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Title: Measurement and effects of the magnetic hysteresis on the LHC crossing angle and separation bumps
Authors: Sammut, Nicholas
White, Sebastian M.
Burkhardt, H.
Giloux, Christian
Venturini Delsolaro, Walter
Keywords: Large Hadron Collider (France and Switzerland)
Magnetic fields
Issue Date: 2008
Publisher: INSPIRE
Citation: Sammut, N., White, S. M., Burkhardt, H., Giloux, C., & Venturini Delsolaro, W. (2008). Measurement and effects of the magnetic hysteresis on the LHC crossing angle and separation bumps. 11th European Particle Accelerator Conference, Genoa.
Abstract: The superconducting orbit corrector magnets (MCBC, MCBY and MCBX) in the Large Hadron Collider (LHC) at CERN will be used to generate parallel separation and crossing angles at the interaction points during the different phases that will bring the LHC beams into collision. However, the field errors generated by the inherent hysteresis in the operation region of the orbit correctors may lead to unwanted orbit perturbations that could have a critical effect on luminosity. This paper presents the results obtained from dedicated cryogenic measurements on the orbit correctors and the resulting simulations performed to quantify the impact of the hysteresis on the LHC orbit.
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