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T: Fachverband Teilchenphysik

T 86: Beschleunigerphysik 8

T 86.1: Talk

Thursday, March 1, 2012, 16:45–17:00, VG 1.104

CERN Linac4 - The Space Charge Challenge — •Lutz Matthias Hein — CERN, Genf, Schweiz

The achievement of a higher proton flux to go beyond the current LHC design luminosity parameters is conditional on an upgrade of the injector chain. Presently the major limitation is given by space charge effects at injection from Linac2 into the PS Booster. These will be overcome by increasing the injection energy from 50 MeV to 160 MeV with the planned replacement of Linac2 with Linac4, a new normal conducting H- linear accelerator presently under construction. Due to the high charge density of the Linac4 bunches space charge will still dominate the beam dynamics in the low energy 3 MeV frontend. In this presentation a short, theoretical introduction to space charge effects will be given and their impact on the beam will be illustrated with simulations. Moreover, the latest results of the commissioning of the low energy front end of Linac4 will be shown and discussed.