scholarly journals Performance Optimisation of Inertial Confinement Fusion Codes using Mini-applications

2016 ◽  
Vol 32 (4) ◽  
pp. 570-581
Author(s):  
Robert F Bird ◽  
Patrick Gillies ◽  
Michael R Bareford ◽  
Andy Herdman ◽  
Stephen Jarvis
Keyword(s):  
Inertial Confinement Fusion ◽  
High Performance ◽  
Pulse Shaping ◽  
Inertial Confinement ◽  
Fusion Reactions ◽  
Simulation Code ◽  
Particle In Cell ◽  
Leading Role ◽  
Confinement Fusion ◽  
Successive Generations

Despite the recent successes of nuclear energy researchers, the scientific community still remains some distance from being able to create controlled, self-sustaining fusion reactions. Inertial Confinement Fusion (ICF) techniques represent one possible option to surpass this barrier, with scientific simulation playing a leading role in guiding and supporting their development. The simulation of such techniques allows for safe and efficient investigation of laser design and pulse shaping, as well as providing insight into the reaction as a whole. The research presented here focuses on the simulation code EPOCH, a fully relativistic particle-in-cell plasma physics code concerned with faithfully recreating laser-plasma interactions at scale. A significant challenge in developing large codes like EPOCH is maintaining effective scientific delivery on successive generations of high-performance computing architecture. To support this process, we adopt the use of mini-applications – small code proxies that encapsulate important computational properties of their larger parent counterparts. Through the development of a mini-application for EPOCH (called miniEPOCH), we investigate a variety of the performance features exhibited in EPOCH, expose opportunities for optimisation and increased scientific capability, and offer our conclusions to guide future changes to similar ICF codes.

High-performance inertial confinement fusion target implosions on OMEGA

2011 ◽  
Vol 51 (5) ◽  
pp. 053010 ◽  
Author(s):  
D.D. Meyerhofer ◽  
R.L. McCrory ◽  
R. Betti ◽  
T.R. Boehly ◽  
D.T. Casey ◽  
...  
Keyword(s):  
Inertial Confinement Fusion ◽  
High Performance ◽  
Inertial Confinement ◽  
Confinement Fusion ◽  
Fusion Target ◽  
Inertial Confinement Fusion Target

Autonomous pulse shaping method for inertial confinement fusion high power laser facility

2020 ◽  
Vol 161 ◽  
pp. 111983
Author(s):  
Xiaoxia Huang ◽  
Xuewei Deng ◽  
Wei Zhou ◽  
Huaiwen Guo ◽  
Bowang Zhao ◽  
...  
Keyword(s):  
High Power ◽  
Inertial Confinement Fusion ◽  
Pulse Shaping ◽  
Inertial Confinement ◽  
High Power Laser ◽  
Power Laser ◽  
Confinement Fusion ◽  
Laser Facility

scholarly journals OMEGA Upgrade laser for direct-drive target experiments

1993 ◽  
Vol 11 (2) ◽  
pp. 317-321 ◽  
Author(s):  
J.M. Soures ◽  
R.L. McCrory ◽  
T.R. Boehly ◽  
R.S. Craxton ◽  
S.D. Jacobs ◽  
...  
Keyword(s):  
Pulse Shape ◽  
Inertial Confinement Fusion ◽  
Pulse Shaping ◽  
Laser System ◽  
Beam Power ◽  
Power Balance ◽  
Inertial Confinement ◽  
Design Rationale ◽  
Direct Drive ◽  
Confinement Fusion

Validation of the direct-drive approach to inertial confinement fusion requires the development of a 351-nm wavelength, 30-kJ, 50-TW laser system with flexible pulse shaping and irradiation uniformity approaching 1%. An upgrade of the existing OMEGA direct-drive facility at Rochester is planned to meet these objectives. In this article, we review the design rationale and specifications of the OMEGA Upgrade laser with particular emphasis on techniques planned to achieve the required degree of beam smoothing, temporal pulse shape, and beam-to-beam power balance.

High-performance aromatic polyimides for inertial confinement fusion experiments

2000 ◽  
Vol 49 (9) ◽  
pp. 1021-1023 ◽  
Author(s):  
Didier Marsacq ◽  
Bruno Dufour ◽  
Beno�t Blondel ◽  
Yolande Lavergne ◽  
Gille Thevenot
Keyword(s):  
Inertial Confinement Fusion ◽  
High Performance ◽  
Inertial Confinement ◽  
Aromatic Polyimides ◽  
Confinement Fusion ◽  
Fusion Experiments

scholarly journals Direct observation of imploded core heating via fast electrons with super-penetration scheme

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
T. Gong ◽  
H. Habara ◽  
K. Sumioka ◽  
M. Yoshimoto ◽  
Y. Hayashi ◽  
...  
Keyword(s):  
Electron Beam ◽  
Direct Observation ◽  
Inertial Confinement Fusion ◽  
Short Pulse ◽  
Coupling Efficiency ◽  
High Energy ◽  
Inertial Confinement ◽  
Particle In Cell ◽  
Short Pulse Laser ◽  
Confinement Fusion

