SIRIUS-M, a uniform, illumination, direct drive, short wavelength laser fusion materials test facility

The design for a nontritium breeding nonpower producing short wavelength laser fusion materials test facility utilizing direct drive targets and uniform illumination is presented. A target yield of ≅ 15 MJ and a repetition rate of 10 Hz provides a fusion power of 150 MW. The 4 meter diameter spherical target chamber allows 46 m/sup 2/ of wall surface to experience 1 MW/m/sup 2/ wall loading over 1 year of operation at 5% duty factor. The wall is protected from the target x-rays and ion debris by 1 torr of xenon gas. Radiation hydrodynamics calculations and transient heat conduction calculations of the wall response show that the design goal of less than 1 mm/year of erosion from the graphite first wall is easily achieved. Design of the materials test modules to maximize damage is presented. This design involves embedding the test module in a Pb reflector behind the first wall. Such a facility could be used to test ICF reactor materials using a relatively small extrapolation of technology beyond the short wavelength laser based single pulse target development facility used to test high yield targets