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

Chen, Zhibin; Bagryansky, P. A.; Zeng, Qiusun; Zou, Jingting; Zhang, Keqing; Wang, Zhen; Jia, Jiangtao; Zhang, Shichao; Zhou, Xiang; Han, Tao; Yakovlev, D. V.; Prikhodko, V. V.; Meyster, Andrey; Sun, Xuan; Agren, Olov; Sandomirsky, Andrey; Shmigelsky, Evgeniy; Li, Qing; Sakamoto, M.; Xu, Zelin; Ji, Q.; Chen, Size; Han, Yuncheng; Li, Gang; Moiseenko, V. E.; Lee, Jun Young; Kotelnikov, I. A.; Zhou, Yan; Wang, Dongyao; Yu, Jie; Иванов, А. В.

doi:10.1088/1741-4326/ac4c72

Cited by 6 publications

(3 citation statements)

References 48 publications

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“…This work was initiated in the framework of ALIANCE collaboration [55,[58][59][60][61][62] Special thanks to Alexey Beklemishev for discussing the conditions for the applicability of the LoDestro equation, Victor Ilgisonis for discussing the firehose instability threshold, Alexander Milshtein for discussing the properties of second-order ordinary differential equations with…”

Section: Acknowledgmentsmentioning

confidence: 99%

Wall stabilization of the rigid ballooning m = 1 mode in a long-thin mirror trap

Kotelnikov¹,

Prikhodko²,

Yakovlev³

et al. 2022

Nucl. Fusion

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The prospect of stabilization of the $m=1$ ``rigid'' ballooning mode in an open axially symmetric long-thin trap with the help of a conducting lateral wall surrounding a column of isotropic plasma is studied. It was found that for effective wall stabilization, the beta parameter $\beta$ must exceed some critical value $\beta_{\text{crit}}$. The dependence of $\beta_{\text{crit}}$ on the mirror ratio, radial pressure profile, axial profile of the vacuum magnetic field, and the width of vacuum gap between plasma and lateral wall was studied. Minimal critical beta at the level of $70\%$ is achieved at zero vacuum gap, although stability zone at $\beta \to 1$ exists even at extremely wide vacuum gap. It is shown that when a conducting lateral wall is combined with conducting end plates simulating attachment of the end MHD stabilizers to the central cell of an open trap, there are two critical beta values and two stability zones that can merge, making stable the entire range of allowable beta values $0<\beta<1$.

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Section: Acknowledgmentsmentioning

confidence: 99%

Wall stabilization of the rigid ballooning m = 1 mode in a long-thin mirror trap

Kotelnikov¹,

Prikhodko²,

Yakovlev³

et al. 2022

Nucl. Fusion

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“…This work has been done in the framework of ALIANCE collaboration [22][23][24][25][26][27] The authors are grateful to Dmitri Yakovlev for advice on the form of presenting calculation results and the choice of terms.…”

Section: Acknowledgmentsmentioning

confidence: 99%

Influence of the shape of a conducting chamber on the stability of rigid ballooning modes in a mirror trap

Zeng,

Kotelnikov

2024

Plasma Phys. Control. Fusion

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MHD stabilization of flute and ballooning modes in an axisymmetric mirror trap is studied under the assumption of a strong Finite Larmor Radius effect that suppresses all perturbations with azimuthal numbers m ≥ 2 and makes the m = 1 mode ‘rigid’. The rigid mode can be effectively suppressed using a perfectly conducting lateral wall without any additional means of stabilization or combined with end MHD anchors. Numerical calculations were carried out for an anisotropic plasma produced in the course of neutral beam injection into the minimum of the magnetic field at the right angle to the trap axis. The stabilizing effect of the conducting shell made of a straightened cylinder is compared with a proportional chamber, which, on an enlarged scale, repeats the shape of the plasma column. It is confirmed that for convincing wall stabilization of the rigid modes, the plasma beta (β, the ratio of the plasma pressure to the magnetic field pressure) must exceed some critical value βcr2. When the conducting lateral wall is combined with conducting end plates imitating MHD end anchors, there are two critical betas and, respectively, two stability zones β < βcr1 and β > βcr2 that can merge, making the entire range 0< β <1 of betas allowable for stable plasma confinement. The dependence of the critical betas on the plasma anisotropy, mirror ratio, width of the vacuum gap between the plasma column and the lateral wall, radial pressure profile, and axial magnetic field profile is examined.

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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. Vladimir Moiseenko (KIPT) made a presentation about status of stellarator-mirror fusionfission hybrid concept [20]. KIPT is developing a stellarator-mirror neutron source and associated fusionfission reactor concept [21,22].…”

Section: Contribution To the 3rd International Workhop On Gas-dynamic...mentioning

confidence: 99%

Fusion Research in Stellarator Department of Ipp NSC Kipt

Moiseenko¹,

Dreval²,

Kovtun³

et al. 2022

Problems of Atomic Science and Technology

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This paper briefly describes intrinsic and collaborative scientific activities in the Stellarator Department of the Institute of Plasma Physics of the National Science Center “Kharkov Institute of Physics and Technology” in last two years. These activities include experiments on JET tokamak, stellarators Wendelstein 7-X and Uragan-2M, TOMAS toroidal device and theoretical studies related to modeling of radio-frequency fields in plasma and conceptual development of the stellarator-mirror fission-fusion hybrid.

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

Cited by 6 publications

References 48 publications

Wall stabilization of the rigid ballooning m = 1 mode in a long-thin mirror trap

Wall stabilization of the rigid ballooning m = 1 mode in a long-thin mirror trap

Influence of the shape of a conducting chamber on the stability of rigid ballooning modes in a mirror trap

Fusion Research in Stellarator Department of Ipp NSC Kipt

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