Proposal for an aluminum beam screen in the LHC

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This paper proposes a cold beam screen made of high strength, high electrical resistivity aluminum alloy (such as A7NOl) as an alternative to the present LHC design that is based on a copper co- laminated high Mn content stainless steel. The main advantages of an aluminum screen are: simple manufacturing processes, low cost, elimination of millions of small slots and of TEM waves, no adhesion problem, no helium leak problem (vacuum tight), non-magnetic, and others. The available aperture is equivalent to the present design when a non-uniform wall thickness is adopted. A prototype was built to demonstrate the design and ... continued below

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5 p.

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Ishimaru, H. June 1, 1997.

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Description

This paper proposes a cold beam screen made of high strength, high electrical resistivity aluminum alloy (such as A7NOl) as an alternative to the present LHC design that is based on a copper co- laminated high Mn content stainless steel. The main advantages of an aluminum screen are: simple manufacturing processes, low cost, elimination of millions of small slots and of TEM waves, no adhesion problem, no helium leak problem (vacuum tight), non-magnetic, and others. The available aperture is equivalent to the present design when a non-uniform wall thickness is adopted. A prototype was built to demonstrate the design and the end connections. Concerns about the multi-pactoring, electron cloud instability, surface resistance and cryopumping using anodized aluminum will be addressed.

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5 p.

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OSTI as DE97053507

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  • 17. IEEE particle accelerator conference, Vancouver (Canada), 12-16 May 1997

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  • Other: DE97053507
  • Report No.: FNAL/C--97/198
  • Report No.: CONF-970503--319
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 524940
  • Archival Resource Key: ark:/67531/metadc696870

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  • June 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • April 1, 2016, 6:35 p.m.

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Ishimaru, H. Proposal for an aluminum beam screen in the LHC, article, June 1, 1997; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc696870/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.