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Kuznetsov, G.F.

Paper Title Page
WE6PFP028 Recent Experience with Electron Lens Beam-Beam Compensation at the Tevatron 2552
 
  • V. Kamerdzhiev, G.F. Kuznetsov, G.W. Saewert, V.D. Shiltsev, A. Valishev
    Fermilab, Batavia
  
 

Tevatron Electron Lenses (TEL) have reliably demonstrated correction of the bunch-to-bunch tune shift induced by long-range beam-beam interactions. The second and most important intended application of TEL is compensation of the nonlinearity of head-on beam-beam force. We report on the first studies of head-on beam-beam compensation with the second generation Gaussian profile TEL. We evaluate the effect of TEL on beam life time and emittance and compare the observed results with simulations.

  
TH5PFP020 Beam Studies with Electron Columns 3233
 
  • V.D. Shiltsev, G.F. Kuznetsov, A. Valishev
    Fermilab, Batavia
  • V. Kamerdzhiev
    FZJ, Jülich
  • A.L. Romanov
    BINP SB RAS, Novosibirsk
  
 

We report preliminary results of experimental studies of "electron columns" in the Tevatron and in a specialized test setup. In the Tebvatron, 150 GeV beam of protons ionized residual gas and ionization electrons are stored in an electrostatic trap immersed into strong longitudinal magnetic field. Shifts of proton betatron frequencies are reported. In the test set, we observe effects pointing to accumulation and escape of ionization electrons.