Manipulation of high-current pulses for heavy-ion fusion

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Description

For efficient induction-driven heavy-ion fusion, the current profile along a pulse must be modified in a non-selfsimilar manner between the accelerator and the target. In the accelerator, the pulse should have a duration of at least 50 ns in order to make efficient use of the induction cores, and the current should by nearly uniform along the pulse to minimize the aperture. In contrast, the optimal current profile on target consists of a main pulse of about 10 ns preceded by a longer low-current `foot.` This pulse-shape manipulation must be carried out at the final pulse energy (5-10 GeV for ... continued below

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12 p.

Creation Information

Sharp, W.M.; Callahan, D.A.; Griedman, A. & Grote, D.P. October 28, 1996.

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Description

For efficient induction-driven heavy-ion fusion, the current profile along a pulse must be modified in a non-selfsimilar manner between the accelerator and the target. In the accelerator, the pulse should have a duration of at least 50 ns in order to make efficient use of the induction cores, and the current should by nearly uniform along the pulse to minimize the aperture. In contrast, the optimal current profile on target consists of a main pulse of about 10 ns preceded by a longer low-current `foot.` This pulse-shape manipulation must be carried out at the final pulse energy (5-10 GeV for 200 amu ions) in the presence of a large nonlinear longitudinal space-charge field. A straightforward method is presented here for doing the required pulse shaping. Induction-ceU voltages are generated using idealized beam profiles both in the accelerator and on target, and they are verified and checked for error sensitivity using the fluid/envelope code CIRCE.

Physical Description

12 p.

Notes

INIS; OSTI as DE97051935

Source

  • Other Information: PBD: 28 Oct 1996

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  • Other: DE97051935
  • Report No.: UCRL-JC--124486
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/321865 | External Link
  • Office of Scientific & Technical Information Report Number: 321865
  • Archival Resource Key: ark:/67531/metadc689053

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Creation Date

  • October 28, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Feb. 17, 2016, 2:14 p.m.

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Sharp, W.M.; Callahan, D.A.; Griedman, A. & Grote, D.P. Manipulation of high-current pulses for heavy-ion fusion, report, October 28, 1996; California. (digital.library.unt.edu/ark:/67531/metadc689053/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.