Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8166057 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2018 | 7 Pages |
Abstract
The crab cavities are a critical component in the high luminosity LHC upgrade project to compensate the luminosity loss from large crossing angle collision. However, these crab cavities will not be perfect in the real accelerator. In this paper, we studied the effects of crab cavity imperfections on colliding beam luminosity lifetime degradation for the LHC upgrade through detailed numerical simulations. Our simulation results suggest that the white noise jitter in the crab cavity RF phase and voltage rms amplitudes should be kept below a few 10â5 for a good luminosity lifetime, while with frequency-dependent jitter, the amplitudes should be kept below a few 10â4 for a good lifetime. The RF multipole errors in the current crab cavity designs are small enough and would not cause extra luminosity degradation.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
J. Qiang, S. Paret, A. Ratti, J. Barranco, T. Pieloni, G. Arduini, X. Buffat, Y. Papaphilippou,