TY - CPAPER AU - Feng, C. AU - Deng, H.X. AU - Xiang, D. AU - Zhao, Z.T. TI - Generating Intense Fully Coherent Soft X-Ray Radiation Based on a Laser-Plasma Accelerator J2 - Proc. of FEL2015 AB - Laser-plasma based accelerator has the potential to dramatically reduce the size and cost of future x-ray light sources to the university-laboratory scale. However, the large energy spread of the laser-plasma accelerated electron beam may hinder the way for short wavelength free-electron laser generation. In this paper, we propose a novel method for directly imprinting strong coherent micro-bunching on the electron beam with large intrinsic energy spread by using a wavefront-tilted conventional optical laser beam and a weak dipole magnet. Theoretical analysis and numerical simulations demonstrate that this technique can be used for the generation of fully coherent femtosecond soft x-ray radiation at gigawatts level with a very short undulator. PB - JACoW CY - Geneva, Switzerland ER -