The ambipolar trap

Dimov, G. I.

doi:10.1070/pu2005v048n11abeh005804

Cited by 26 publications

(16 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finally, a series of studies has shown that open magnetic traps with reasonably improved axial confinement are completely consistent with reactorlevel fusion projects with power gain factor Q ≫ 1. Improvement of axial confinement can be achieved, for example, through the use of ambipolar plugs [6,7] or multimirror endsections [8]. The most attractive from engineering and physical standpoint are axisymmetric magnetic mirrors.…”

mentioning

confidence: 99%

Overview of ECR plasma heating experiment in the GDT magnetic mirror

et al. 2015

View full text Add to dashboard Cite

This paper summarizes the results of experiments on electron cyclotron resonance heating (ECRH) of plasma obtained at the axially symmetric magnetic mirror device gas dynamic trap (GDT) (Budker Institute, Novosibirsk). The main achievement is the demonstration of plasma discharges with extremely high temperatures of bulk electrons. According to the Thomson scattering measurements, the on-axis electron temperature averaged over several sequential shots is 660 ± 50 eV with peak values exceeding 900 eV in a few shots. This corresponds to an at least threefold increase as compared to previous experiments both at the GDT and at other comparable machines, thus demonstrating the maximum quasi-stationary (∼0.6 ms) electron temperature achieved in open traps. The breakthrough is made possible with the successful implementation of a sophisticated ECRH scheme in addition to standard heating by neutral beams (NBs). Another important result is the demonstration of the significantly increased lifetime of NB-driven fast particles with the application of ECRH, leading to a 30% higher plasma energy content at the end of the discharge. All available data including the previously demonstrated possibility of plasma confinement with β as high as 60%, allows us to consider fusion applications of axially symmetric magnetic mirror machines on a realistic basis.

show abstract

mentioning

confidence: 99%

Overview of ECR plasma heating experiment in the GDT magnetic mirror

et al. 2015

View full text Add to dashboard Cite

show abstract

“…In Ref. [5], in the case of an axisymmetric open trap, it was shown that the region of robust shell stabilization exists for the plasma with hot ions and β exceeding some threshold value [6]. Therefore, the optimization of the shell stabilization plates position is the relevant issue.…”

Section: Diamagnetic Fieldmentioning

confidence: 99%

High-Pressure Limit of Equilibrium in Axisymmetric Open Traps

Khristo

Beklemishev

2019

Plasma and Fusion Research

View full text Add to dashboard Cite

The high pressure limit of equilibrium in linear traps corresponds to the diamagnetic reduction of the confining field and the corresponding increase in the volume of flux tubes. In the gas-dynamic regime the axial losses from a flux tube are proportional to its cross-section in the mirror throat. Thus, the axial confinement time, which is proportional to the ratio of the flux-tube volume to its cross-section in the mirror throat, can grow significantly in the high-pressure limit. In this paper the numerical model of the axially symmetric equilibrium based on the coupled Grad-Shafranov and transport equations is presented. The results are in good agreement with the earlier analytical model [A.D. Beklemishev et al., Fusion Sci.

show abstract

“…AMBAL-M experiment Historically, the first experiment with mirror-machine arranged in Budker Institute was the ambipolar trap AM-BAL with quadrupole anchor cells and later on the axially symmetric AMBAL-M experiment [12]. The main goals of the AMBAL-M experiment were the study of the ambipolar plasma confinement and achieving the MHD stability of hot plasma in axisymmetric geometry using the halfcusp anchor cells.…”

Section: Lessons Learned From Previous Generation Of Magnetic Mirror Devices At Binpmentioning

confidence: 99%

Future Perspectives and Status of Magnetic Mirror Studies in Novosibirsk

Ivanov

Bagryansky

Бурдаков

et al. 2019

Plasma and Fusion Research

View full text Add to dashboard Cite

In the paper, we present the Budker Institute long term plans for development of the plasma physics database for an advanced fuel fusion reactor based on the axisymmetric linear magnetic trap. An analysis of the existing database gained in the experiments at the open magnetic systems in the Budker Institute and worldwide is presented. To develop the required database a stepwise approach is applied, which suggests construction of the several experimental devices with progressively increased plasma parameters, which incorporate the different constituents of the approach.

show abstract

The ambipolar trap

Cited by 26 publications

References 49 publications

Overview of ECR plasma heating experiment in the GDT magnetic mirror

Overview of ECR plasma heating experiment in the GDT magnetic mirror

High-Pressure Limit of Equilibrium in Axisymmetric Open Traps

Future Perspectives and Status of Magnetic Mirror Studies in Novosibirsk

Contact Info

Product

Resources

About