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Vorobiev, L.G.

Paper Title Page
TU6PFP059 Numerical Studies of High-Intensity Injection Painting for Project X 1418
 
  • A.I. Drozhdin, D.E. Johnson, L.G. Vorobiev
    Fermilab, Batavia
  
 

Injection painting enables the mitigation of space charge and stability issues, and may be indispensable for the Project-X at Fermilab, delivering high-intensity proton beams to HEP experiments. Numerical simulations of multi-turn phase space painting have been performed for the FNAL Recycler Ring, including a self-consistent space charge model, lattice nonlinearities, H- stripping, particle loss and foil heating. Different painting waveforms were studied to build a uniform (KV-like distribution) and other phase space distributions.

  
WE6PFP035 Suppression of Beam-Beam Tune Spread Using Hollow Electron Beam 2570
 
  • A. Valishev, L.G. Vorobiev
    Fermilab, Batavia
  
 

Funding: Work supported by the United States Department of Energy under Contract No. DE-AC02-07CH11359


Significant difference in transverse size of the proton and antiproton bunches at collision points is known to cause deterioration of the larger (proton) beam life time at Tevatron. The reason is believed to be in the combination of large betatron tune spread induced by the high nonlinearity of the beam-beam force, and limited tune space. We consider the prospects for application of hollow electron beam for beam-beam tune spread suppression.