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@unpublished{schroeder:ipac2021-tuxb02,
author = {S. Schröder and S. Bohlen and L.A. Boulton and J. Chappell and R.T.P. D’Arcy and S. Diederichs and J.M. Garland and P. Gonzalez-Caminal and A. Knetsch and C.A. Lindstrøm and G. Loisch and A. Martinez de la Ossa and J. Osterhoff and K. Poder and L. Schaper and B. Schmidt and B. Sheeran and G.E. Tauscher and S. Wesch and J.C. Wood and J. Zemella},
% author = {S. Schröder and S. Bohlen and L.A. Boulton and J. Chappell and R.T.P. D’Arcy and S. Diederichs and others},
% author = {S. Schröder and others},
title = {{Precision Control of Plasma Wakefields for Highly Efficient and Energy-Spread-Preserving Electron Acceleration}},
booktitle = {Proc. IPAC'21},
language = {english},
intype = {presented at the},
series = {International Particle Accelerator Conference},
number = {12},
venue = {Campinas, SP, Brazil},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2021},
note = {presented at IPAC'21 in Campinas, SP, Brazil, unpublished},
abstract = {{Plasma-wakefield accelerators driven by intense particle beams promise to significantly reduce the size of future high-energy facilities. These applications require an energy-efficient acceleration process with a well-controlled energy spectrum, both of which can be achieved simultaneously by tailoring the plasma wakefield. A prerequisite for such control of the wakefield is its precise measurement. Here we discuss a new measurement technique that enables femtosecond-level sampling of the longitudinal electric fields and that is particularly powerful due to its operational simplicity*. Using this method, we experimentally demonstrated optimal beam loading in a nonlinear electron-driven plasma accelerator by wakefield flattening at the few-percent level**. Bunches were accelerated at a gradient of 1.3 GV/m and with an energy-transfer efficiency of (42±4)% while preserving per-mille energy spreads with full charge coupling. These results open the door to the high-quality operation of future plasma accelerators through precise control of the acceleration process.}},
}