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arXiv · 1410.5964

Simulation of beam-beam induced emittance growth in the HL-LHC with crab cavities

S. Paret·J. Qiang
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Abstract

The emittance growth in the HL-LHC due to beam-beam effects is examined by virtue of strong-strong computer simulations. A model of the transverse damper and the noise level have been tuned to simulate the emittance growth in the present LHC. Simulations with projected HL-LHC beam parameters and crab cavities are discussed. It is shown that with the nominal working point, the large beam-beam tune shift moves the beam into a resonance that causes substantial emittance growth. Increasing the working point slightly is demonstrated to be very beneficial.

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S. Paret, J. Qiang. 2014-10-22. Simulation of beam-beam induced emittance growth in the HL-LHC with crab cavities. https://doi.org/10.5170/cern-2014-004.237

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