Recirculating induction accelerators for inertial fusion: Prospects and status

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The US is developing the physics and technology of induction accelerators for heavy-ion beam-driven inertial fusion. The recirculating induction accelerator repeatedly passes beams through the same set of accelerating and focusing elements, thereby reducing both the length and gradient of the accelerator structure. This promises an attractive driver cost, if the technical challenges associated with recirculation can be met. Point designs for recirculator drivers were developed in a multi-year study by LLNL, LBNL, and FM Technologies, and that work is briefly reviewed here. To validate major elements of the recirculator concept, we are developing a small (4-5-m diameter) prototype recirculator ... continued below

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26 p.

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Friedman, A.; Barnard, J. J. & Cable, M. D. September 3, 1995.

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Description

The US is developing the physics and technology of induction accelerators for heavy-ion beam-driven inertial fusion. The recirculating induction accelerator repeatedly passes beams through the same set of accelerating and focusing elements, thereby reducing both the length and gradient of the accelerator structure. This promises an attractive driver cost, if the technical challenges associated with recirculation can be met. Point designs for recirculator drivers were developed in a multi-year study by LLNL, LBNL, and FM Technologies, and that work is briefly reviewed here. To validate major elements of the recirculator concept, we are developing a small (4-5-m diameter) prototype recirculator which will accelerate a space-charge-dominated beam of K{sup +} ions through 15 laps, from 80 to 320 keV and from 2 to 8 mA. Transverse beam confinement is effected via permanent-magnet quadrupoles; bending is via electric dipoles. This ``Small Recirculator`` is being developed in a build-and-test sequence of experiments. An injector, matching section, and linear magnetic channel using seven half-lattice periods of permanent-magnet quadrupole lenses are operational. A prototype recirculator half-lattice period is being fabricated. This paper outlines the research program, and presents initial experimental results.

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26 p.

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INIS; OSTI as DE96003696

Source

  • International symposium on heavy ion inertial fusion, Princeton, NJ (United States), 6-9 Sep 1995

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  • Other: DE96003696
  • Report No.: UCRL-JC--121455
  • Report No.: CONF-9509149--11
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 187256
  • Archival Resource Key: ark:/67531/metadc668242

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  • September 3, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Feb. 23, 2016, 12:03 p.m.

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Friedman, A.; Barnard, J. J. & Cable, M. D. Recirculating induction accelerators for inertial fusion: Prospects and status, article, September 3, 1995; California. (digital.library.unt.edu/ark:/67531/metadc668242/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.