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 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 Hybrid LWFA–PWFA staging as a beam energy and brightness transformer: conceptual design and simulations

2019 ◽  
Vol 377 (2151) ◽  
pp. 20180175 ◽  
Author(s):  
A. Martinez de la Ossa ◽  
R. W. Assmann ◽  
M. Bussmann ◽  
S. Corde ◽  
J. P. Couperus Cabadağ ◽  
...  
Keyword(s):  
Conceptual Design ◽  
Particle Beam ◽  
Proof Of Concept ◽  
Particle In Cell ◽  
Wakefield Acceleration ◽  
Plasma Wakefield Accelerator ◽  
Simulation Results ◽  
Set Up ◽  
Plasma Wakefield ◽  
Wakefield Accelerator

We present a conceptual design for a hybrid laser-driven plasma wakefield accelerator (LWFA) to beam-driven plasma wakefield accelerator (PWFA). In this set-up, the output beams from an LWFA stage are used as input beams of a new PWFA stage. In the PWFA stage, a new witness beam of largely increased quality can be produced and accelerated to higher energies. The feasibility and the potential of this concept is shown through exemplary particle-in-cell simulations. In addition, preliminary simulation results for a proof-of-concept experiment in Helmholtz-Zentrum Dresden-Rossendorf (Germany) are shown. This article is part of the Theo Murphy meeting issue ‘Directions in particle beam-driven plasma wakefield acceleration’.

scholarly journals Betatron radiation and emittance growth in plasma wakefield accelerators

2019 ◽  
Vol 377 (2151) ◽  
pp. 20180173 ◽  
Author(s):  
P. San Miguel Claveria ◽  
E. Adli ◽  
L. D. Amorim ◽  
W. An ◽  
C. E. Clayton ◽  
...  
Keyword(s):  
Experimental Tests ◽  
Particle Beam ◽  
The Past ◽  
Wakefield Acceleration ◽  
Emittance Growth ◽  
Plasma Wakefield Accelerators ◽  
Under Construction ◽  
Plasma Wakefield ◽  
New Facility ◽  
Present Simulation

Beam-driven plasma wakefield acceleration (PWFA) has demonstrated significant progress during the past two decades of research. The new Facility for Advanced Accelerator Experimental Tests (FACET) II, currently under construction, will provide 10 GeV electron beams with unprecedented parameters for the next generation of PWFA experiments. In the context of the FACET II facility, we present simulation results on expected betatron radiation and its potential application to diagnose emittance preservation and hosing instability in the upcoming PWFA experiments. This article is part of the Theo Murphy meeting issue ‘Directions in particle beam-driven plasma wakefield acceleration’.

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 Producing multi-coloured bunches through beam-induced ionization injection in plasma wakefield accelerator

2019 ◽  
Vol 377 (2151) ◽  
pp. 20180184 ◽  
Author(s):  
N. Vafaei-Najafabadi ◽  
L. D. Amorim ◽  
E. Adli ◽  
W. An ◽  
C. I. Clarke ◽  
...  
Keyword(s):  
Experimental Evidence ◽  
Electron Beams ◽  
National Laboratory ◽  
Particle Beam ◽  
Wakefield Acceleration ◽  
Plasma Wakefield Accelerators ◽  
Plasma Wakefield Accelerator ◽  
Charge Field ◽  
Plasma Wakefield ◽  
Wakefield Accelerator

This paper discusses the properties of electron beams formed in plasma wakefield accelerators through ionization injection. In particular, the potential for generating a beam composed of co-located multi-colour beamlets is demonstrated in the case where the ionization is initiated by the evolving charge field of the drive beam itself. The physics of the processes of ionization and injection are explored through OSIRIS simulations. Experimental evidence showing similar features are presented from the data obtained in the E217 experiment at the FACET facility of the SLAC National Laboratory. This article is part of the Theo Murphy meeting issue ‘Directions in particle beam-driven plasma wakefield acceleration’.

scholarly journals Plasma wakefield linear colliders—opportunities and challenges

2019 ◽  
Vol 377 (2151) ◽  
pp. 20180419 ◽  
Author(s):  
Erik Adli
Keyword(s):  
High Efficiency ◽  
Linear Collider ◽  
Particle Beam ◽  
High Energy ◽  
Beam Power ◽  
High Luminosity ◽  
Wakefield Acceleration ◽  
Power Transfer Efficiency ◽  
Plasma Wakefield ◽  
Future Linear Collider

A linear electron-positron collider operating at TeV-scale energies will provide high precision measurements and allow, for example, precision studies of the Higgs boson as well as searches for physics beyond the standard model. A future linear collider should produce collisions at high energy, with high luminosity and with a good wall plug to beam power transfer efficiency. The luminosity per power consumed is a key metric that can be used to compare linear collider concepts. The plasma wakefield accelerator has demonstrated high-gradient, high-efficiency acceleration of an electron beam and is therefore a promising technology for a future linear collider. We will go through the opportunities of using plasma wakefield acceleration technology for a collider, as well as a few of the collider-specific challenges that must be addressed in order for a high-energy, high luminosity-per-power plasma wakefield collider to become a reality. This article is part of the Theo Murphy meeting issue ‘Directions in particle beam-driven plasma wakefield acceleration’.

scholarly journals Proton-driven plasma wakefield acceleration in AWAKE

2019 ◽  
Vol 377 (2151) ◽  
pp. 20180418 ◽  
Author(s):  
E. Gschwendtner ◽  
M. Turner ◽  
E. Adli ◽  
A. Ahuja ◽  
O. Apsimon ◽  
...  
Keyword(s):  
Nuclear Research ◽  
Particle Beam ◽  
European Organization ◽  
Wakefield Acceleration ◽  
Final Goal ◽  
First Results ◽  
Measurement Concept ◽  
20 Mev Electrons ◽  
Plasma Wakefield ◽  
Proton Bunch

In this article, we briefly summarize the experiments performed during the first run of the Advanced Wakefield Experiment, AWAKE, at CERN (European Organization for Nuclear Research). The final goal of AWAKE Run 1 (2013–2018) was to demonstrate that 10–20 MeV electrons can be accelerated to GeV energies in a plasma wakefield driven by a highly relativistic self-modulated proton bunch. We describe the experiment, outline the measurement concept and present first results. Last, we outline our plans for the future. This article is part of the Theo Murphy meeting issue ‘Directions in particle beam-driven plasma wakefield acceleration’.

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’.

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