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An Assessment of the Prospects for Inertial Fusion Energy (2013) / Chapter Skim
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Appendix J: Detailed Discussion of Technology Applications Event Profiles
Pages 222-230

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From page 222...
... LASER IFE EVENTS-BASED ROADMAP TO DEMO (TA-1) In addition to the target gain and laser efficiency demonstrations required before operation of an FTF or design of a DEMO reactor, additional detailed pre-conditions are required for each of three main laser IFE candidate technology applications (TAs)
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From page 223...
... 1d. A chamber design with life expectancy of >108 pulses must exist for the indirect-drive threat spectrum and the chamber design to include final optical elements.
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From page 224...
... Direct-Drive Target with KrF Laser: Preconditions for FTF or DEMO There is not an ignition-level facility available at the KrF wavelength of 248 nm with bandwidth of 3 THz. However, calculations presented to the committee based on spherical direct drive predict the lowest energy threshold for ignition to occur with KrF.
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From page 225...
... Heavy-ion fusion appears to be compatible with several types of chambers, but most power plant studies have adopted chambers with thick liquid walls to mini mize radiation damage to materials. In order to make progress on limited funds there has, for many years, been an informal agreement that the United States would pursue induction linacs while the foreign programs would pursue RF accelerators.
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From page 226...
... ion-driven targets. Since the fuel capsules for indirectly driven ion-beam fusion are similar or identical to those for indirectly driven laser fusion, and since ions have driven hohlraums to approximately 60 eV, it is much easier to make a convincing connection for indirect drive than for direct drive.
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From page 227...
... 1g. If the intermediate accelerator described in 1f successfully validates the target physics for direct and/or indirect drive and if credible target fabrication techniques and a credible chamber have been successfully demonstrated, there is enough infor mation to make a decision to construct a full-scale accelerator driver.
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From page 228...
... 1e. A conceptual chamber design with life expectancy of >107 pulses must exist for the 0.1 Hz, 10 GJ yields presently favored by PP IFE proponents, or the approach must be reoptimized at a different rep-rate and yield per pulse.
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From page 229...
... 2e. A conceptual chamber design with life expectancy of >107 pulses must exist for the 0.1 Hz, 5 GJ yields presently favored by MTF proponents.
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Key Terms

  • direct drive
  • chamber design
  • fast ignition
  • scientific breakeven
  • laser ife

  • pulsed power
  • life expectancy
  • inertial fusion
  • ife program
  • fusion energy

  • indirectly driven
  • broad ife
  • technology applications
  • computer simulations
  • threat spectrum

  • technical extension
  • ife test
  • laser fusion
  • nif laser
  • ignition facility

  • explosively driven
  • polar direct
  • krf laser
  • conceptual chamber
  • spherical direct

  • directly driven
  • conceptual design
  • target fabrication
  • magnetic implosion
  • demonstrate adequate


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