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Defense Intelligence Reference Document Inertial Electrostatic Confinement Fusion

Defense Intelligence Agency · 72 pages · text from the file's own layer

This Defense Intelligence Agency reference document, dated 10 March 2010, covers inertial electrostatic confinement (IEC) fusion. It was produced in FY 2009 under the DIA's Advanced Aerospace Weapon System Applications (AAWSA) program. The report focuses on work at the University of Illinois Urbana-Champaign and reviews IEC basics, experiments, theory and applications such as neutron sources, explosives detection and space propulsion. It concludes by proposing a breakeven experiment for p-11B fusion that uses a hydrogen plasma simulation.

  • p. 8 …hence a good probability of fusing before being lost from the fusion reaction chamber. In the…
  • p. 11 …If it can, the device would be simpler and smaller than a Tokamak, making it an…
  • p. 14 …However, they showed that grid deformation could be very harmful. This deserves several comments. First, the…
  • p. 15 …Again, this issue will be addressed further later. While earlier workers sought small grid openings designed…
  • p. 17 …More insights will be provided throughout this report, but the reader is encouraged to study the…
  • p. 19 …Upscattering out of the well must be minimized while electron 12 UNCLASSIFIED//EOAt OFFIQI.«1k 11181…
  • p. 29 …It operates by convergence of ions created between the grid and wall onto a small volume…
  • p. 30 …Such thrusters, however, do not scale well to lower powers for small satellites, nor are exhaust…
  • p. 33 …first, the channel grid will be separately hinged with a small servo motor such that its…
  • p. 35 …Thus, the mass of the IEC jet thruster system can potentially be reduced compared to a…
  • p. 43 …More insight into this can be obtained from the distribution functions for trapped ions, sketched in…
  • p. 44 …The source to sink issue noted several times here can be explained as follows. Two opposite…
  • p. 47 …However, since the fusion core radius in these calculations is very small on the order of…
  • p. 49 …instability in finite spherical systems may be excited for small beam velocities compared to those of…
  • p. 50 …However, an experimental study should be performed to verify this result. RIDER - ENERGY BALANCE STUDY Todd…
  • p. 53 …In addition, since both D-D and D- 3He reactions can be used for proton production…
  • p. 54 …This can be viewed as a small scale soft source for individual laboratory studies such as…
  • p. 55 …The 14.1-MeV neutrons from the D-T reaction will be the primary source for…
  • p. 59 …Due to their small size, they can be used in a large array along with TOF…
  • p. 65 …If vis large compared to v11, the effective scattering angle will be large, resulting in retrapping…
  • p. 67 …Fortunately, the IEC can be scaled up in energy gain while keeping a small size since…
  • p. 68 …The small size of the IEC is a key characteristic. If rapid development is to be…
  • p. 71 …In other words, this could also be thought of as a Q=100 DT equivalent breakeven…
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5.3 G. H. Miley, R. Stubbers, J. Webber, H. Momota, "Magnetically-Channeled SIEC
Array (MCSA) Fusion Device for Interplanetary Missions", Space Technology and
Applications International Forum-STAIF 2004 (M.S. El Genk, Ed.) American Institute
of Physics Conf. Proceedings (2004).
5.4 H. Momota, G. H. Miley, and J. Nadler, "Direct Energy Conversion for IEC
Propulsions", Report to National Institute for Fusion Science of Japan, Report NISF-
641, ISSN 0915-633X, August (2000).
5.5 Y. Gu, M. Williams, R. Stubbers, G. Miley, "Pulsed Operation of Spherical Inertial-
Electrostatic Confinement Device," Proceeding of 12th Topical Meeting on the
Technology of Fusion Energy, ANS, Reno, NV, 16-20 June (1996), pp. 1342-1346.
Section VI. Possible Next Step Breakeven Experiment
The prior sections have presented much information about the existing data base and
theory for IEC operation. The potential for use in applications such as a neutron source
and related radiation sources (proton and x-ray) are well established. However the
ultimate goal is to develop a power-producing IEC. Better yet to do this taking
advantage of the unique ability of the IEC to use non-Maxwellian plasma to burn
advanced fuels to minimize radioactive and radiation emission involvement. However
the best current device results are 5 or 6 orders of magnitude down in energy gain Q
(energy out/ in) from breakeven. Thus it may appear that such a hope is many years
off. Fortunately, the IEC can be scaled up in energy gain while keeping a small size
since the losses are in velocity space (i.e. via ion upscattering out of the potential well
trap). This is in sharp contrast to Tokomaks where loses occur via diffusion across the
outer surface, so increased confinement times have been achieved by going to the
massively large ITER type devices. The problems and costs for construction of ITER
have thrown its development in to the distant future, making this approach ineffective
for addressing the present energy crisis (or as a LLNL associate director recently
bemoaned, "Fusion is irrelevant- no politicians even mention it in the energy scenario").
To provide the reader with some insight into the IEC "vision" for power, we next
present a conceptual proposal for a near term IEC breakeven experiment to prove the
physics of operation with aneutronic p- 11 B fuel. If such a program can be initiated
aggressively, the IEC could have a major impact on the energy crises.
DEMONSTRATION OF NET ENERGY GAIN USING IEC ANEUTRONIC
FUSION
The IEC is one of the few approaches to fusion that has the potential of burning
aneutronic fuels such as D-3He and p- 11 B in a reasonable scale device. This fuel results
in charged-particle reaction products which allow efficient use of direct energy
conversion technology with no direct greenhouse emissions and minimal radioactivity or
radioactive wastes. Such a power source has all of the features sought for future power
plants needed worldwide to turn the tide of the growing energy crisis. The experiment
proposed here would provide verifiable and reproducible proof of break-even conditions
necessary to burn p- 11B as a practical aneutronic fuel in an IEC fusion power-generating
device.
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Report, from the dia collection. The PDF is mirrored here; the original link is under it. 72 pages are in the text index: search them above, or from the library's search.