Conveners
Plasma confinement, heating and stability
- Taihyeop Lho (Plasma Technology Research Center, National Fusion Research Institute, Korea)
- Cary Forest (University of Wisconsin, Madison)
Dr
Mikhail Viktorov
(Institute of Applied Physics of Russian Academy of Sciences)
09/08/2016, 14:10
Plasma confinement, heating and stability
Plenary
Study of plasma instabilities in the electron cyclotron frequency range, which were carried out over the last decade at the IAP RAS (Nizhny Novgorod), has resulted in a significant progress in understanding the nature of these processes. The object of our research activities is the nonequilibrium plasma created and sustained by powerful radiation of a gyrotron (80 kW @ 37.5 GHz) under the...
Dr
Andrey Kabantsev
(University of California, San Diego)
09/08/2016, 14:50
Plasma confinement, heating and stability
Oral
Experiments and theory on magnetized electron columns have characterized a novel *algebraic* damping of drift "diocotron" modes, caused by a weak flux of electrons through the resonance (critical) layer [1]. This flux-driven damping also eliminates the unwanted ion-induced exponential instability of diocotron modes. Here we suggest that a similar flux-driven damping may mitigate the classical...
Dr
Sergey Korepanov
(Tri Alpha Energy)
09/08/2016, 15:10
Plasma confinement, heating and stability
Oral
S.Korepanov for TAE team
A high temperature, stable, long-lived field-reversed configuration (FRC) plasma state has been produced in the C-2U device at Tri Alpha Energy. C-2U is the next generation of C-2 device [1-3]. The tangential co-current neutral beam injection power is increased from 4 MW to 10+MW. A new edge plasma rotation control system based on biased plasma generator is used to...
Dr
Ilan Be'ery
(Rafael Plasma Lab)
09/08/2016, 15:30
Plasma confinement, heating and stability
Oral
Active feedback can stabilize the violent flute instability and possibly make mirror traps candidates for fusion machines. A fast feedback with optical sensors and electrical actuators was implemented in a table-top mirror machine and used to study several aspects of feedback stabilization. For a cold, dense plasma the feedback reduces dramatically the flute amplitude of the first two mode....
Dr
Alexei Beklemishev
(Budker Institute of Nuclear Physics)
09/08/2016, 16:10
Plasma confinement, heating and stability
Oral
A new efficient method of confinement is proposed for use in linear traps. It is based on effect of diamagnetic expulsion of the magnetic field out of the plasma volume while beta tends to one. This effect is greater in the low-field area and weaker in mirrors, thus, if the plasma pressure grows, the equilibrium in a linear trap changes in such a way that the effective mirror ratio...
Dr
Anton Sudnikov
(Budker INP SB RAS)
09/08/2016, 16:30
Plasma confinement, heating and stability
Oral
Recent results of the Gas-Dynamic Trap show the possibility of the quasistationary confinement of the plasma with high relative pressure ($\beta\approx60$%), mean energy of hot ions of 12 keV and the electron temperature up to 0.9 keV [1]. Highly conservative extrapolation of the Gas-Dynamic Trap physics to the optimized 10-meter-long machine with D–T fuel leads to the concept of the neutron...
Dr
Ryutaro MINAMI
(Plasma Research Center, University of Tsukuba)
09/08/2016, 16:50
Plasma confinement, heating and stability
Oral
Electron cyclotron heating (ECH) power modulation experiments in GAMMA 10 tandem mirror have been started in order to generate and control the high heat flux and to make the ELM (edge localized mode) like intermittent heat load pattern for divertor simulation studies. ECH for potential formation at plug region (P-ECH) produces electron flow with high energy along the magnetic filed line. Heat...
Dr
Ivan Ivanov
(Budker Institute of Nuclear Physics)
09/08/2016, 17:10
Plasma confinement, heating and stability
Oral
Further advances of a multiple-mirror plasma confinement concept [1] previously developed in the Schegol and GOL-3 experiments in the BINP will continue with a new GOL-NB facility [2]. Unlike previous generations of traps, GOL-NB will focus on the quasi-stationary multiple-mirror confinement of neutral-beam-heated plasma with moderate parameters: $T \sim 30-100 eV$ and $n \sim...
