scholarly journals Plasma Beam Dumps for the EuPRAXIA Facility

Instruments ◽  
2020 ◽  
Vol 4 (2) ◽  
pp. 10
Author(s):  
Guoxing Xia ◽  
Alexandre Bonatto ◽  
Roger Pizzato Nunes ◽  
Linbo Liang ◽  
Oscar Jakobsson ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Dense Matter ◽  
Conventional Technique ◽  
Particle Accelerator ◽  
Beam Dump ◽  
Particle In Cell ◽  
Plasma Beam ◽  
Conventional Technology ◽  
Laser Plasma Accelerator ◽  
Beam Parameters

Beam dumps are indispensable components for particle accelerator facilities to absorb or dispose beam kinetic energy in a safe way. However, the design of beam dumps based on conventional technology, i.e., energy deposition via beam–dense matter interaction, makes the beam dump facility complicated and large in size, partly due to the high beam intensities and energies achieved. In addition, specific methods are needed to address the radioactive hazards that these high-power beams generate. On the other hand, the European Plasma Research Accelerator with eXcellence in Application (EuPRAXIA) project can advance the laser–plasma accelerator significantly by achieving a 1–5 GeV high-quality electron beam in a compact layout. Nevertheless, beam dumps based on the conventional technique will still produce radiation hazards and make the overall footprint less compact. Here, a plasma beam dump will be implemented to absorb the kinetic energy from the EuPRAXIA beam. In doing so, the overall compactness of the EuPRAXIA layout could be further improved, and the radioactivity generated by the facility can be mitigated. In this paper, results from particle-in-cell simulations are presented for plasma beam dumps based on EuPRAXIA beam parameters.

scholarly journals Plasma Beam Dumps for EuPRAXIA Facility

2020 ◽  
Author(s):  
Guoxing Xia ◽  
Alexandre Bonatto ◽  
Roger Pizzato Nunes ◽  
Linbo Liang ◽  
Oscar Jakobsson ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Dense Matter ◽  
Conventional Technique ◽  
Particle Accelerator ◽  
Beam Dump ◽  
Particle In Cell ◽  
Plasma Beam ◽  
Conventional Technology ◽  
Laser Plasma Accelerator ◽  
Beam Parameters

Beam dumps are indispensable components for particle accelerator facilities to absorb or dispose beam kinetic energy in a safe way. However, the design of beam dumps based on conventional technology, i.e. the energy deposition via beam-dense matter interaction, makes the beam dump facility complicated and large in size, partly due to nowadays’ high beam intensities and energies achieved. In addition, these high-power beams generate radioactive hazards, which need specific methods to deal with. On the other hand, the EuPRAXIA project can advance the laser-plasma accelerator significantly by achieving 1-5 GeV high quality electron beam in a compact layout. Nevertheless, the beam dump based on conventional technique will still produce radiation hazards and make the overall footprint less compact. Here, we propose to implement a plasma beam dump to absorb the kinetic energy from the EuPRAXIA beam. In doing so, the overall compactness of the EuPRAXIA layout will not be impacted, and the radioactivity generated by the facility can be mitigated. In this paper, results from particle-in-cell (PIC) simulations are presented for plasma beam dumps based on EuPRAXIA beam parameters.

scholarly journals An Active Plasma Beam Dump for EuPRAXIA Beams

Instruments ◽  
2021 ◽  
Vol 5 (3) ◽  
pp. 24
Author(s):  
Alexandre Bonatto ◽  
Roger Pizzato Nunes ◽  
Bruno Silveira Nunes ◽  
Sanjeev Kumar ◽  
Linbo Liang ◽  
...  
Keyword(s):  
Relativistic Particle ◽  
Active Plasma ◽  
Particle Beams ◽  
High Power Lasers ◽  
Beam Dump ◽  
Particle In Cell ◽  
Plasma Beam ◽  
Beam Output ◽  
Near Future ◽  
Plasma Wakefield

Plasma wakefields driven by high power lasers or relativistic particle beams can be orders of magnitude larger than the fields produced in conventional accelerating structures. Since the plasma wakefield is composed not only of accelerating but also of decelerating phases, this paper proposes to utilize the strong decelerating field induced by a laser pulse in the plasma to absorb the beam energy, in a scheme known as the active plasma beam dump. The design of this active plasma beam dump has considered the beam output by the EuPRAXIA facility. Analytical estimates were obtained, and compared with particle-in-cell simulations. The obtained results indicate that this active plasma beam dump can contribute for more compact, safer, and greener accelerators in the near future.

scholarly journals Uncertainties on radiation source terms of MINERVA (MYRRHA Phase 1) beam dump

2020 ◽  
Vol 239 ◽  
pp. 20003
Author(s):  
Alexey Stankovskiy ◽  
Dario Bisogni ◽  
Yurdunaz Çelik ◽  
Luca Fiorito ◽  
Gert Van den Eynde
Keyword(s):  
Radiation Source ◽  
Phase 1 ◽  
Nuclear Data ◽  
Random Excitation ◽  
Higher Moments ◽  
Source Terms ◽  
Beam Dump ◽  
Neutron Spectra ◽  
Al 6061 ◽  
Beam Parameters

In the framework of Phase I of the MYRRHA project implementation, the superconducting linear accelerator with proton beam parameters 100 MeV, 4 mA is going to be built. To stop the beam, a beam dump based on Al-6061 alloy is designed. The evaluation of radiological impact of an accidental radioactivity release requires the reliable estimates of primary radiation source terms with associated uncertainties. The article addresses the propagation of nuclear data uncertainties through beam dump activation calculations. The Total Monte Carlo approach was used to generate large number of random excitation functions for residual products of proton interactions with materials of Al-6061 alloy. The residual products do not impose any feedback on proton and neutron spectra in the beam dump, moreover the calculation of the production rates is sufficient to obtain uncertainties on final activities. This significantly accelerates the uncertainty quantification allowing to study the convergence of mean and higher moments (variance, variance of variance) for individual nuclides.

