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WEP2PO006 |
Overview of the CERN PSB-to-PS Transfer Line Optics Matching Studies in View of the LHC Injectors Upgrade Project |
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- V. Forte, S.C.P. Albright, W. Bartmann, G.P. Di Giovanni, M.A. Fraser, C. Heßler, A. Huschauer, A. Oeftiger
CERN, Geneva, Switzerland
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At injection into the CERN Proton Synchrotron (PS) a significant horizontal emittance blow-up of the present high brightness beams for the LHC is observed. A partial contribution to this effect is suspected to be an important mismatch between the dispersion function in the transfer line from the PS Booster (PSB) and the ring itself. This mismatch will be unacceptable in view of the beam parameters requested by the LHC Injectors Upgrade (LIU) project with high longitudinal emittance and momentum spread. To deliver the requested beam parameters the PSB-to-PS transfer line will be upgraded and the optics in the line changed to improve the matching from all the four PSB rings. A re-matching campaign from the PSB ring 3 has been carried out to evaluate the impact of the present optics mismatch as a source of emittance growth both in simulations and measurements.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-HB2018-WEP2PO006
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WEP2PO007 |
Multi-Particle Simulations of the Future CERN PSB Injection Process with Updated Linac4 Beam Performance |
278 |
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- V. Forte, C. Bracco, G.P. Di Giovanni, M.A. Fraser, A.M. Lombardi, B. Mikulec
CERN, Geneva, Switzerland
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In the framework of the LHC Injectors Upgrade (LIU) project, the injection process in the CERN Proton Synchrotron Booster (PSB) will be renovated after the connection with the Linac4. A new H− charge exchange injection system using a stripping foil is foreseen to increase the brightness of the stored beams and to provide high flexibility in terms of emittance tailoring at 160 MeV. Realistic multi-particle simulations of the future injection processes for high brightness beams (i.e. for the LHC) and high intensity beams (i.e. for the ISOLDE experiment) are presented in this paper. The simulations are based on the present performance of Linac4 and include scattering induced by the foil, space charge effects and compensation of the lattice perturbation introduced by the bumpers of the injection chicane.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-HB2018-WEP2PO007
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Export • |
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※ Text/Word,
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