Bulletin of the American Physical Society
64th Annual Meeting of the APS Division of Plasma Physics
Volume 67, Number 15
Monday–Friday, October 17–21, 2022; Spokane, Washington
Session CO04: ICF: Compression and Burn I
2:00 PM–5:00 PM,
Monday, October 17, 2022
Room: Ballroom 111 A
Chair: Ryan Sacks, LANL
Abstract: CO04.00006 : Increasing Performance of Direct-Drive Inertial Confinement Fusion Implosions via Enhanced Energy Coupling*
3:00 PM–3:12 PM
Presenter:
Varchas Gopalaswamy
(Laboratory for Laser Energetics - Rochester)
Authors:
Varchas Gopalaswamy
(Laboratory for Laser Energetics - Rochester)
Christian Stoeckl
(University of Rochester)
Riccardo Betti
(University of Rochester)
James P Knauer
(University of Rochester)
Aarne Lees
(University of Rochester)
Dhrumir P Patel
(University of Rochester)
Connor A Williams
(University of Rochester)
Rahman Ejaz
(Laboratory for Laser Energetics, University of Rochester)
Pericles S Farmakis
(Lab for Laser Energetics)
Duc Cao
(Laboratory for Laser Energetics, U. of Rochester)
Cliff A Thomas
(University of Rochester)
Jonathan Carroll-Nellenback
(University of Rochester)
Suxing Hu
(Laboratory for Laser Energetics, University of Rochester)
Timothy J Collins
(University of Rochester)
Valeri N Goncharov
(University of Rochester)
Vladimir Y Glebov
(Lab for Laser Energetics)
Zaarah L Mohamed
(Los Alamos National Laboratory)
Chad J Forrest
(Lab for Laser Energetics)
Kristen Churnetski
(University of Rochester)
Rahul C Shah
(Laboratory for Laser Energetics - Rochester)
Steven T Ivancic
(Lab for Laser Energetics)
Michael J Rosenberg
(University of Rochester)
Hans Rinderknecht
(Laboratory for Laser Energetics - Rochester)
Sean P Regan
(Laboratory for Laser Energetics, University of Rochester)
Dana H Edgell
(LLE)
Wolfgang R Theobald
(University of Rochester)
Mark J Bonino
(University of Rochester)
Roger T Janezic
(University of Rochester)
Walter Shmyada
(University of Rochester)
Siddharth Sampat
(University of Rochester)
Owen M Mannion
(University of Rochester)
Maria Gatu-Johnson
(Massachusetts Institute of Technology MI)
Recent advances in predictive statistical modeling have led to record fusion yields and increased overall performance, as measured by the normalized no-alpha Lawson parameter cno a extrapolated to 2 MJ of symmetric drive. These increases were driven largely by (a) the introduction of silicon dopant into the ablator, which increases both collisional absorption and cross-beam energy transfer mitigation, and (b) reducing the pulse duration to couple energy more effectively at early times, when the target is relatively unconverged and silicon dopant is present throughout the corona. We will also present the results of dedicated experiments on OMEGA designed to test LILAC’s coupling model late in the pulse, which has shown good agreement with LILAC yields and areal densities. Finally, hydrodynamic scaling of the best-performing implosions to 2 MJ of symmetric drive gives cno a > 0.8, yield amplification > 3, and scaled fusion yield over 700 kJ.
*This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0003856.
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