10.7910/DVN/P05LCM O. M. Mannion, K. M. Woo, A. J. Crilly, C. J. Forrest, J. A. Frenje, V. Yu. Glebov, M. Gatu Johnson, J. P. Knauer, Z. L. Mohamed, M. H. Romanofsky, C. Stoeckl, W. Theobald, S. P. Regan Regan Harvard Dataverse 2021 Physics 3D asymmetries direct drive implosion inertial confinement fusion neutron spectrometry OMEGA Laser Facility 2021-08-16 2022-03-11 8593081 application/pdf 2.0 Custom terms specific to this dataset Three-dimensional reconstruction algorithms have been developed which determine the hot-spot velocity, hot-spot apparent ion temperature distribution, and fuel areal-density distribution present in laser-direct- drive inertial confinement fusion implosions on the OMEGA laser. These reconstructions rely on multiple independent measurements of the neutron energy spectrum emitted from the fusing plasma. Measurements of the neutron energy spectrum on OMEGA are made using a suite of quasi-orthogonal neutron time-of-flight detectors and a magnetic recoil spectrometer. These spectrometers are positioned strategically around the OMEGA target chamber to provide unique 3-D measurements of the conditions of the fusing hot spot and compressed fuel near peak compression. The uncertainties involved in these 3-D reconstructions are discussed and are used to identify a new nTOF diagnostic line of sight which when built will reduce the uncertainty in the hot-spot apparent ion temperature distribution from 700 to &lt;400 eV. <a href="http://library.psfc.mit.edu/catalog/reports/2020/20ja/20ja103/abstract.php">PSFC REPORT PSFC/JA-20-103</a><br /><br />This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0003856, the University of Rochester, and the New York State Energy Research and Development Authority. It was also supported by LLE under contract number 417532G/UR FAO GR510907. The support of DOE does not constitute an endorsement by DOE of the views expressed in this paper. This report was prepared as an account of work sponsored by an agency of the U.S. Government. Neither the U.S. Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the U.S. Government or any agency thereof. The views and opinions of authors ex- pressed herein do not necessarily state or reflect those of the U.S. Government or any agency thereof.<br /><br />If this record does not contain the full text, then the manuscript has been embargoed by the publisher thus restricting open access for 12 to 24 months after publication.