Beam charge and current neutralization of high-charge-state heavy ions

Logan, B G; Callahan, D A

Title: Beam charge and current neutralization of high-charge-state heavy ions

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Abstract

High-charge-state heavy-ions may reduce the accelerator voltage and cost of heavy-ion inertial fusion drivers, if ways can be found to neutralize the space charge of the highly charged beam ions as they are focused to a target in a fusion chamber. Using 2-D Particle-In- Cell simulations, we have evaluated the effectiveness of two different methods of beam neutralization: (1) by redistribution of beam charge in a larger diameter, preformed plasma in the chamber, and (2), by introducing a cold-electron-emitting source within the beam channel at the beam entrance into the chamber. We find the latter method to be much more effective for high-charge-state ions.

Authors:: Logan, B G; Callahan, D A

Publication Date:: Wed Oct 29 00:00:00 EST 1997

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE, Washington, DC (United States)

OSTI Identifier:: 633961

Report Number(s):: UCRL-JC-127486; CONF-9709166-
ON: DE98051487; TRN: 98:009123

DOE Contract Number:: W-7405-ENG-48

Resource Type:: Conference

Resource Relation:: Conference: 12. international symposium on heavy ion inertial fusion, Heidelberg (Germany), 17-27 Sep 1997; Other Information: PBD: 29 Oct 1997

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS; COMPUTERIZED SIMULATION; BEAM NEUTRALIZATION; HEAVY ION ACCELERATORS; TWO-DIMENSIONAL CALCULATIONS; ELECTRON SOURCES; PLASMA

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                    Logan, B G, and Callahan, D A. Beam charge and current neutralization of high-charge-state heavy ions.  United States: N. p., 1997. 
        Web.

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                    Logan, B G, & Callahan, D A. Beam charge and current neutralization of high-charge-state heavy ions.  United States.

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                    Logan, B G, and Callahan, D A. 1997.  
        "Beam charge and current neutralization of high-charge-state heavy ions".  United States.  https://www.osti.gov/servlets/purl/633961.

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@article{osti_633961,

  title        = {Beam charge and current neutralization of high-charge-state heavy ions},

  author       = {Logan, B G and Callahan, D A},

  abstractNote = {High-charge-state heavy-ions may reduce the accelerator voltage and cost of heavy-ion inertial fusion drivers, if ways can be found to neutralize the space charge of the highly charged beam ions as they are focused to a target in a fusion chamber. Using 2-D Particle-In- Cell simulations, we have evaluated the effectiveness of two different methods of beam neutralization: (1) by redistribution of beam charge in a larger diameter, preformed plasma in the chamber, and (2), by introducing a cold-electron-emitting source within the beam channel at the beam entrance into the chamber. We find the latter method to be much more effective for high-charge-state ions.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/633961},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Wed Oct 29 00:00:00 EST 1997},

  month        = {Wed Oct 29 00:00:00 EST 1997}

}

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