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 Mapping transient electric fields with picosecond electron bunches

2015 ◽  
Vol 112 (47) ◽  
pp. 14479-14483 ◽  
Author(s):  
Long Chen ◽  
Runze Li ◽  
Jie Chen ◽  
Pengfei Zhu ◽  
Feng Liu ◽  
...  
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Aluminum Foil ◽  
Particle Accelerators ◽  
Inversion Algorithm ◽  
Time Resolved ◽  
Electron Bunches ◽  
Laser Plasmas ◽  
Global And Local ◽  
Transient Electric Field

Transient electric fields, which are an important but hardly explored parameter of laser plasmas, can now be diagnosed experimentally with combined ultrafast temporal resolution and field sensitivity, using femtosecond to picosecond electron or proton pulses as probes. However, poor spatial resolution poses great challenges to simultaneously recording both the global and local field features. Here, we present a direct 3D measurement of a transient electric field by time-resolved electron schlieren radiography with simultaneous 80-μm spatial and 3.7-ps temporal resolutions, analyzed using an Abel inversion algorithm. The electric field here is built up at the front of an aluminum foil irradiated with a femtosecond laser pulse at 1.9 × 1012 W/cm2, where electrons are emitted at a speed of 4 × 106 m/s, resulting in a unique “peak–valley” transient electric field map with the field strength up to 105 V/m. Furthermore, time-resolved schlieren radiography with charged particle pulses should enable the mapping of various fast-evolving field structures including those found in plasma-based particle accelerators.

Plasma wakefield acceleration experiments using two subpicosecond electron bunches

2007 ◽  
Author(s):  
P. Muggli ◽  
W. D. Kimura ◽  
E. Kallos ◽  
T. C. Katsouleas ◽  
K. P. Kusche ◽  
...  
Keyword(s):  
Electron Bunches ◽  
Wakefield Acceleration ◽  
Plasma Wakefield

High-Gradient Plasma-Wakefield Acceleration with Two Subpicosecond Electron Bunches

2008 ◽  
Vol 100 (7) ◽  
Author(s):  
Efthymios Kallos ◽  
Tom Katsouleas ◽  
Wayne D. Kimura ◽  
Karl Kusche ◽  
Patric Muggli ◽  
...  
Keyword(s):  
High Gradient ◽  
Electron Bunches ◽  
Wakefield Acceleration ◽  
Plasma Wakefield

Electron and Positron Beam–Driven Plasma Acceleration

2016 ◽  
Vol 09 ◽  
pp. 63-83 ◽  
Author(s):  
Mark J. Hogan
Keyword(s):  
High Efficiency ◽  
Positron Beam ◽  
Building Blocks ◽  
Plasma Waves ◽  
High Energy ◽  
Resolving Power ◽  
Particle Accelerators ◽  
Wakefield Acceleration ◽  
Electrons And Positrons ◽  
Plasma Wakefield

Particle accelerators are the ultimate microscopes. They produce high energy beams of particles — or, in some cases, generate X-ray laser pulses — to probe the fundamental particles and forces that make up the universe and to explore the building blocks of life. But it takes huge accelerators, like the Large Hadron Collider or the two-mile-long SLAC linac, to generate beams with enough energy and resolving power. If we could achieve the same thing with accelerators just a few meters long, accelerators and particle colliders could be much smaller and cheaper. Since the first theoretical work in the early 1980s, an exciting series of experiments have aimed at accelerating electrons and positrons to high energies in a much shorter distance by having them “surf” on waves of hot, ionized gas like that found in fluorescent light tubes. Electron-beam-driven experiments have measured the integrated and dynamic aspects of plasma focusing, the bright flux of high energy betatron radiation photons, particle beam refraction at the plasma–neutral-gas interface, and the structure and amplitude of the accelerating wakefield. Gradients spanning kT/m to MT/m for focusing and 100[Formula: see text]MeV/m to 50[Formula: see text]GeV/m for acceleration have been excited in meter-long plasmas with densities of 10[Formula: see text]–10[Formula: see text][Formula: see text]cm[Formula: see text], respectively. Positron-beam-driven experiments have evidenced the more complex dynamic and integrated plasma focusing, 100[Formula: see text]MeV/m to 5[Formula: see text]GeV/m acceleration in linear and nonlinear plasma waves, and explored the dynamics of hollow channel plasma structures. Strongly beam-loaded plasma waves have accelerated beams of electrons and positrons with hundreds of pC of charge to over 5[Formula: see text]GeV in meter scale plasmas with high efficiency and narrow energy spread. These “plasma wakefield acceleration” experiments have been mounted by a diverse group of accelerator, laser and plasma researchers from national laboratories and universities around the world. This article reviews the basic principles of plasma wakefield acceleration with electron and positron beams, the current state of understanding, the push for first applications and the long range R&D roadmap toward a high energy collider.

scholarly journals Advanced schemes for underdense plasma photocathode wakefield accelerators: pathways towards ultrahigh brightness electron beams

2019 ◽  
Vol 377 (2151) ◽  
pp. 20180182 ◽  
Author(s):  
G. G. Manahan ◽  
A. F. Habib ◽  
P. Scherkl ◽  
D. Ullmann ◽  
A. Beaton ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Particle Beam ◽  
Trojan Horse ◽  
Electron Bunches ◽  
Wakefield Acceleration ◽  
Transverse Emittance ◽  
Radiation Sources ◽  
Accelerator Technology ◽  
Underdense Plasma ◽  
Plasma Wakefield

The ‘Trojan Horse’ underdense plasma photocathode scheme applied to electron beam-driven plasma wakefield acceleration has opened up a path which promises high controllability and tunability and to reach extremely good quality as regards emittance and five-dimensional beam brightness. This combination has the potential to improve the state-of-the-art in accelerator technology significantly. In this paper, we review the basic concepts of the Trojan Horse scheme and present advanced methods for tailoring both the injector laser pulses and the witness electron bunches and combine them with the Trojan Horse scheme. These new approaches will further enhance the beam qualities, such as transverse emittance and longitudinal energy spread, and may allow, for the first time, to produce ultrahigh six-dimensional brightness electron bunches, which is a necessary requirement for driving advanced radiation sources. This article is part of the Theo Murphy meeting issue ‘Directions in particle beam-driven plasma wakefield acceleration’.

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.

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