Beam screen issues

  title={Beam screen issues},
  author={Elias M'etral},
  journal={arXiv: Accelerator Physics},
  • E. M'etral
  • Published 8 August 2011
  • Physics
  • arXiv: Accelerator Physics
In the High Energy LHC (HE-LHC), a beam energy of about 16.5 TeV is currently contemplated. The beam screen issues linked to the use of 20 T dipole magnets instead of 8.33 T are discussed, with a particular emphasis on two mechanisms, the magneto-resistance and the anomalous skin effect, assuming the nominal machine and beam parameters. The magneto-resistance effect always leads to an increase of the material resistivity (as the mean free path in the presence of a transverse magnetic field… 

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SummaryA simple method is described for obtaining series expansions for the integrals which represent the surface impedance in the theory of the anomalous skin effect in metals. The results agree