Ultrahigh brightness bunches from hybrid plasma accelerators as drivers of 5th generation light sources

B Hidding, G G Manahan, O Karger, A Knetsch, G Wittig, D A Jaroszynski, Z-M Sheng, Y Xi, A Deng, J B Rosenzweig, G Andonian, A Murokh, G Pretzler, D L Bruhwiler, J Smith