Plasma lens and wake experiments in Japan

Plasma lens and wake experiments performed and planned in Japan are reviewed. Overdense plasma lens experiments were conducted at the University of Tokyo on a 18 MeV linac. The change in energy distribution of linac beams caused by the plasma wakefield was measured at KEK on a 500 MeV linac. Laser wakefield acceleration experiments are planned at Osaka University using a 30TW Nd:glass laser