Debris and shrapnel assessments for National Ignition Facility targets and diagnostics

9th International Conference on Inertial Fusion Sciences and Applications

Masters, N.D.^1 ; Fisher, A.^1 ; Kalantar, D.^1 ; Stölken, J.^1 ; Smith, C.^1 ; Vignes, R.^1 ; Burns, S.^1 ; Doeppner, T.^1 ; Kritcher, A.^1 ; Park, H.-S.^1

Lawrence Livermore National Laboratory, Livermore

CA

94550, United States^1

关键词: Crystal spectrometer;    Diagnostic filters;    Filter configuration;    Material strength;    National ignition facility;    Potential threats;    Shielding design;    Target component;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/717/1/012108/pdf
DOI  :  10.1088/1742-6596/717/1/012108

来源: IOP

【 摘 要 】

High-energy laser experiments at the National Ignition Facility (NIF) can create debris and shrapnel capable of damaging laser optics and diagnostic instruments. The size, composition and location of target components and sacrificial shielding (e.g., disposable debris shields, or diagnostic filters) and the protection they provide is constrained by many factors, including: chamber and diagnostic geometries, experimental goals and material considerations. An assessment of the generation, nature and velocity of shrapnel and debris and their potential threats is necessary prior to fielding targets or diagnostics. These assessments may influence target and shielding design, filter configurations and diagnostic selection. This paper will outline the approach used to manage the debris and shrapnel risk associated with NIF targets and diagnostics and present some aspects of two such cases: the Material Strength Rayleigh- Taylor campaign and the Mono Angle Crystal Spectrometer (MACS).