Interaction region vacuum system design at the PEP-II B factory

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The Interaction Region Vacuum System in the PEP-II B-Factory at SLAC must produce average pressures in the 10{sup -10} Torr range. low beamline pressures will minimize the background radiation encountered by the BaBar Detector A combination of copper and stainless steel vacuum chambers with continuous antechambers are used to make up the beam tubes. Linear Non-Evaporable Getter (NEG) pumps are used to produce distributed pumping along the length of these beam tubes. High conductance microwave type screens provide RF shields between the beam aperture and the NEG pumps. In this paper the design features of the beam tubes, NEG pumps, ... continued below

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6 pages; Other: FDE: PDF

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Bertolini, L., LLNL July 21, 1997.

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The Interaction Region Vacuum System in the PEP-II B-Factory at SLAC must produce average pressures in the 10{sup -10} Torr range. low beamline pressures will minimize the background radiation encountered by the BaBar Detector A combination of copper and stainless steel vacuum chambers with continuous antechambers are used to make up the beam tubes. Linear Non-Evaporable Getter (NEG) pumps are used to produce distributed pumping along the length of these beam tubes. High conductance microwave type screens provide RF shields between the beam aperture and the NEG pumps. In this paper the design features of the beam tubes, NEG pumps, and RF pump screens are described and the vacuum and impedance analyses conducted in support of the design are discussed.

Physical Description

6 pages; Other: FDE: PDF

Notes

OSTI as DE00016393

Source

  • 1997 Particle Accelerator Conference, Vancouver, BC (CA), 05/12/1997--05/16/1997; Other Information: Supercedes report DE98051012; PBD: 21 Jul 97

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  • Other: DE98051012
  • Report No.: UCRL-JC-128067
  • Report No.: CONF-970503*--
  • Grant Number: W-7405-Eng-48
  • Office of Scientific & Technical Information Report Number: 16393
  • Archival Resource Key: ark:/67531/metadc622141

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • July 21, 1997

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • Jan. 3, 2017, 12:48 p.m.

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Bertolini, L., LLNL. Interaction region vacuum system design at the PEP-II B factory, article, July 21, 1997; (digital.library.unt.edu/ark:/67531/metadc622141/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.