Numerical investigation of a plasma beam entering transverse magnetic fields

1989 ◽  
Vol 42 (1) ◽  
pp. 91-110 ◽  
Author(s):  
J. Koga ◽  
J. L. Geary ◽  
T. Fujinami ◽  
B. S. Newberger ◽  
T. Tajima ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Transverse Magnetic ◽  
Beam Momentum ◽  
Injection Velocity ◽  
Electron Mass ◽  
Particle In Cell ◽  
Plasma Beam ◽  
Beam Injection ◽  
The Magnetic Field

We study plasma-beam injection into transverse magnetic fields using both electrostatic and electromagnetic particle-in-cell (PIC) codes. In the case of small beam momentum or energy (low drift kinetic β) we study both large- and small-ion-gyroradius beams. Large-ion-gyroradius beams with a large dielectric constant ε ≫ (M/m)½ are found to propagate across the magnetic field via E × B drifts at nearly the initial injection velocity, where and M/m is the ion-to-electron mass ratio. Beam degradation and undulations are observed, in agreement with previous experimental and analytical results. When ε is of order (M/m)½ the plasma beam propagates across field lines at only half its initial velocity and loses its coherent structure. When ε is much less than (M/m)½ the beam particles decouple at the magnetic field boundary, scattering the electrons and slightly deflecting the ions. For small-ion-gyroradius beam injection a flute-type instability is observed at the beam-magnetic-field interface. In the case of large beam momentum or energy (high drift kinetic β) we observe good penetration of a plasma beam by shielding the magnetic field from the interior of the beam (diamagnetism). However, we observe anomalously fast penetration of the magnetic field into the beam and find that the diffusion rate depends on the electron gyroradius of the beam.

scholarly journals PIC Simulations of Excited Waves in the Plasmoid Instability

2022 ◽  
Vol 8 ◽  
Author(s):  
Mahdi Shahraki Pour ◽  
Mahboub Hosseinpour
Keyword(s):  
Particle Acceleration ◽  
Kinetic Energy ◽  
Solar Corona ◽  
Current Sheet ◽  
Electromagnetic Waves ◽  
Magnetic Energy ◽  
Particle In Cell ◽  
Guide Field ◽  
Collisionless Regime ◽  
Accelerated Particles

Fragmentation of an elongated current sheet into many reconnection X-points, and therefore multiple plasmoids, occurs frequently in the solar corona. This speeds up the release of solar magnetic energy in the form of thermal and kinetic energy. Moreover, due to the presence of multiple reconnection X-points, the particle acceleration is more efficient in terms of the number of accelerated particles. This type of instability called “plasmoid instability” is accompanied with the excitation of some electrostatic/electromagnetic waves. We carried out 2D particle-in-cell simulations of this instability in the collisionless regime, with the presence of non-uniform magnetic guide field to investigate the nature of excited waves. It is shown that the nature and properties of waves excited inside and outside the current sheet are different. While the outside perturbations are transient, the inside ones are long-lived, and are directly affected by the plasmoid instability process.

Multi-layer structure formation of relativistic electron beams in plasmas

2021 ◽  
Author(s):  
Xiaojuan Wang ◽  
Zhanghu Hu ◽  
Younian Wang
Keyword(s):  
Structure Formation ◽  
Relativistic Electron ◽  
Multilayer Structure ◽  
Electron Beams ◽  
Layer Structure ◽  
Beam Radius ◽  
Pic Simulation ◽  
Particle In Cell ◽  
Relativistic Electron Beams ◽  
Beam Parameters

Abstract A two-dimensional(2D) electromagnetic particle-in-cell(PIC) simulation model is proposed to study the density evolution and collective stopping of electron beams in background plasmas. We show here the formation of the multi-layer structure of the relativistic electron beam in the plasma due to the different betatron frequency from the beam front to the beam tail. Meanwhile, the nonuniformity of the longitudinal wakefield is the essential reason for the multilayer structure formation in beam phase space. The influences of beam parameters (beam radius and transverse density profile) on the formation of the multi-layer structure and collective stopping in background plasmas are also considered.

scholarly journals A proposed demonstration of an experiment of proton-driven plasma wakefield acceleration based on CERN SPS

2012 ◽  
Vol 78 (4) ◽  
pp. 347-353 ◽  
Author(s):  
G. XIA ◽  
R. ASSMANN ◽  
R. A. FONSECA ◽  
C. HUANG ◽  
W. MORI ◽  
...  
Keyword(s):  
Nuclear Research ◽  
Experimental Program ◽  
Proton Synchrotron ◽  
Super Proton Synchrotron ◽  
European Organization ◽  
Particle In Cell ◽  
Wakefield Acceleration ◽  
Cell Simulation ◽  
Beam Parameters ◽  
Plasma Wakefield

AbstractThe proton bunch-driven plasma wakefield acceleration (PWFA) has been proposed as an approach to accelerate an electron beam to the TeV energy regime in a single plasma section. An experimental program has been recently proposed to demonstrate the capability of proton-driven PWFA by using existing proton beams from the European Organization for Nuclear Research (CERN) accelerator complex. At present, a spare Super Proton Synchrotron (SPS) tunnel, having a length of 600 m, could be used for this purpose. The layout of the experiment is introduced. Particle-in-cell simulation results based on realistic SPS beam parameters are presented. Simulations show that working in a self-modulation regime, the wakefield driven by an SPS beam can accelerate an externally injected ~10 MeV electrons to ~2 GeV in a 10-m plasma, with a plasma density of 7 × 1014 cm−3.

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