High-Pressure Limit of Equilibrium in Axisymmetric Open Traps

Khristo, Mikhail S.; Beklemishev, A. D.

doi:10.1585/pfr.14.2403007

Cited by 14 publications

(10 citation statements)

References 6 publications

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“…In the final part of the report, brief information was presented on experiments on the GDT, GOL-NB, SMOLA and CAT devices. In addition, the possibility of realizing and studying diamagnetic confinement is discussed [32,33].…”

Section: Simulations and Experimentsmentioning

confidence: 99%

Summary of the 3rd International Workshop on Gas-Dynamic Trap based Fusion Neutron Source (GDT-FNS)

Chen¹,

Bagryansky²,

Zeng³

et al. 2022

Nucl. Fusion

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The 3rd International Workshop on Gas-Dynamic Trap based Fusion Neutron Source (GDT-FNS) was held through the hybrid mode on 13-14 September 2021 in Hefei, China, jointly organized by the Hefei Institutes of Physical Science (HFIPS), Chinese Academy of Sciences (CAS), and the Budker Institute of Nuclear Physics (BINP), Russian Academy of Sciences (RAS). It followed the 1st GDT-FNS Workshop held in November 2018 in Hefei, China, and the 2nd taking place in November 2019 in Novosibirsk, Russian Federation. With the financial support from CAS and China Association for Science and Technology (CAST), this workshop was attended by more than 80 participants representing 20 institutes and universities from 7 countries, with oral presentations were broadcast via the Zoom conferencing system. 22 presentations were made with topics covering design and key technologies, simulation and experiments, steady-state operation, status of ALIANCE project, multi applications of neutron sources, and other concepts (Tokamaks, Mirrors, FRC, Plasma Focus, etc.). The workshop consensus was made including the establishment of ALIANCE International Working Group. The next GDT-FNS workshop is planned to be held in May 2022 in Novosibirsk.

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Section: Simulations and Experimentsmentioning

confidence: 99%

Summary of the 3rd International Workshop on Gas-Dynamic Trap based Fusion Neutron Source (GDT-FNS)

Chen¹,

Bagryansky²,

Zeng³

et al. 2022

Nucl. Fusion

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show abstract

“…The ion distribution function on a separate straight segment of the trajectory between successive reflection points at the cylinder boundary can be written as f(v, α; r, ψ) = A(v, α) δ(a sin(α) − r sin(θ − ψ)), (8) assuming that the indicated segment is shown by a dashed line in figure 3, makes the angle θ with the axis x and passes through the point with cylindrical coordinates (r, ψ) at a distance b = a |sin α| from the axis O of the cylinder. This representation expresses the fact that the particle density at each point of the segment defined by the equation…”

Section: Ion Trajectories In a Diamagnetic Bubblementioning

confidence: 99%

“…Calculations of the magnetic field in a diamagnetic bubble based on MHD approach are published in [18], where the numerical model of the axially symmetric equilibrium was based on the coupled Grad-Shafranov and transport equations. However, as mentioned in [1], the MHD approximation is not quite applicable.…”

Section: Introductionmentioning

confidence: 99%

On the structure of the boundary layer in a Beklemishev diamagnetic bubble

Kotelnikov

2020

Plasma Phys. Control. Fusion

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The article provides a kinetic description of the plasma equilibrium in the Beklemishev diamagnetic trap, where the traditional approach based on the theory of magnetic drifts is not applicable, since the ions move in a substantially non-circular orbit, the diameter of which is approximately equal to the diameter of the diamagnetic bubble. The ion distribution function was found in the collisionless approximation, neglecting the diamagnetic electron current. The radial profile of the magnetic field, the plasma density, the current density, and the components of the pressure tensor are calculated. It was found that the width of the boundary layer in the diamagnetic bubble varies from 6 to 8 Larmor radii calculated by the vacuum magnetic field. An adiabatic invariant is calculated that replaces the magnetic moment, which is not conserved in the diamagnetic bubble. The criterion of absolute confinement is formulated and the plasma equilibrium is found for the case when the adiabatic invariant is not conserved and only ions whose velocity satisfies the criterion of absolute confinement are trapped.

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“…Specific features of the non-paraxial diamagnetic bubble equilibria are analyzed on the basis of the simulations. Part of this work has been briefly presented at the OS2018 conference [36].…”

Section: Introductionmentioning

confidence: 99%

“…Dependence of the amplitude of the bubble boundary corrugation δa 0 /a 0 on the amplitude of the vacuum magnetic field corrugation δB v0 /B v0 on the radius r = a 0 and the corrugation period h/a 0 : (a) analytical approximation (14); (b) numerical simulation. Reprinted from[36], with permission from JSPF.…”

mentioning

confidence: 99%

Two-dimensional MHD equilibria of diamagnetic bubble in gas-dynamic trap

Khristo¹,

Beklemishev²

2022

Plasma Phys. Control. Fusion

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This article presents a magnetohydrodynamic two-dimensional numerical model of diamagnetic bubble equilibria in an axisymmetric open trap. The theoretical model consists of the Grad-Shafranov equilibrium equation and the transport equation obtained within the resistive single-ﬂuid magnetohydrodynamics with isotropic pressure. Found are the numerical solutions corresponding to the diamagnetic conﬁnement mode. In particular, the equilibria of the diamagnetic bubble in the GDMT are calculated. We investigate the eﬀect of magnetic ﬁeld corrugation on the equilibrium; the corrugation of the vacuum ﬁeld is shown to lead to a rather moderate corrugation of the bubble boundary if the period of corrugation is suﬃciently small. A valuable numerical result is the distribution of the diamagnetic ﬁeld, which would be useful for optimizing the position of the wall-stabilization plates.

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High-Pressure Limit of Equilibrium in Axisymmetric Open Traps

Cited by 14 publications

References 6 publications

Summary of the 3rd International Workshop on Gas-Dynamic Trap based Fusion Neutron Source (GDT-FNS)

Summary of the 3rd International Workshop on Gas-Dynamic Trap based Fusion Neutron Source (GDT-FNS)

On the structure of the boundary layer in a Beklemishev diamagnetic bubble

Two-dimensional MHD equilibria of diamagnetic bubble in gas-dynamic trap

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