Fermilab Accumulator Magnets Vacuum Chamber Heating System J. Satti &

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The Fermi National Accelerator Laboratory (Fermilab) is building an accumulator ring to store antiprotons for high energy physics proton-antiproton collisions in the Tevatron accelerator. The accumulator ring, approximately 474 m in circumference, consists of many quadrupole and dipole magnets connected with stainless steel vacuum chambers for beam circulation. The vacuum pressure required is in the low 10{sup -10} Torr range. To reach this pressure, the vacuum chambers are baked at 300 C each time they have been opened to atmospheric pressure. The critical problem is to bake the chambers in the magnets at high temperature without overheating the laminated magnets. ... continued below

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Lee, G. May 20, 1985.

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Description

The Fermi National Accelerator Laboratory (Fermilab) is building an accumulator ring to store antiprotons for high energy physics proton-antiproton collisions in the Tevatron accelerator. The accumulator ring, approximately 474 m in circumference, consists of many quadrupole and dipole magnets connected with stainless steel vacuum chambers for beam circulation. The vacuum pressure required is in the low 10{sup -10} Torr range. To reach this pressure, the vacuum chambers are baked at 300 C each time they have been opened to atmospheric pressure. The critical problem is to bake the chambers in the magnets at high temperature without overheating the laminated magnets. Some of the magnets are 5 m long with very restrictive space for the heaters and insulation. An average space of only 7.5 mm around the chambers is available. In this space a heating system has been designed and tested to heat the chamber to 300 C and allow a maximum temperature of 65 C next to the magnet components. This was accomplished by using a heating blanket completely covered with water cooled copper heat sink jacket to protect the magnet from the high temperatures. The design of a final selected heating blanket is discussed. A prototype test results are given with comparison of calculated and measured temperature distribution.

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  • Report No.: FERMILAB-PBAR-NOTE-423
  • Grant Number: AC02-07CH11359
  • DOI: 10.2172/948917 | External Link
  • Office of Scientific & Technical Information Report Number: 948917
  • Archival Resource Key: ark:/67531/metadc928374

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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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  • May 20, 1985

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Nov. 28, 2016, 3:24 p.m.

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Lee, G. Fermilab Accumulator Magnets Vacuum Chamber Heating System J. Satti &, report, May 20, 1985; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc928374/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.