Figure from the DOE Report April, 2017

April 2017 DOE Report

Cross-Beam-Energy Transfer Diagnostic

Each OMEGA laser beam scatters unabsorbed 3ω light over the inner surface of the target chamber. A new temporally gated CBET beamlets diagnostic collects this light simultaneously from all 60 beams, and records an image using a charge-coupled–device camera. The light from each beam forms a distinct spot in the image when the image plane is placed at target chamber center. Each spot can be considered the end point of a beamlet of rays originating from a discrete point of the laser's beam spot, following a unique pathway refracting through the target's coronal plasma.

Images of scattered light from a 60-beam irradiation of a spherical target taken by the CBET diagnostic are shown here.

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