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Simple Drift-Diffusion Model for Calculating the Neutralization Time of H(sup -) in Xe Gas for Choppers placed in the LEBT.


DE2010974354

Publication Date 2010
Personal Author Tan, C.
Page Count 25
Abstract The neutralization of H(sup -) beam with a gas like Xe is an important part of low energy beam transport (LEBT). It is well known that choppers which use an electric field when placed in the LEBT strongly affects the neutralization of H(sup -). The question then naturally arises as to whether a magnetic chopper has a better neutralization time than an electric chopper. To answer this question, a simple 1-space, 1 time drift-diffusion model of H(sup -) beam in Xe gas has been used to calculate the neutralization times for the following scenarios: (a) a region initially cleared of Xe+ ions with an electric field but partially neutralized outside, (b) a region within and outside the chopper which is initially partially neutralized.
Keywords
  • Beam transport
  • Electric fields
  • Xenon
  • Diffusion
  • Ions
  • Neutralization
Source Agency
  • Technical Information Center Oak Ridge Tennessee
Corporate Authors Fermi National Accelerator Lab., Batavia, IL. Accelerator Div.; Department of Energy, Washington, DC.
Supplemental Notes Sponsored by Department of Energy, Washington, DC.
Document Type Technical Report
NTIS Issue Number 201020
Contract Number
  • AC02-76CH03000
Simple Drift-Diffusion Model for Calculating the Neutralization Time of H(sup -) in Xe Gas for Choppers placed in the LEBT.
Simple Drift-Diffusion Model for Calculating the Neutralization Time of H(sup -) in Xe Gas for Choppers placed in the LEBT.
DE2010974354

  • Beam transport
  • Electric fields
  • Xenon
  • Diffusion
  • Ions
  • Neutralization
  • Technical Information Center Oak Ridge Tennessee
  • AC02-76CH03000
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