26 September 2013 M-ARIANE (Mirror-assisted Active Readout In A Neutron Environment): an x-ray imaging system for implosion experiments on the National Ignition Facility at ignition neutron yields
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Abstract
X-ray imaging diagnostics instruments will operate in a harsh ionizing radiation background environment during ignition experiments at the National Ignition Facility (NIF). This background consists of mostly neutrons and gamma rays produced by inelastic scattering of neutrons. An imaging system, M-ARIANE (Mirror-assisted Active Readout In A Neutron Environment), based on an x-ray framing camera with film, has been designed to operate in such a harsh neutron-induced background environment. Multilayer x-ray mirrors and a shielding enclosure are the key components of this imaging system which is designed to operate at ignition neutron yields of ~1e18 on NIF. Modeling of the neutronand gamma-induced backgrounds along with the signal and noise of the x-ray imaging system is presented that display the effectiveness of this design.
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V. A. Smalyuk, J. Ayers, P. M. Bell, L. R. Benedetti, D. K. Bradley, C. Cerjan, J. Emig, B. Felker, S. M. Glenn, C. Hagmann, J. Holder, N. Izumi, J. D. Kilkenny, J. A. Koch, O. L. Landen, J. Moody, K. Piston, N. Simanovskaia, C. Walton, "M-ARIANE (Mirror-assisted Active Readout In A Neutron Environment): an x-ray imaging system for implosion experiments on the National Ignition Facility at ignition neutron yields", Proc. SPIE 8850, Target Diagnostics Physics and Engineering for Inertial Confinement Fusion II, 88500B (26 September 2013); doi: 10.1117/12.2025555; https://doi.org/10.1117/12.2025555
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