Cianchi, A. Alesini, D. Anania, M.P. Bellaveglia, M. Bisesto, F.G. Castellano, M. Chiadroni, E. Costa, G. Ferrario, M. Filippi, F. Giribono, A. Marocchino, A. Mostacci, A. Pompili, R. Shpakov, V. Vaccarezza, C. Villa, F. JACoW Publishing Geneva, Switzerland 2226-0366 978-3-95450-194-6 10.18429/JACoW-LINAC2018-FR1A03 English 977-981 FR1A03 plasma diagnostics radiation emittance laser Contribution to a conference proceedings 2019 2019-01 https://doi.org/10.18429/JACoW-LINAC2018-FR1A03 http://jacow.org/linac2018/papers/fr1a03.pdf Advanced diagnostics tools are crucial in the development of plasma-based accelerators. Accurate measurements of the beam quality at the exit of the plasma channel are mandatory for the optimization of the plasma accelerator. 6D electron beam diagnostics will be reviewed with emphasis on emittance measurement, which is particularly complex due to the peculiarity of the emerging beams.