Space-charged-induced emittance growth in the transport of high-brightness electron beams

Jones, M E; Carlsten, B E

Title: Space-charged-induced emittance growth in the transport of high-brightness electron beams

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Abstract

The emittance induced by space charge in a drifting beam of finite length has been investigated, and a scaling law has been obtained from simple considerations of the different rates of expansion of different portions of the beam. The scaling law predicts the initial rate of emittance growth, before the beam shape has distorted significantly, and thus represents an upper bound on the rate of emittance increase. This scaling law has been substantiated by particle-in-cell simulation and the dependence on geometric factors evaluated for specific choices of the beam profile. For long, axially nonuniform beams, the geometric factors have been evaluated explicitly for Gaussian profiles, and other shapes.

Authors:: Jones, M E; Carlsten, B E

Publication Date:: Sun Mar 01 00:00:00 EST 1987

Research Org.:: Los Alamos National Lab., NM (USA)

OSTI Identifier:: 6643237

Report Number(s):: LA-UR-87-415; CONF-870302-62
ON: DE87007460

DOE Contract Number:: W-7405-ENG-36

Resource Type:: Conference

Resource Relation:: Conference: Particle accelerator conference, Washington, DC, USA, 16 Mar 1987; Other Information: Paper copy only, copy does not permit microfiche production

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS; BEAM EMITTANCE; SCALING LAWS; ELECTRON BEAMS; SPACE CHARGE; ANALYTICAL SOLUTION; BRIGHTNESS; COMPUTERIZED SIMULATION; BEAMS; LEPTON BEAMS; OPTICAL PROPERTIES; PARTICLE BEAMS; PHYSICAL PROPERTIES; SIMULATION; 430200* - Particle Accelerators- Beam Dynamics, Field Calculations, & Ion Optics

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                    Jones, M E, and Carlsten, B E. Space-charged-induced emittance growth in the transport of high-brightness electron beams.  United States: N. p., 1987. 
        Web.

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                    Jones, M E, & Carlsten, B E. Space-charged-induced emittance growth in the transport of high-brightness electron beams.  United States.

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                    Jones, M E, and Carlsten, B E. 1987.  
        "Space-charged-induced emittance growth in the transport of high-brightness electron beams".  United States.  https://www.osti.gov/servlets/purl/6643237.

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@article{osti_6643237,

  title        = {Space-charged-induced emittance growth in the transport of high-brightness electron beams},

  author       = {Jones, M E and Carlsten, B E},

  abstractNote = {The emittance induced by space charge in a drifting beam of finite length has been investigated, and a scaling law has been obtained from simple considerations of the different rates of expansion of different portions of the beam. The scaling law predicts the initial rate of emittance growth, before the beam shape has distorted significantly, and thus represents an upper bound on the rate of emittance increase. This scaling law has been substantiated by particle-in-cell simulation and the dependence on geometric factors evaluated for specific choices of the beam profile. For long, axially nonuniform beams, the geometric factors have been evaluated explicitly for Gaussian profiles, and other shapes.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/6643237},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sun Mar 01 00:00:00 EST 1987},

  month        = {Sun Mar 01 00:00:00 EST 1987}

}

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