scholarly journals Hosing Instability of the Drive Electron Beam in the E157 Plasma-Wakefield Acceleration Experiment at the Stanford Linear Accelerator

2005 ◽  
Author(s):  
Brent Edward Blue
Keyword(s):  
Electron Beam ◽  
Linear Accelerator ◽  
Wakefield Acceleration ◽  
Stanford Linear Accelerator ◽  
Plasma Wakefield

The status and evolution of plasma wakefield particle accelerators

2006 ◽  
Vol 364 (1840) ◽  
pp. 577-585 ◽  
Author(s):  
C Joshi ◽  
W.B Mori
Keyword(s):  
Electric Field ◽  
Linear Accelerator ◽  
Radial Electric Field ◽  
Field Ionization ◽  
Particle Accelerators ◽  
Electron Bunches ◽  
Wakefield Acceleration ◽  
Stanford Linear Accelerator ◽  
The Status ◽  
Plasma Wakefield

The status and evolution of the electron beam-driven Plasma Wakefield Acceleration scheme is described. In particular, the effects of the radial electric field of the wake on the drive beam such as multiple envelope oscillations, hosing instability and emission of betatron radiation are described. Using ultra-short electron bunches, high-density plasmas can be produced by field ionization by the electric field of the bunch itself. Wakes excited in such plasmas have accelerated electrons in the back of the drive beam to greater that 4 GeV in just 10 cm in experiments carried out at the Stanford Linear Accelerator Centre.

scholarly journals Particle Beam Waist Location in Plasma Wakefield Acceleration: Introduction and Background

2007 ◽  
Vol 5 (4) ◽  
Author(s):  
Adrian Down
Keyword(s):  
Nonlinear Effects ◽  
Particle Beam ◽  
Maximum Energy ◽  
Beam Waist ◽  
Relativistic Electrons ◽  
Point Of Entry ◽  
Wakefield Acceleration ◽  
Stanford Linear Accelerator ◽  
Simulation Parameters ◽  
Plasma Wakefield

The role of beam waist location in interactions between a plasma and a particle beam is not yet fully understood. Nonlinear effects with the plasma make an analysis of such interactions difficult. Five simulations are presented in this report, with the waist location of a beam of ultra-relativistic electrons propagating through one meter of self-ionized lithium plasma. The simulation parameters are chosen to model the recent experiment 167 at the Stanford Linear Accelerator, relevant to the design of future plasma wakefield accelerating afterburners. It is found that beams focused near the point of entry into the plasma propagate further into the plasma and accelerate witness particles to a greater maximum energy before disintegrating. These results could indicate that ion channel formation is dependent on the drive beam waist location and that the plasma accelerating medium can have an observable effect on the focusing of the drive beam.

scholarly journals Particle physics experiments based on the AWAKE acceleration scheme

2019 ◽  
Vol 377 (2151) ◽  
pp. 20180185 ◽  
Author(s):  
M. Wing
Keyword(s):  
Electron Beam ◽  
Particle Physics ◽  
Hadron Collider ◽  
Particle Beam ◽  
High Energy ◽  
New Physics ◽  
Second Phase ◽  
Wakefield Acceleration ◽  
Very High Energy ◽  
Plasma Wakefield

New particle acceleration schemes open up exciting opportunities, potentially providing more compact or higher-energy accelerators. The AWAKE experiment at CERN is currently taking data to establish the method of proton-driven plasma wakefield acceleration. A second phase aims to demonstrate that bunches of about 10 9 electrons can be accelerated to high energy, preserving emittance and that the process is scalable with length. With this, an electron beam of O (50 GeV) could be available for new fixed-target or beam-dump experiments searching for the hidden sector, like dark photons. The rate of electrons on target could be increased by a factor of more than 1000 compared to that currently available, leading to a corresponding increase in sensitivity to new physics. Such a beam could also be brought into collision with a high-power laser and thereby probe the completely unmeasured region of strong fields at values of the Schwinger critical field. An ultimate goal is to produce an electron beam of O (3 TeV) and collide with an Large Hadron Collider proton beam. This very high-energy electron–proton collider would probe a new regime in which the structure of matter is completely unknown. This article is part of the Theo Murphy meeting issue ‘Directions in particle beam-driven plasma wakefield acceleration’.

