New physics and improvements in beam-beam tail simulations

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Our beam-beam simulation code has been improved and used to study lifetime phenomena under beam-beam interaction. One phenomenon observed is high order horizontal resonances (e. g., 8th to 16th), which are found to be exceptionally strong in the horizontal tail and have significant impact on lifetime. A first order perturbation calculation gives good agreement with the simulation on resonance width and tune. Gas scattering is a new feature has been added to the program. The lifetime result is compared with analytical calculation and agrees well. The other effect studied is parasitic crossings in PEP-II. The simulation demonstrates a dramatic tail ... continued below

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5 p.

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Chen, T.; Irwin, J. & Siemann, R.H. June 1, 1996.

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Description

Our beam-beam simulation code has been improved and used to study lifetime phenomena under beam-beam interaction. One phenomenon observed is high order horizontal resonances (e. g., 8th to 16th), which are found to be exceptionally strong in the horizontal tail and have significant impact on lifetime. A first order perturbation calculation gives good agreement with the simulation on resonance width and tune. Gas scattering is a new feature has been added to the program. The lifetime result is compared with analytical calculation and agrees well. The other effect studied is parasitic crossings in PEP-II. The simulation demonstrates a dramatic tail blow-up when the horizontal separation is reduced to about 7 sigma.

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5 p.

Notes

OSTI as DE97009065

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  • EPAC `96: 5. European particle accelerator conference, Barcelona (Spain), 10-14 Jun 1996

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  • Other: DE97009065
  • Report No.: SLAC-PUB--7193
  • Report No.: CONF-960621--
  • Grant Number: AC03-76SF00515
  • Office of Scientific & Technical Information Report Number: 621805
  • Archival Resource Key: ark:/67531/metadc694581

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  • June 1, 1996

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  • Aug. 14, 2015, 8:43 a.m.

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  • Aug. 9, 2016, 12:30 p.m.

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Chen, T.; Irwin, J. & Siemann, R.H. New physics and improvements in beam-beam tail simulations, article, June 1, 1996; California. (digital.library.unt.edu/ark:/67531/metadc694581/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.