engineers (IEEE) particle accelerator conference (PAC), San Francisco, CA (United States), 6-9 May 1991

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  • Other: DE91018414
  • Report No.: SLAC-PUB-5589
  • Report No.: CONF-910505--404
  • Grant Number: AC03-76SF00515
  • Office of Scientific & Technical Information Report Number: 5415187
  • Archival Resource Key: ark:/67531/metadc1065518

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1991

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  • Feb. 4, 2018, 10:51 a.m.

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  • March 6, 2018, 7:33 p.m.

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Chao, Y.; Corredoura, P.; Limberg, T.; Schwarz, H. & Wilson, P. A feedback for longitudinal instabilities in the SLC damping rings, article, January 1, 1991; United States. (digital.library.unt.edu/ark:/67531/metadc1065518/: accessed April 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.