E-157: A 1.4-m-long plasma wake field acceleration experiment using a 30 GeV electron beam from the Stanford Linear Accelerator Center Linac

2000 ◽  
Vol 7 (5) ◽  
pp. 2241-2248 ◽  
Author(s):  
M. J. Hogan ◽  
R. Assmann ◽  
F.-J. Decker ◽  
R. Iverson ◽  
P. Raimondi ◽  
...  
Keyword(s):  
Electron Beam ◽  
Linear Accelerator ◽  
Wake Field ◽  
Stanford Linear Accelerator ◽  
Stanford Linear Accelerator Center

scholarly journals Particle Beam Waist Location in Plasma Wakefield Acceleration: Methods, Data and Discussion

2007 ◽  
Vol 6 (1) ◽  
Author(s):  
Adrian Down
Keyword(s):  
Nonlinear Effects ◽  
Particle Beam ◽  
Maximum Energy ◽  
Beam Waist ◽  
Relativistic Electrons ◽  
Point Of Entry ◽  
Wakefield Acceleration ◽  
Stanford Linear Accelerator ◽  
Simulation Parameters ◽  
Plasma Wakefield

The role of beam waist location in interactions between a plasma and a particle beam is not yet fully understood. Nonlinear effects with the plasma make an analysis of such interactions difficult. Five simulations are presented in this report, with the waist location of a beam of ultra-relativistic electrons propagating through one meter of self-ionized lithium plasma. The simulation parameters are chosen to model the recent experiment 167 at the Stanford Linear Accelerator, relevant to the design of future plasma wakefield accelerating afterburners. It is found that beams focused near the point of entry into the plasma propagate further into the plasma and accelerate witness particles to a greater maximum energy before disintegrating. These results could indicate that ion channel formation is dependent on the drive beam waist location and that the plasma accelerating medium can have an observable effect on the focusing of the drive beam.

scholarly journals Radial density profile and stability of capillary discharge plasma waveguides of lengths up to 40 cm

2021 ◽  
Vol 9 ◽  
Author(s):  
M. Turner ◽  
A. J. Gonsalves ◽  
S. S. Bulanov ◽  
C. Benedetti ◽  
N. A. Bobrova ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Electron Density ◽  
Density Profile ◽  
Pulse Propagation ◽  
Spot Size ◽  
Capillary Discharge ◽  
Electron Density Profile ◽  
Plasma Waveguide ◽  
Wakefield Acceleration ◽  
Plasma Wakefield

Abstract We measured the parameter reproducibility and radial electron density profile of capillary discharge waveguides with diameters of 650 $\mathrm{\mu} \mathrm{m}$ to 2 mm and lengths of 9 to 40 cm. To the best of the authors’ knowledge, 40 cm is the longest discharge capillary plasma waveguide to date. This length is important for $\ge$ 10 GeV electron energy gain in a single laser-driven plasma wakefield acceleration stage. Evaluation of waveguide parameter variations showed that their focusing strength was stable and reproducible to $<0.2$ % and their average on-axis plasma electron density to $<1$ %. These variations explain only a small fraction of laser-driven plasma wakefield acceleration electron bunch variations observed in experiments to date. Measurements of laser pulse centroid oscillations revealed that the radial channel profile rises faster than parabolic and is in excellent agreement with magnetohydrodynamic simulation results. We show that the effects of non-parabolic contributions on Gaussian pulse propagation were negligible when the pulse was approximately matched to the channel. However, they affected pulse propagation for a non-matched configuration in which the waveguide was used as a plasma telescope to change the focused laser pulse spot size.

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