A5073942012- Particle accelerators and beam dynamics
- Magnetic confinement fusion research
- Plasma Diagnostics and Applications
- Nuclear Physics and Applications
- Laser-Plasma Interactions and Diagnostics
- Atomic and Molecular Physics
- Particle Accelerators and Free-Electron Lasers
- Ion-surface interactions and analysis
- Fusion materials and technologies
- Superconducting Materials and Applications
- Laser-induced spectroscopy and plasma
- Ionosphere and magnetosphere dynamics
- Metal and Thin Film Mechanics
- Mass Spectrometry Techniques and Applications
- Gyrotron and Vacuum Electronics Research
- Pulsed Power Technology Applications
- Boron Compounds in Chemistry
- Electric Power Systems and Control
- Radiation Therapy and Dosimetry
- Particle Detector Development and Performance
- Gas Dynamics and Kinetic Theory
- Magnetic Field Sensors Techniques
- Solar and Space Plasma Dynamics
- Electromagnetic Launch and Propulsion Technology
- Photocathodes and Microchannel Plates
Budker Institute of Nuclear Physics
2014-2024
Siberian Branch of the Russian Academy of Sciences
2006-2024
Novosibirsk State University
2010-2022
Russian Railways
2016-2021
Ioffe Institute
2020
Moscow Engineering Physics Institute
2018
Brookhaven National Laboratory
2011
Russian Academy of Sciences
2010
University of Wisconsin–Madison
2005
Institute for Nuclear Research
1998
The Globus-M spherical tokamak has demonstrated practically all of the project objectives during 15-year period operation. main factor limiting further progress in plasma performance is a relatively low toroidal magnetic field. maximum field achieved on was 0.4 T with exception limited number shots 0.55 T, which led to damage coil 2002. increase up 1.0 together current 0.5 MA will result significant enhancement operating parameters upgraded Globus-M2 machine. experimental program be focused...
The next step in the Wendelstein stellarator line is large superconducting device 7-X, currently under construction Greifswald, Germany. Steady-state operation an intrinsic feature of stellarators, and one key element 7-X mission to demonstrate steady-state plasma conditions relevant for a fusion power plant. device, on hand, requires implementation special technologies, giving rise technical challenges during design, fabrication assembly such device. On other also physics development at...
Development of a new linear device for confinement fusion plasmas is under way in the Budker Institute Nuclear Physics, Novosibirsk. The combines features existing GOL-3 and GDT traps, namely, central GDT-like cell with sloshing ions produced by intense neutral beam injection, multiple-mirror end sections suppression axial plasma losses. It designed as prototype an energy-efficient neutron source testbed development mirror-based reactors.
Energy confinement comparable with tokamak quality is achieved in the Madison Symmetric Torus (MST) reversed field pinch (RFP) at a high beta and low toroidal magnetic field. Magnetic fluctuations normally present RFP are reduced via parallel current drive outer region of plasma. In response, electron temperature nearly triples doubles. The time increases ten-fold (to ∼10 ms), which L- H-mode scaling values for same plasma current, density, heating power, size shape. Runaway evidenced by...
Neutral beam with geometrical focusing for plasma heating in moderate-size devices has been developed Budker Institute of Nuclear Physics, Novosibirsk. When operated hydrogen, the neutral power is 1 MW, pulse duration s, energy 40 keV, and angular divergence 1.2 degrees. Initial ion extracted accelerated by triode multiapertures ion-optical system. To produce MW beam, about A proton current nominal density 320 mA/cm(2). Ion-optical system 200 mm diameter grids 44% transparency. The have...
An overview of recent results from the MST programme on physics important for advancement reversed field pinch (RFP) as well improved understanding toroidal magnetic confinement more generally is reported. Evidence classical ions in RFP provided by analysis impurity and energetic created 1 MW neutral beam injection (NBI). The first appearance energetic-particle-driven modes NBI a plasma described. plasmas robustly access quasi-single-helicity state that has commonalities to stellarator...
A high power, relatively low energy neutral beam injector was developed to upgrade of the system gas dynamic trap device and C2-U experiment. The ion source produces a proton with particle 15 keV, current up 175 A, pulse duration few milliseconds. plasma emitter is produced by superimposing highly ionized jets from an array four arc-discharge generators. multipole magnetic field permanent magnets at periphery box used increase efficiency improve uniformity emitter. Multi-slit grids 48%...
Innovative charge-exchange recombination spectroscopy (CHERS), motional Stark effect (MSE), and Rutherford scattering diagnostics are now in operation on the Madison Symmetric Torus (MST) reversed-field pinch (RFP). The CHERS diagnostic measures impurity ion flow temperature, localized to 2cm with high time resolution (∼100kHz). A spectral MSE has been use for five years, measuring ∣B∣ down 0.2T precision (∼2%) good (10kHz). demonstrated robustness of this technique reliable measurement...
