Abstract
A plasma beam dump uses the collective oscillations of plasma electrons to absorb the kinetic energy of a particle beam. In this paper, a modified passive plasma beam dump scheme is proposed using either a gradient or stepped plasma profile to maintain a higher decelerating gradient compared with a uniform plasma. The improvement is a result of the plasma wavelength change preventing the re-acceleration of low energy particles. Particle-in-cell simulation results show that both stepped and gradient plasma profiles can achieve improved energy loss compared with a uniform plasma for an electron bunch of parameters routinely achieved in laser wakefield acceleration.
| Language | English |
|---|---|
| Article number | 023120 |
| Number of pages | 6 |
| Journal | Physics of Plasmas |
| Volume | 24 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 27 Feb 2017 |
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Keywords
- plasma beam dump
- plasma electrons
- particle acceleration
Cite this
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Simulation study of a passive plasma beam dump using varying plasma density. / Hanahoe, Kieran; Xia, Guoxing; Islam, Mohammad; Li, Yangmei; Mete-Apsimon, Öznur; Hidding, Bernhard; Smith, Jonathan.
In: Physics of Plasmas, Vol. 24, No. 2, 023120, 27.02.2017.Research output: Contribution to journal › Article
TY - JOUR
T1 - Simulation study of a passive plasma beam dump using varying plasma density
AU - Hanahoe, Kieran
AU - Xia, Guoxing
AU - Islam, Mohammad
AU - Li, Yangmei
AU - Mete-Apsimon, Öznur
AU - Hidding, Bernhard
AU - Smith, Jonathan
N1 - (c) AIP Publishing
PY - 2017/2/27
Y1 - 2017/2/27
N2 - A plasma beam dump uses the collective oscillations of plasma electrons to absorb the kinetic energy of a particle beam. In this paper, a modified passive plasma beam dump scheme is proposed using either a gradient or stepped plasma profile to maintain a higher decelerating gradient compared with a uniform plasma. The improvement is a result of the plasma wavelength change preventing the re-acceleration of low energy particles. Particle-in-cell simulation results show that both stepped and gradient plasma profiles can achieve improved energy loss compared with a uniform plasma for an electron bunch of parameters routinely achieved in laser wakefield acceleration.
AB - A plasma beam dump uses the collective oscillations of plasma electrons to absorb the kinetic energy of a particle beam. In this paper, a modified passive plasma beam dump scheme is proposed using either a gradient or stepped plasma profile to maintain a higher decelerating gradient compared with a uniform plasma. The improvement is a result of the plasma wavelength change preventing the re-acceleration of low energy particles. Particle-in-cell simulation results show that both stepped and gradient plasma profiles can achieve improved energy loss compared with a uniform plasma for an electron bunch of parameters routinely achieved in laser wakefield acceleration.
KW - plasma beam dump
KW - plasma electrons
KW - particle acceleration
U2 - 10.1063/1.4977449
DO - 10.1063/1.4977449
M3 - Article
VL - 24
JO - Physics of Plasmas
T2 - Physics of Plasmas
JF - Physics of Plasmas
SN - 1070-664X
IS - 2
M1 - 023120
ER -