@misc{oai:repo.qst.go.jp:00077004, author = {Kando, Masaki and Kando, Masaki}, month = {Oct}, note = {In recent LWFA experiments, a moderate intensity around ~10^19 W/cm^2 with a large f-number (>F/20) is used to have quasi-mono-energetic electron beams. This regime is called a weakly nonlinear regime or quasi-linear regime. In contrast, we have conducted several experiment campaigns from 2017 to 2018 using a relatively high-intensity (~10^19 W/cm^2) regime of LWFA using J-KAREN-P laser at KPSI, QST, Japan. In the presentation, we show our recent results on LWFA as well as some consideration on the acceleration and injection mechanisms. Although the required electron beam parameters differ from applications, our finding would be beneficial to the planned work at E7 Area in the ELI NP., 1st ELI-NP User Workshop}, title = {1st ELI-NP User Workshopでの招待講演}, year = {2019} }