The beam-stay-clear definition of the PEP-II B Factory

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We describe the definition of the beam-stay-clear (BSC) for the PEP-II project collaboration of SLAC, LBNL, and LLNL. We devote special attention to the region near the collision point where both beams, the low energy beam (LEB) and the high energy beam (HEB) have large beta function values. The BSC of each beam is defined so as to maximize the flexibility of the accelerator design while at the same time satisfying the mechanical constraints imposed by getting the beams separated after collision and by keeping the beams inside the good field region of the final focusing magnets. The beam separation ... continued below

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5 p.

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Sullivan, M.; Ecklund, S.; Seeman, J.; Wienands, U. & Zisman, M. June 1, 1996.

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Description

We describe the definition of the beam-stay-clear (BSC) for the PEP-II project collaboration of SLAC, LBNL, and LLNL. We devote special attention to the region near the collision point where both beams, the low energy beam (LEB) and the high energy beam (HEB) have large beta function values. The BSC of each beam is defined so as to maximize the flexibility of the accelerator design while at the same time satisfying the mechanical constraints imposed by getting the beams separated after collision and by keeping the beams inside the good field region of the final focusing magnets. The beam separation scheme, which plays an important role in the BSC definition, is also described. The flexibility of the design is explored by studying various parameter values for luminosity, tune shift, {beta}{sub y}{sup *} and vertical-to-horizontal beam aspect ratio and verifying that the beam envelopes generated by these changes remain inside the defined BSC.

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5 p.

Notes

OSTI as DE97009060

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

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  • Other: DE97009060
  • Report No.: SLAC-PUB--7207
  • Report No.: LBNL--39054;CONF-960621--
  • Grant Number: AC03-76SF00515
  • Office of Scientific & Technical Information Report Number: 621770
  • Archival Resource Key: ark:/67531/metadc690443

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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, 12:29 p.m.

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Sullivan, M.; Ecklund, S.; Seeman, J.; Wienands, U. & Zisman, M. The beam-stay-clear definition of the PEP-II B Factory, article, June 1, 1996; California. (digital.library.unt.edu/ark:/67531/metadc690443/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.