A5013899014- Magnetic confinement fusion research
- Plasma Diagnostics and Applications
- Nuclear Physics and Applications
- Laser-induced spectroscopy and plasma
- Laser-Plasma Interactions and Diagnostics
- Nuclear reactor physics and engineering
- Particle accelerators and beam dynamics
- Dust and Plasma Wave Phenomena
- Solar and Space Plasma Dynamics
- Ionosphere and magnetosphere dynamics
- Radiation Detection and Scintillator Technologies
- Cold Fusion and Nuclear Reactions
- Advancements in Photolithography Techniques
- Advanced Data Storage Technologies
- Medical Imaging Techniques and Applications
- Photocathodes and Microchannel Plates
- Diverse Scientific and Economic Studies
- Plasma Applications and Diagnostics
- Electrohydrodynamics and Fluid Dynamics
- Vacuum and Plasma Arcs
- Electron and X-Ray Spectroscopy Techniques
- Particle Detector Development and Performance
- Fusion materials and technologies
Budker Institute of Nuclear Physics
2011-2024
Siberian Branch of the Russian Academy of Sciences
2009-2024
Novosibirsk State University
2009-2019
This paper summarizes the results of experiments on electron cyclotron resonance heating (ECRH) plasma obtained at axially symmetric magnetic mirror device gas dynamic trap (GDT) (Budker Institute, Novosibirsk). The main achievement is demonstration discharges with extremely high temperatures bulk electrons. According to Thomson scattering measurements, on-axis temperature averaged over several sequential shots 660 ± 50 eV peak values exceeding 900 in a few shots. corresponds an least...
A so called vortex confinement of plasma in axially symmetric mirror device was studied. This recently developed approach enables to significantly reduce transverse particle and heat losses typically caused by MHD instabilities which can be excited this case. Vortex regime established application different potentials the radial limiters end-plates. As a result, sheared flow at periphery appears wraps core. Experiments were carried out on gas dynamic trap device, where hot ions with mean...
The paper describes experiment devoted to the field reversal in a mirror trap with neutral beam injection, which is planned for realization now Budker Institute. technical details of experimental device and expected plasma parameters are discussed. In accordance theoretical predictions, facility (neutral current − 240 atom A, energy neutrals 15 keV, magnetic 0.2 T, electron temperature 50 eV target density ∼1013−1014 cm−3) be sufficient case, if anomalous ion losses not essential.
The Budker Institute of Nuclear Physics in worldwide collaboration has developed a project 14 MeV neutron source for fusion material studies and other applications. projected the plasma type is based on gas dynamic trap (GDT), which special magnetic mirror system confinement. Essential progress parameters been achieved recent experiments at GDT facility Institute, hydrogen (deuterium) prototype source. Stable confinement hot-ion plasmas with relative pressure exceeding 0.5 was demonstrated....
A system for electron cyclotron resonance plasma heating (ECRH) has been recently installed at the GDT (Gas Dynamic Trap) facility Budker Institute. The is based on two 5.5-mm gyrotrons and designed to deliver microwave beams with total power of 700 kW X-mode polarization that are absorbed fundamental harmonic. significant increase basic parameters (energy content, temperature, neutron flux) during injection radiation registered. In particular, on-axis temperature was increased from 200 eV...
The spatial structure of electromagnetic plasma-induced waves has been defined in the high-energy content regime Gas Dynamic Trap operation. with smallest non-axisymmetric azimuthal mode m = 1 propagating direction ion-diamagnetic drift current have observed. Polarization excited changes their from that ion gyration to electron as distance symmetry axis is increased. These data confirm assumption instability observed Alfvén ion-cyclotron one. longitudinal velocity range particles responsible...
This paper presents a brief review of experimental results obtained on the Gas Dynamic Trap (GDT) device during last few years. Special attention is paid to problems longitudinal plasma confinement and suppression transverse transport caused by magnetohydrodynamic instabilities in mirror traps with an axisymmetric magnetic field configuration. We also consider auxiliary electron cyclotron resonance heating GDT plasma. Electromagnetic fluctuations driven anisotropic high pressure will be...
