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 periodic 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, the 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. 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:
-
- Pusan National Univ., Busan (Korea)
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Ulsan National Institute of Science and Technology, Ulsan (Korea)
- Publication Date:
- Research Org.:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- 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:
- 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. https://doi.org/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. https://doi.org/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 periodic 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, the 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. 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},
number = 1,
volume = 25,
place = {United States},
year = {Thu Dec 28 00:00:00 EST 2017},
month = {Thu Dec 28 00:00:00 EST 2017}
}
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Cited by: 8 works
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FIG. 1: Conceptual layout of the collimator system.
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