|THPGW067||Progress Towards a Single-Shot Emittance Measurement Technique at AWAKE||3742|
|SUSPFO113||use link to see paper's listing under its alternate paper code|
Externally injected electrons are captured and accelerated in the plasma wake of a self-modulated proton beam at the Advanced Wakefield Experiment (AWAKE) at CERN. The energy distribution of the accelerated electron beam is measured using a dipole spectrometer in combination with a scintillator screen, with two upstream quadrupoles providing energy-dependent focusing. Measuring the vertical beam size variation with horizontal position along the scintillator screen, and therefore energy, results in an effective quadrupole scan permitting single shot vertical geometric emittance measurements. Limitations of the method due to effects such as imperfect beam focusing and finite resolution are explored via simulations using the beam tracking code BDSIM.
|DOI •||reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-THPGW067|
|About •||paper received ※ 15 May 2019 paper accepted ※ 22 May 2019 issue date ※ 21 June 2019|
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