An overview of studies into the physics and technology ion neutral beams carried out at Bunker Institute Nuclear Physics, SB RAS since 1960 up to now is presented. These were initiated by Academician G I Budker for charge-exchange injection particles storage rings. Subsequently, a whole series sources created particle produced applications in accelerators plasma devices heating diagnostics.
An overview of the neutral beam injectors developed at Budker Institute Nuclear Physics in Novosibirsk during last 10 years is presented. These are used for plasma diagnostics, heating and current drive modern fusion devices with magnetic confinement. arc or a radio-frequency (RF) discharge generates ion sources injectors, positive hydrogen deuterium extracted accelerated by multiaperture ion-optical system (IOS). The converted into one gas target. precision IOS spherically concave...
A review of investigations in the physics and technology ion sources, developed Institute Nuclear Physics Novosibirsk is presented. Distinctive features physical processes technical characteristics plasma sources gaseous ions, negative surface-plasma electrohydrodynamic (liquid metal) are considered. In original design beams with a current up to 90 energies 1–30 keV formed by four-electrode multislit extraction systems from highly ionized, high brightness flux, generated an high-current arc...
Fast ions are observed to be very well confined in the Madison Symmetric Torus reversed field pinch despite presence of stochastic magnetic field. The fast-ion energy loss is consistent with classical slowing down rate, and their confinement time longer than expected by estimates. Fast-ion measured from decay d-d neutrons following a short pulse 20 keV atomic deuterium beam. Ion agrees computation particle trajectories field, understood through consideration ion guiding center islands.
A 1000 keV, 5 MW, s neutral beam injector based on negative ions is being developed in the Budker Institute of Nuclear Physics, Novosibirsk collaboration with Tri Alpha Energy, Inc. The innovative design features spatially separated ion source and an electrostatic accelerator. Plasma or photon neutralizer energy recuperation remaining species employed to provide overall efficiency system as high 80%. test stand for acceleration now under construction. prototype has been fabricated installed...
Low-divergent quasistationary neutral beams are often applied in modern magnetic fusion devices as a diagnostic tool providing unique information about plasma parameters. The most important requirements of these sufficiently large current and energy the particles, so that beam can penetrate to core. Also duration must be long enough, i.e., close discharge, amounting at least few seconds for devices. We developed injector diagnostics tokamak TEXTOR-94 which is capable meeting requirements....
Multi-slit triode ion-optical systems with spherical electrodes are of interest for formation intense focused neutral beams plasma heating. At present, two versions focusing multi-slit ion optical system developed. The first forms the proton beam 15 keV energy, 140 A current, and 30 ms duration. second is intended heating injector Tokamak Configuration Variable (TCV). produces deuterium 35 1 MW power, 2 s In later case, angular divergence 20-22 mrad in direction across slits 12 along slits.
A diagnostic neutral beam system has been developed for the Madison symmetric torus (MST) reversed-field pinch. The is primarily used: (1) measurement of majority ion equilibrium and fluctuating velocity temperature by Rutherford scattering (RS); (2) impurity temperature, both fluctuating, charge-exchange recombination spectroscopy (CHERS); (3) magnetic field via motional Stark effect (MSE). consists two injectors, particle analyzers. One injector creates a 20 keV, 4 helium RS. energy...
The behavior of energetic ions is fundamentally important in the study fusion plasmas. While well-studied tokamak, spherical torus, and stellarator plasmas, relatively little known reversed field pinch plasmas about dynamics fast effects they cause as a large population. These studies are now underway Madison Symmetric Torus with an intense 25 keV, 1 MW hydrogen neutral beam injector (NBI). Measurements time-resolved ion distribution via high energy particle analyzer, well beam-target...
An overview of recent results from the MST reversed field pinch programme is presented. With neutral beam injection, bursty energetic particle (EP) modes are observed. The profiles magnetic and density fluctuations associated with these EP measured using a far infrared interferometer–polarimeter. Equilibrium reconstructions quasi-single-helicity 3D helical state provided by V3FIT code that now incorporates several MST's advanced diagnostics. orientation structure controlled new resonant...
We report on the first results of charge exchange recombination spectroscopy (CHERS) and motional Stark effect (MSE) measurements in Madison Symmetric Torus reversed field pinch. A 30 keV, 4 neutral H beam is used combination with visible ultraviolet to make measurements. For CHERS, we find that C VI line at 3433.69 Å yields largest charge-exchange signal/background ratio most clearly resolved from other nearby lines. Equilibrium ion temperature have been made an existing fast Doppler...