Three-dimensional simulation of an ECR plasma in a minimum-<i>B</i> trap

Dougar-Jabon, V D; Umnov, A. M.; Díaz, Dorfe

doi:10.1063/1.1429774

Cited by 16 publications

(14 citation statements)

References 8 publications

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“…Simulation by Shirkov and Zschornack [24] showed the existence of two electron components. Dougar-Jabon et al [29] saw the existence of three separate electron components. Fig.…”

Section: Monte Carlo Study Of the Confinement Time And Electron Heatingmentioning

confidence: 98%

“…Simulation of the motion of charged particles in an ECR source has been done by a number of workers [24][25][26][27][28][29][30][31][32][33]. The charge state distribution of ions have also been calculated by some simulations.…”

Section: Monte Carlo Study Of the Confinement Time And Electron Heatingmentioning

confidence: 99%

“…For simulating the ion confinement in an ECR source one has to take into account the change in the charge state undergone by the ions as a result of the electron impact [24][25][26][27][28][29][30][31][32][33]. However, for keeping the study simple we have avoided introducing ionization process (i.e., we have kept the charge of ions unchanged) as our aim is only to compare the various trap geometries to a first order.…”

Section: Introductionmentioning

confidence: 99%

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Enhancement of electron heating in an ECR trap having a mixed multipole field – A Monte Carlo study

Sarma

Taki

Bhandari

2007

Nuclear Instruments and Methods in Physics Research Section B:

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“…Simulation by Shirkov and Zschornack [24] showed the existence of two electron components. Dougar-Jabon et al [29] saw the existence of three separate electron components. Fig.…”

Section: Monte Carlo Study Of the Confinement Time And Electron Heatingmentioning

confidence: 98%

Section: Monte Carlo Study Of the Confinement Time And Electron Heatingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhancement of electron heating in an ECR trap having a mixed multipole field – A Monte Carlo study

Sarma

Taki

Bhandari

2007

Nuclear Instruments and Methods in Physics Research Section B:

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“…[2][3][4][5]. The conditions and processes that lead to multicharged ion generation in ECRIS is discussed in [1,[6][7][8][9]. Of all the parameters that determine the ion yield and the ion charge states, two of them are of importance: the magnetostatic field profile and microwave field distribution in the trap volume, especially the ECR zone location in the magnetostatic trap field.…”

Section: Introductionmentioning

confidence: 99%

Simulation of the electromagnetic field in a cylindrical cavity of an ECR ions source

Estupiñan

Orozco

Dugar-Zhabon

et al. 2017

J. Phys.: Conf. Ser.

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-He2+ source based on Penning-type discharge with electron cyclotron resonant heating by millimeter waves A V Vodopyanov, S V Golubev, I V Izotov et al. Abstract. Now there are numerous sources for multicharged ions production, each being designed for certain science or technological objectives. Electron cyclotron resonance ion sources (ECRIS) are best suited for designing heavy ion accelerators of very high energies, because they can generate multicharged ion beams at relatively great intensities. In these sources, plasma heating and its confinement are effected predominantly in minimum-B magnetic traps, this type of magnetic trap consist of two current coils used for the longitudinal magnetic confinement and a hexapole system around the cavity to generate a transversal confinement of the plasma. In an ECRIS, the electron cyclotron frequency and the microwave frequency are maintained equal on a quasi-ellipsoidal surface localized in the trap volume. It is crucial to heat electrons to energies sufficient to ionize K-and L-levels of heavy atoms. In this work, we present the preliminary numerical results concerning the space distribution of T E 111 microwave field in a cylindrical cavity. The 3D microwave field is calculated by solving the Maxwell equations through the Yee's method. The magnetic field of minimum-B configuration is determined using the BiotSavart law. The parameters of the magnetic system are that which guarantee the ECR surface location in a zone of a reasonably high microwave tension. Additionally, the accuracy of electric and magnetic fields calculations are checked.

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“…In the last few decades, many experimental efforts have been made to adapt the minimum-B geometry to a number of practical applications, each requiring specific parameters for the corresponding objectives [1]. A phenomenological study and a three-dimensional (3D) plasma simulation in a minimum-B trap [2][3][4][5] show that the space plasma structure is determined by the magnetic field pattern and the ECR surface space shape. Furthermore, the experimental data on existence of cold, hot and superhot electron groups are explained through the corresponding theoretical constructions.…”

Section: Introductionmentioning

confidence: 99%

Simulation of plasma confinement in an electron cyclotron resonance zero-B trap

Dugar-Zhabon¹,

Umnov²,

Murillo-Acevedo³

2015

Iteckne

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Resumen-Actualmente el estudio del comportamiento de plasmas en campos magnetostáticos asimétricos de configuración compleja solo es posible a través de simulación computacional. La eficiencia de confinamiento del plasma en una trampa cero-B, el cual es comprimido longitudinalmente por un espejo magnético y transversalmente por el campo de un hexapolo magnético, es determinada a través del método de partícula en celda electrostático. En el modelo simulado el plasma es calentado por microondas de 14 GH cuya potencia es transmitida a los electrones mediante resonancia ciclotrónica. La distribución espacial de la componete iónica y electrónica es mostrada. Se encuentra que la población electrónica puede ser dividida en tres grupos, fríos, calientes y super calientes. Los datos obtenidos para la distribución de la densidad tanto radial como longitudinal son comparados con las mismas distribuciones encontradas para la trampa mínimo-B. Como resultado se encuentra que la trampa cero-B presenta algunas ventajas frente a la trampa mínimo-B.Palabras clave-Trampa magnética, resonancia ciclotrónica electrónica, simulación mediante el método partícula en celda.Abstract-Currently the study of the nonlinear plasma evolution in magnetostatic fields of complex asymmetrical configurations is possible only through computer simulations. The confinement efficiency of plasma by a magnetic zero-B trap which is comprised of longitudinal mirror and transversal hexapole cusp fields is determined through a particle-in-cell method in the electrostatic approximation. In the simulation model the plasma heating by 14 GHz microwave power is realized at electron cyclotron resonance conditions. The space localizations of electron and ion components are visualized. It is found that the plasma electron population can be subdivides into cold, hot and superhot groups. The obtained data for the ion density distribution along radial and longitudinal trap directions are compared with the same distributions calculated for the case of minimum-B trap. It is found that the zero-B trap has some advantage over the minimum-B trap in reference to the Lawson criterion.

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Three-dimensional simulation of an ECR plasma in a minimum-B trap

Cited by 16 publications

References 8 publications

Enhancement of electron heating in an ECR trap having a mixed multipole field – A Monte Carlo study

Enhancement of electron heating in an ECR trap having a mixed multipole field – A Monte Carlo study

Simulation of the electromagnetic field in a cylindrical cavity of an ECR ions source

Simulation of plasma confinement in an electron cyclotron resonance zero-B trap

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