Abstract The paper describes experiments on the injection of an electron beam into a gas at dynamic trap (GDT) and develops technique for creating starting plasma with parameters sufficient its subsequent heating by neutral beams. It is found that relatively thin capable ionizing in entire volume trap, turbulence it excites accelerating some electrons to energies tens times higher than initial energy beam. shown that, contrast early tabletop open traps, collective relaxation under GDT...
Paper presents a brief overview of the studies carried out in 2016-2018 at Gas Dynamic Trap device Budker Institute. These were focused on experimental substantiation new version Multi-mirror project, which is aimed developing key technologies needed to implement number thermonuclear applications linear magnetic traps. The paper reviews work stable plasma confinement under auxiliary ECR heating. We showed that value on-axis electron temperature up 450 eV density 1.2 × 1019 m−3 can be...
Plasma generated electromagnetic oscillations at the frequency an order ion-cyclotron have been investigated in high energy content regimes of GDT operation. That waves are found to be Alfvén instability. The microinstability threshold scaling law has defined: with increase plasma column radius Larmor ratio value diamagnetism midplane decreases. It qualitatively matches theoretical calculations.
The paper includes a brief overview of previous researches on the stabilization MHD instabilities, study micro-instabilities, and demonstration tangible increase electron temperature with application auxiliary ECR heating. A review results recent related to microwave radiation for plasma generation, heating in GDT device is presented. summarizes also that oriented expander physics.
Presented paper is the next step in research of axial transport Gas Dynamic Trap. Experiments dedicated to neutral gas role expander mirror device were carried out. Ion current density distribution measured at end plate does not depend on expander. Experimental indications extrusion from axis its periphery observed. Numerical model describing such by elastic collisions neutrals with plasma ions agreement experimental data.
The report presents the recent results of experiments with deuterium neutral beam injection in Gas Dynamic Trap (GDT) device. Neutron scintillation detector and single particle proton near fast ions mirror point allow to control DD activity each shot. A system for spatial measurements fusion protons is prepared. reaction yield are needed compare predictions theory based on two-body Coulomb collisions.
Neutron/gamma ray spectrometer based on a single-crystal stilbene scintillator with the photomultiplier tube 9266B was developed and tested. Signal acquisition real-time processing is enabled by fast ADC wide-band preamplifier Field-Programmable Gate Array (FPGA) core. The method of n/γ event separation frequency gradient analysis implemented. paper shows efficiency delivered spectrometer. energy scale calibration gamma channel carried out radionuclide sources. neutron done using...
This paper is devoted to experimental studies of plasma confinement with high relative pressure ( $\beta$ ) in the Gas Dynamic Trap (BINP, Novosibirsk). In previous high- a maximum local $\beta = 0.6$ was achieved fast-ion turning point, contributed by beam-driven population fast ions an anisotropic distribution function. this study axial magnetic field profile modified bring points closer one another, which effectively increased energy density and pushed value higher. Experiments were...
The diagnostics for a fusion reaction of the product registration at Gas dynamic trap facility during deuterium neutral beam injection is described in this review. Both 3.02 MeV protons and 2.45 neutrons registrations are used GDT experiment. advantages these two products discussed paper. Also intensity neutron flux parameters presented article. In addition, new multichannel with improved here.
The development of fusion energy will require materials resilient to harsh bombardment by energetic neutrons and plasma. Gas Dynamic Trap (GDT) concept in Novosibirsk is proposed as a neutron plasma source test validate appropriate materials. Recent results showed beta 0.6, provide solid basis for extrapolating relevant source. Relative previous magnetic mirror sources, the GDT operates with simpler axisymmetric magnets at higher efficiency. Plasma device operating present time Budker...
The junction termination extension (JTE) avalanche diode (AD) for direct detection of nuclear particles was built with the use planar technology processing. active area detector JTE structure have been processed simultaneously, by one implantation boron step followed diffusion up to depth 14 mum. contact layer (p <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> region) had thickness 80 nm and created a molecular beam epitaxy get energy...