Research on Laser Acceleration and Coherent X-Ray Generation Using J-KAREN-P Laser

摘要

We present the progress on the upgrade status of the J-KAREN-P, which is a Ti: Sapphire laser aiming at the intensity of 10~(22) W/cm~2 at the repetition rate of 0.1 Hz. The upgrade includes two pilot experiments in order to show the laser performance on target. The first experiment is to generate high-energy ions from thin-foil target. The second experiment is the high-order harmonic at a relativistic intensity. Currently, laser acceleration of protons is being tested and we have obtained 32 MeV protons from a 5-μm stainless steel target irradiated by a 14-J, 30-fs laser pulse. In addition, a joint program toward compact X-ray free-electron laser based on laser electron acceleration is presented briefly and the corresponding J-KAREN-P work is presented.