Upgrade of the two-screen measurement setup in the AWAKE experiment

8th International Particle Accelerator Conference

Turner, Marlene^1,2 ; Clerc, Vincent^1 ; Gorgisyan, Ishkhan^1 ; Gschwendtner, Edda^1 ; Mazzoni, Stefano^1 ; Petrenko, Alexey^1

CERN, Geneva, Switzerland^1

Technical University of Graz, Graz, Austria^2

关键词: Beam diagnostics;    Measurement setup;    Wakefields;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/874/1/012031/pdf
DOI  :  10.1088/1742-6596/874/1/012031

来源: IOP

【 摘 要 】

The AWAKE project at CERN uses a self-modulated 400 GeV/c proton bunch to drive GV/m wakefields in a 10 m long plasma with an electron density of npe= 7 × 1014electrons/cm3. 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.