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RF multipoles deliverable
The crab cavities to be installed in the High-Luminosity LHC (HL-LHC) aim to provide an increase in luminosity by restoring head-on collisions and therefore reducing the loss of luminosity due to the crossing angle. The crab cavities rotate the beam by providing z-dependent kicks near the interactio...
Autores principales: | , , |
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Lenguaje: | eng |
Publicado: |
2020
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Materias: | |
Acceso en línea: | http://cds.cern.ch/record/2718290 |
Sumario: | The crab cavities to be installed in the High-Luminosity LHC (HL-LHC) aim to provide an increase in luminosity by restoring head-on collisions and therefore reducing the loss of luminosity due to the crossing angle. The crab cavities rotate the beam by providing z-dependent kicks near the interaction point. Two designs have been cast for this task: the RF dipole (RFD) and the Double Quarter Wave (DQW); a prototype of the latter one has been installed in the SPS and in 2018 the first successful crabbing of proton beams was achieved. As the design of both these crab cavities has to be very compact to be able to fit between the two beams, this causes a loss of axial symmetry that gives rise to high order multipoles. This study aims to explore the impact and tolerances of the high order multipoles on beam dynamics by performing DA studies on the HL-LHC lattice. |
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