2.5D Numerical Simulation of Excitation of Coherent Chain of Electron Wake-Field Bubbles by Optimal Non-Resonant Chain of Dense Relativistic Electron Bunches

2010 ◽  
Author(s):  
V. I. Maslov ◽  
K. V. Lotov ◽  
I. N. Onishchenko ◽  
O. M. Svistun ◽  
Giuseppe Bertin ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Relativistic Electron ◽  
Wake Field ◽  
Electron Bunches

scholarly journals Plasma wake-field excitation by relativistic electron bunches and charged particle acceleration in the presence of external magnetic field

2001 ◽  
Vol 19 (4) ◽  
pp. 597-604 ◽  
Author(s):  
V.A. BALAKIREV ◽  
V.I. KARAS' ◽  
I.V. KARAS' ◽  
V.D. LEVCHENKO
Keyword(s):  
Magnetic Field ◽  
Relativistic Electron ◽  
Magnetoactive Plasma ◽  
High Amplitude ◽  
Plasma Dynamics ◽  
Wake Field ◽  
Electron Bunches ◽  
Plasma Bunch ◽  
Field Excitation ◽  
Wake Fields

High-amplitude plasma wake waves are excited by high-density relativistic electron bunches (REB) moving in a plasma. The wake-fields can be used to accelerate charged particles, to serve as electrostatic wigglers in plasma free-electron lasers (FEL), and also can find many other applications. The electromagnetic fields in the region occupied by the bunch control the dynamics of the bunch itself. This paper presents the results of 2.5-dimensional numerical simulation of the modulation of a long REB in a plasma, the excitation of wake-fields by bunches in a plasma, in particular, in magnetoactive plasma. The previous one-dimensional study has shown that the density-profile modulation of a long bunch moving in plasma results in the growth of the coherent wake-wave amplitude. The bunch modulation occurs at the plasma frequency. The present study is concerned with the REB motion, taking into account the plasma and REB nonlinearities. It is demonstrated that the nonlinear REB/plasma dynamics exerts primary effect on both the REB self-modulation and the wake-field excitation by the bunches formed. We have demonstrated that a multiple excess of the accelerated bunch energy εmax over the energy of the exciting REB is possible in a magnetoactive plasma for a certain relationship between the parameters of the “plasma–bunch–magnetic field” system (owing to a hybrid volume–surface character of REB-excited wake-fields).

scholarly journals Laser wake field acceleration with controlled self-injection by sharp density transition

2004 ◽  
Vol 22 (4) ◽  
pp. 423-429 ◽  
Author(s):  
P. TOMASSINI ◽  
M. GALIMBERTI ◽  
A. GIULIETTI ◽  
D. GIULIETTI ◽  
L.A. GIZZI ◽  
...  
Keyword(s):  
Relativistic Electron ◽  
Plasma Density ◽  
Electron Bunch ◽  
Energetic Particles ◽  
Energy Spread ◽  
Promising Method ◽  
Acceleration Phase ◽  
Wake Field ◽  
Electron Bunches ◽  
Thin Foils

Laser Wake Field Acceleration of relativistic electron bunches is a promising method to produce a large amount of energetic particles with table top equipment. One of the possible methods to inject particles in the appropriate acceleration phase of the wake behind the pulse takes advantage of the partial longitudinal breaking of the wake crests across a density downramp. In this paper results of 2.5D PIC simulations, showing the production of an electron bunch with reduced energy spread, are reported. Also, a possible method to produce the required plasma density transition by laser explosion of a suitable couple of thin foils is discussed.

scholarly journals HOMOGENEOUS FOCUSING FIELD FOR SHORT RELATIVISTIC ELECTRON BUNCHES IN PLASMA

2020 ◽  
pp. 68-72
Author(s):  
V.I. Maslov ◽  
I.P. Levchuk ◽  
D.S. Bondar ◽  
I.N. Onishchenko
Keyword(s):  
Numerical Simulation ◽  
Relativistic Electron ◽  
Electron Bunches

Plasma wake lens in which all short relativistic electron bunches of sequence are focused identically and uniformly is studied analytically and by numerical simulation. For two types of lenses necessary parameters of focused sequence of relativistic electron bunches are formulated. Verification of these parameters is performed by numerical simulation.

scholarly journals DEPENDENCE OF WAKEFIELD EXCITATION IN PLASMA BY NON-RESONANT SEQUENCE OF ELECTRON BUNCHES ON THEIR LENGTHS

2021 ◽  
pp. 65-69
Author(s):  
D.S. Bondar ◽  
A.P. Boychenko ◽  
V.I. Maslov ◽  
I.N. Onishchenko ◽  
R.T. Ovsiannikov
Keyword(s):  
Numerical Simulation ◽  
Growth Rate ◽  
Relativistic Electron ◽  
Maximum Growth ◽  
Maximum Growth Rate ◽  
Electron Bunches

The present paper describes the results of numerical simulation (using 2d3v code LCODE) of the regime, when the wakefield is excited at maximum growth rate in the plasma by a nonresonant sequence of relativistic electron bunches. As a result, the wakefield increases approximately in steps. The paper gives the parameters, at which this regime is achieved. It is shown that for smaller bunch radii, the amplitude of the excited wakefield is larger. At long lengths of the bunches, the amplitude of the wakefield is larger, in contrast to the excitation by the resonant sequence of bunches.

Focusing of relativistic electron bunches at the wake-field excitation in plasma

2002 ◽  
Author(s):  
Ya.B. Fainberg ◽  
N.I. Ayzatsky ◽  
V.A. Balakirev ◽  
A.K. Berezin ◽  
A.N. Dovbnya ◽  
...  
Keyword(s):  
Relativistic Electron ◽  
Wake Field ◽  
Electron Bunches ◽  
Field Excitation

scholarly journals INCREASE OF EFFICIENCY OF ACCELERATION OF THE TEST ELECTRON BUNCH BY SEQUENCE OF ELECTRON BUNCHES IN THE RECTANGULAR DIELECTRIC RESONATOR AT PLASMA FILLING

2019 ◽  
pp. 53-57
Author(s):  
P.I. Markov ◽  
I.N. Onishchenko ◽  
G.V. Sotnikov
Keyword(s):  
Numerical Simulation ◽  
Electric Field ◽  
Relativistic Electron ◽  
Plasma Density ◽  
Dielectric Resonator ◽  
Electron Bunch ◽  
Linear Growth ◽  
Energy Gain ◽  
Electron Bunches ◽  
Test Electron

A result of numerical simulation of acceleration of the test electron bunch following a sequence of relativistic electron bunches in the rectangular dielectric resonator when filling the drift channel with plasma of different density is provided. We have found out that at change of plasma density the linear growth of energy gain of test bunch electrons is observed. It is connected with structure ordering of longitudinal accelerating electric field in the resonator and also with increase in its amplitude. It is due to that at periodic injection of drive bunches on resonator axis the areas with the increased plasma electrons density are formed.

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