AbstractFast ignition (FI) is a promising approach for high-energy-gain inertial confinement fusion in the laboratory. To achieve ignition, the energy of a short-pulse laser is required to be delivered efficiently to the pre-compressed fuel core via a high-energy electron beam. Therefore, understanding the transport and energy deposition of this electron beam inside the pre-compressed core is the key for FI. Here we report on the direct observation of the electron beam transport and deposition in a compressed core through the stimulated Cu Kα emission in the super-penetration scheme. Simulations reproducing the experimental measurements indicate that, at the time of peak compression, about 1% of the short-pulse energy is coupled to a relatively low-density core with a radius of 70 μm. Analysis with the support of 2D particle-in-cell simulations uncovers the key factors improving this coupling efficiency. Our findings are of critical importance for optimizing FI experiments in a super-penetration scheme.

Three-dimensional electromagnetic relativistic particle-in-cell code VLPL (Virtual Laser Plasma Lab)

1999 ◽  
Vol 61 (3) ◽  
pp. 425-433 ◽  
Author(s):  
A. PUKHOV
Keyword(s):  
Laser Plasma ◽  
Inertial Confinement Fusion ◽  
Three Dimensional ◽  
Inertial Confinement ◽  
Particle In Cell ◽  
Laser Plasma Interactions ◽  
Electromagnetic Simulations ◽  
Self Focusing ◽  
Confinement Fusion ◽  
Pic Code

The three-dimensional particle-in-cell (PIC) code VLPL (Virtual Laser Plasma Lab) allows, for the first time, direct fully electromagnetic simulations of relativistic laser–plasma interactions. Physical results on relativistic self-focusing in under-dense plasma are presented. It is shown that background plasma electrons are accelerated to multi-MeV energies and 104 T magnetic fields are generated in the process of self-focusing at high laser intensities. This physics is crucial for the fast ignitor concept in inertial confinement fusion. Advances in the numerical PIC algorithm used in the code VLPL are reviewed here.

scholarly journals Inertial confinement fusion: a defence context

2020 ◽  
Vol 378 (2184) ◽  
pp. 20200012 ◽  
Author(s):  
Andrew Randewich ◽  
Rob Lock ◽  
Warren Garbett ◽  
Dominic Bethencourt-Smith
Keyword(s):  
Inertial Confinement Fusion ◽  
High Performance ◽  
Fusion Energy ◽  
High Gain ◽  
High Energy ◽  
High Energy Density ◽  
Inertial Confinement ◽  
Science And Engineering ◽  
Confinement Fusion ◽  
The Uk

Almost 30 years since the last UK nuclear test, it remains necessary regularly to underwrite the safety and effectiveness of the National Nuclear Deterrent. To do so has been possible to date because of the development of continually improving science and engineering tools running on ever more powerful high-performance computing platforms, underpinned by cutting-edge experimental facilities. While some of these facilities, such as the Orion laser, are based in the UK, others are accessed by international collaboration. This is most notably with the USA via capabilities such as the National Ignition Facility, but also with France where a joint hydrodynamics facility is nearing completion following establishment of a Treaty in 2010. Despite the remarkable capability of the science and engineering tools, there is an increasing requirement for experiments as materials age and systems inevitably evolve further from what was specifically trialled at underground nuclear tests (UGTs). The data from UGTs will remain the best possible representation of the extreme conditions generated in a nuclear explosion, but it is essential to supplement these data by realizing new capabilities that will bring us closer to achieving laboratory simulations of these conditions. For high-energy-density physics, the most promising technique for generating temperatures and densities of interest is inertial confinement fusion (ICF). Continued research in ICF by the UK will support the certification of the deterrent for decades to come; hence the UK works closely with the international community to develop ICF science. UK Ministry of Defence © Crown Owned Copyright 2020/AWE. This article is part of a discussion meeting issue ‘Prospects for high gain inertial fusion energy (part 1)'.

scholarly journals Synergism in inertial confinement fusion: a total direct energy conversion package

1989 ◽  
Vol 7 (3) ◽  
pp. 449-466 ◽  
Author(s):  
M. A. Prelas ◽  
E. J. Charlson
Keyword(s):  
Energy Conversion ◽  
Inertial Confinement Fusion ◽  
Fusion Reaction ◽  
Inertial Confinement ◽  
Fusion Reactions ◽  
Direct Energy Conversion ◽  
Transport Length ◽  
Confinement Fusion ◽  
Direct Energy ◽  
Energy Conversion Devices

The products of fusion reactions have unique properties which can be used for direct energy conversion. These products are neutrons and ions. Neutrons can be transported very long distances through solid materials and can interact with certain elements which have a very high absorption cross section. Ions on the other hand have a very short transport length even in a gaseous medium. It is possible to utilize these products in an inertial confinement fusion reactor with two different direct energy conversion devices: a nuclear-pumped laser using neutrons from the fusion reaction; a photon generator material combined with a photovoltaic converter using the ionic fusion products.It will be argued that a nuclear-pumped laser can be more efficient than a conventional laser. It will also be shown that an advanced energy conversion concept based on photon production and photovoltaics can produce ICF system efficiencies of 56%.

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