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TY - CONF AU - Turner, M. AU - Clerc, V. AU - Gorgisyan, I. AU - Gschwendtner, E. AU - Mazzoni, S. AU - Petrenko, A.V. ED - Schaa, Volker RW ED - Arduini, Gianluigi ED - Pranke, Juliana ED - Seidel, Mike ED - Lindroos, Mats TI - Upgrade of the Two-Screen Measurement Setup in the AWAKE Experiment J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017 C1 - Copenhagen, Denmark T2 - International Particle Accelerator Conference T3 - 8 LA - english AB - The AWAKE project at CERN uses a self-modulated §I{400}{GeV/c} proton bunch to drive GV/m wakefields in a §I10{m} long plasma with an electron density of n_{pe} = 7 × 10¹⁴ \rm{electrons/cm}³. We present the upgrade of a proton beam diagnostic to indirectly prove that the bunch self-modulated by imaging defocused protons with two screens downstream the end of the plasma. The two-screen diagnostic has been installed, commissioned and tested in autumn 2016 and limitations were identified. We plan to install an upgraded diagnostics to overcome these limitations. PB - JACoW CP - Geneva, Switzerland SP - 1682 EP - 1684 KW - proton KW - plasma KW - wakefield KW - electron KW - experiment DA - 2017/05 PY - 2017 SN - 978-3-95450-182-3 DO - 10.18429/JACoW-IPAC2017-TUPIK001 UR - http://jacow.org/ipac2017/papers/tupik001.pdf ER -