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582165

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Executive Summary

This document describes a method for accelerating stable rings of plasma to high speeds using a device called a Compact Torus Accelerator. The researchers aim to use these high-energy plasma rings to trigger nuclear fusion, potentially providing a low-cost and efficient way to generate power or conduct advanced physics experiments.
Analysis Confidence: High
ST_CODE: B57F64

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Source ID

DOC-LLNL_COM

Process Date

2/3/2026

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COMPLETE

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INVESTIGATIVE ANALYSIS

Layman's Executive Summary

This document describes a method for accelerating stable rings of plasma to high speeds using a device called a Compact Torus Accelerator. The researchers aim to use these high-energy plasma rings to trigger nuclear fusion, potentially providing a low-cost and efficient way to generate power or conduct advanced physics experiments.

Document Origin

The document was authored by researchers (C.W. Hartman, J.L. Eddleman, J.H. Hammer, B.G. Logan, H.S. McLean, and A.W. Molvik) at the Lawrence Livermore National Laboratory (LLNL) under a contract for the U.S. Department of Energy.

Research Purpose

The research was conducted to develop a coaxial rail-gun type accelerator capable of focusing plasma rings to high energy densities, serving as a driver for Inertial Confinement Fusion (ICF) and soft x-ray generation.

Relevancy Analysis

" This document is a critical link in the study of Field-Reversed Configurations (FRC) and compact toroids, which are central to both clean fusion energy and high-energy density physics often associated with 'black' aerospace programs. It connects the experimental work at LLNL to the broader network of fusion research involving entities like Sandia National Laboratories and the University of Wisconsin, specifically regarding alternative magnetic confinement schemes. "

Extracted Verifiable Claims

  • › Plasma rings with 100 micrograms of mass were accelerated to 40 kJ kinetic energy in the RACE device.
  • › A final velocity of 10 to the 8th power cm/s (approximately 1,000 km/s) was achieved.
  • › The work was performed under U.S. Department of Energy contract W-7405-ENG-48.
  • › The research was presented at the Workshop on Physics of Alternative Magnetic Confinement Schemes in Varenna, Italy, in October 1990.
  • › Preliminary tests achieved plasma compression ratios of 2 to 3.

Technical Contribution

This document provides specific experimental results from the RACE device, proving that plasma rings can be accelerated to velocities of 1,000 kilometers per second with 20% efficiency.

FORENSIC_TRANSCRIPT_LOG

Transcript

Page 1 of 3

INTRODUCTION

./-“ UCRLi..7C-106121 PREPRINT Accelerationof Compact Toruses and Fusion Applications C.W.Hartman,J.L.Eddleman,J.H.Hammer, B.G.Logan, Thispaperwas Workshopon H.S.Mc Lean,and A.W.M61vik preparedforpresentationatthe Physicsof Alternative Magnetic Confinement Schemes Varenna,Italy October15-24,1990 October11,1990 DISCLAIMER This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California 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 United States Government or the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes. Accelerationof Compact Torusesand Fusion Applications* C.W.Hartman,J.L.Eddleman,J.H.Hammer,B.G.Logan, FLS.Mc Lean,and A.W. Molvik Lawrence Livermore National Laboratory P.O. BOX808,L-637 Livermore,CA94550