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Title: Control of the diocotron instability of a hollow electron beam with periodic dipole magnets

Abstract

A method to control the diocotron instability of a hollow electron beam with peri-odic dipole magnetic fields has been investigated by a two-dimensional particle-in-cell simulation. At first, relations between the diocotron instability and several physical parameters such as the electron number density, current and shape of the electron beam, and the solenoidal field strength are theoretically analyzed without periodic dipole magnetic fields. Then, we study the effects of the periodic dipole magnetic fields on the diocotron instability using the two-dimensional particle-in-cell simulation. In the simulation, we considered the periodic dipole magnetic field applied along the propagation direction of the beam, as a temporally varying magnetic field in the beam frame. Lastly, a stabilizing effect is observed when the oscillating frequency of the dipole magnetic field is optimally chosen, which increases with the increasing amplitude of the dipole magnetic field.

Authors:
 [1];  [1];  [2];  [3];  [1]
  1. Pusan National Univ., Busan (Korea)
  2. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  3. Ulsan National Institute of Science and Technology, Ulsan (Korea)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1373300
Alternate Identifier(s):
OSTI ID: 1415059
Report Number(s):
FERMILAB-PUB-17-273-AD-APC
Journal ID: ISSN 1070-664X; 1613617
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 25; Journal Issue: 1; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; diocotron instability; non-neutral plasma; particle-in-cell simulation; periodic dipole magnetic field

Citation Formats

Jo, Y. H., Kim, J. S., Stancari, G., Chung, M., and Lee, Hae June. Control of the diocotron instability of a hollow electron beam with periodic dipole magnets. United States: N. p., 2017. Web. doi:10.1063/1.5018425.
Jo, Y. H., Kim, J. S., Stancari, G., Chung, M., & Lee, Hae June. Control of the diocotron instability of a hollow electron beam with periodic dipole magnets. United States. doi:10.1063/1.5018425.
Jo, Y. H., Kim, J. S., Stancari, G., Chung, M., and Lee, Hae June. Thu . "Control of the diocotron instability of a hollow electron beam with periodic dipole magnets". United States. doi:10.1063/1.5018425. https://www.osti.gov/servlets/purl/1373300.
@article{osti_1373300,
title = {Control of the diocotron instability of a hollow electron beam with periodic dipole magnets},
author = {Jo, Y. H. and Kim, J. S. and Stancari, G. and Chung, M. and Lee, Hae June},
abstractNote = {A method to control the diocotron instability of a hollow electron beam with peri-odic dipole magnetic fields has been investigated by a two-dimensional particle-in-cell simulation. At first, relations between the diocotron instability and several physical parameters such as the electron number density, current and shape of the electron beam, and the solenoidal field strength are theoretically analyzed without periodic dipole magnetic fields. Then, we study the effects of the periodic dipole magnetic fields on the diocotron instability using the two-dimensional particle-in-cell simulation. In the simulation, we considered the periodic dipole magnetic field applied along the propagation direction of the beam, as a temporally varying magnetic field in the beam frame. Lastly, a stabilizing effect is observed when the oscillating frequency of the dipole magnetic field is optimally chosen, which increases with the increasing amplitude of the dipole magnetic field.},
doi = {10.1063/1.5018425},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 1,
volume = 25,
place = {United States},
year = {2017},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Figures / Tables:

FIG. 1 FIG. 1: Conceptual layout of the collimator system.

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Works referenced in this record:

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.