Fermilab Accumulator Ring Ultra-High Vacuum System

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Description

An average pressure of 3 x 10{sup -10} Torr is required in order to store a beam of antiprotons (for up to 20 hours) in the Fermilab Accumulator Ring. The Accumulator Ring has a circumference of 474 m and consists of 114 main magnets which surround a continuous, stainless-steel vacuum chamber with a mean diameter of 12 cm. The Accumulator Ring is located in a below-grade tunnel which is inaccessible during normal operation. Consequently, all monitoring and control operations must be done remotely. In this paper the authors describe: (1) the rationale of the Accumulator Ring's vacuum system; (2) the ... continued below

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17 pages

Creation Information

Mills, F.E.; Bartelson, C.; Gormley, M.; Klen, J.; Lee, G.N.; Marriner, J. et al. January 1, 1985.

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Description

An average pressure of 3 x 10{sup -10} Torr is required in order to store a beam of antiprotons (for up to 20 hours) in the Fermilab Accumulator Ring. The Accumulator Ring has a circumference of 474 m and consists of 114 main magnets which surround a continuous, stainless-steel vacuum chamber with a mean diameter of 12 cm. The Accumulator Ring is located in a below-grade tunnel which is inaccessible during normal operation. Consequently, all monitoring and control operations must be done remotely. In this paper the authors describe: (1) the rationale of the Accumulator Ring's vacuum system; (2) the specific choice of pumping systems (roughing, ion and sublimation) that was selected for implementation; (3) the details of the instrumentation, control and backeout systems (300 C) for monitoring the pressure and desorbing the vacuum chamber; and (4) the operating experience and performance of the entire system.

Physical Description

17 pages

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Identifier

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  • Report No.: FERMILAB-PBAR-NOTE-440
  • Grant Number: AC02-07CH11359
  • DOI: 10.2172/984626 | External Link
  • Office of Scientific & Technical Information Report Number: 984626
  • Archival Resource Key: ark:/67531/metadc1014015

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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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Creation Date

  • January 1, 1985

Added to The UNT Digital Library

  • Oct. 14, 2017, 8:36 a.m.

Description Last Updated

  • Oct. 19, 2017, 8:10 p.m.

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Mills, F.E.; Bartelson, C.; Gormley, M.; Klen, J.; Lee, G.N.; Marriner, J. et al. Fermilab Accumulator Ring Ultra-High Vacuum System, report, January 1, 1985; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc1014015/: accessed April 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.