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Displaying 23 contributions out of 23
Type: Contributed Oral Session: Axisymmetric LInear Advanced Neutron sourCE
Track: Axisymmetric LInear Advanced Neutron sourCE
The report presents the design ideas behind the low- and moderate-power prototypes of continuously operating volumetric fusion neutron sources based on gas-dynamic magnetic mirror devices with neutral beam injection. A possible arrangement of vacuum, magnetic, plasma stabilization and sustainment, and neutron shielding subsystems is presented, along with their required parameters that are defined ... More
Presented by Dr. Dmitry YAKOVLEV on 18 Nov 2019 at 12:10
Type: Plenary Presentation Session: Axisymmetric LInear Advanced Neutron sourCE
Track: Axisymmetric LInear Advanced Neutron sourCE
This presentation is contributed by the Institute of Nuclear Energy Safety Technology (INEST), Chinese Academy of Sciences and the Budker Institute of Nuclear Physics (BINP), Russian Academy of Sciences. It will be presented the development strategy and plan of construction of a GDT-based fusion volumetric neutron source project named Axisymmetric LInear Advanced Neutron sourCE (ALIANCE). The goal ... More
Presented by Prof. Yican WU, Prof. Zhibin CHEN on 18 Nov 2019 at 09:40
Type: Contributed Oral Session: The use of neutron sources based on linear traps and related technologies
Track: The use of neutron sources based on linear traps and related technologies
The space propulsion system of high performance is required for deep space exploration missions such as Mars and Jupiter exploration. The fusion propulsion system has excellent performance of ultra-high specific impulse, high specific power, and moderate thrust so that it can reflect their advantages in future manned and unmanned deep space exploration. In this paper, preliminary analysis has been ... More
Presented by Mr. Jun SONG on 18 Nov 2019 at 16:25
Type: Contributed Oral Session: GDT: resent results of studies in support of the ALIANCE project
Track: GDT: resent results of studies in support of the ALIANCE project
Axial confinement of electrons in mirror trap was studied. The formation of electrostatic potential in expander divertors was examined. The numerical simulations was used to verify the theoretical estimations. The influence of secondary emission of cold electrons from end plate on plasma confinement was studied.
Presented by Dr. Dmitriy SKOVORODIN on 18 Nov 2019 at 14:25
Type: Contributed Oral Session: GDT: resent results of studies in support of the ALIANCE project
Track: GDT: resent results of studies in support of the ALIANCE project
The presented work is part of the fundamental research on the implementation of a controlled thermonuclear reaction in open-type magnetic traps. The interest in such systems is defined by the development of powerful neutron sources, which are necessary, in particular, to control hybrid fusion-fission reactors, and, with further development, the creation of purely fusion reactors for energy product ... More
Presented by Dr. Elena SOLDATKINA on 18 Nov 2019 at 14:45
Type: Contributed Oral Session: Development of the basic technologies for the ALIANCE project
Track: Development of the basic technologies for the ALIANCE project
Estimation shows that powerful Gas-Dynamic Trap operated for generating neutrons at continuous rate 1E18 1/s will release high particle flux (∼3E22 1/s of D/T mixture) out of confinement region. The vacuum vessel of the Gas-Dynamic Trap consists of central cylindrical confinement volume and two plasma expansion vessels. In order to sustain the adequate vacuum conditions in the expansion vessels ... More
Presented by Dr. Alexander KRASNOV on 19 Nov 2019 at 10:10
Type: Contributed Oral Session: GDT: resent results of studies in support of the ALIANCE project
Track: GDT: resent results of studies in support of the ALIANCE project
Devices of the GDT type belonging to the next generation are being proposed for a vast range of scientific and technological applications, including fusion neutron sources, hybrid fission-fusion power plants and others. The next step GDT-like system is deemed as a large-scale installation sustaining plasmas with a significant fusion power generation in a stationary or long-pulse regime. The paper ... More
Presented by Dr. Andrej LIZUNOV on 18 Nov 2019 at 15:25
Type: Contributed Oral Session: Research activities aimed at magnification an energy efficiency of the ALIANCE
Track: Research activities aimed at magnification an energy efficiency of the ALIANCE project
There is a possibility of enhanced plasma confinement in axially symmetric linear traps due to significant modification of equilibrium close to the upper beta limit. In general this type of equilibrium is highly unstable to ballooning modes while its low internal magnetic field may cause non-adiabatic particle losses. However, under special conditions these problems can be probably overcome. If ac ... More
Presented by Dr. Alexei BEKLEMISHEV on 19 Nov 2019 at 11:30
Type: Contributed Oral Session: GDT: resent results of studies in support of the ALIANCE project
Track: GDT: resent results of studies in support of the ALIANCE project
An analysis is made of possibility of using a device topologically equivalent to a nonparaxial MHD stabilizer as a divertor for the projected ALIANCE source of fusion neutrons on the gas-dynamic trap, which should operate in a continuous mode. A side effect of adding a divertor to a linear trap is the expected improvement in plasma MHD stability, which was previously observed at TARA [Phys. Fluids ... More
Presented by Prof. Igor KOTELNIKOV on 18 Nov 2019 at 15:45
Type: Contributed Oral Session: GDT: resent results of studies in support of the ALIANCE project
Track: GDT: resent results of studies in support of the ALIANCE project
The report provides a review of research results aimed at developing a method for generating preliminary plasma in open type magnetic traps using ECR gas breakdown. This method has proven positively itself in a number of experiments with plasma heating by neutral beam and auxiliary ECR heating at the GDT device. In addition, the results of recent studies on the development of a method for generati ... More
Presented by Dr. Peter BAGRYANSKY on 18 Nov 2019 at 15:05
Type: Contributed Oral Session: Development of the basic technologies for the ALIANCE project
Track: Development of the basic technologies for the ALIANCE project
Gas-dynamic multi-mirror trap (GDMT) is an ongoing project in development at Budker Institute of Nuclear Physics, which aims to demonstrate a leap in performance for linear axisymmetric magnetic plasma confinement systems and lay the groundwork for a full-scale development of fusion neutron sources (NS) based on gas-dynamic plasma confinement. As a multipurpose facility, GDMT is being designed to ... More
Presented by Dr. Dmitry YAKOVLEV on 19 Nov 2019 at 10:30
Type: Plenary Presentation Session: Axisymmetric LInear Advanced Neutron sourCE
Track: Axisymmetric LInear Advanced Neutron sourCE
The report presents an update on the continuing work on open magnetic traps in BINP RAS. It discusses the construction of a gas-dynamic trap with improved longitudinal confinement named GDMT, as well as the experiments on existing (GDT, SMOLA) and newly constructed (GOL-NB, CAT) devices. The report highlights the main experimental achievements obtained on the facilities of previous generation such ... More
Presented by Prof. Alexander IVANOV on 18 Nov 2019 at 10:30
Type: Contributed Oral Session: The use of neutron sources based on linear traps and related technologies
Track: The use of neutron sources based on linear traps and related technologies
The GDT-FNS medium-power hybrid thorium plant is an innovative nuclear fission-fusion facility constructively consisting of an assembly of hexagonal graphite blocks of a uniform design and a long magnetic trap for plasma confinement, which serves as a source of additional thermonuclear neutrons. The active zone of the analyzed hybrid plant consists of areas with different enrichment, contains unit ... More
Presented by Prof. Igor SHAMANIN, Prof. Andrey ARZHANNIKOV on 18 Nov 2019 at 16:45
Type: Plenary Presentation Session: Development of the basic technologies for the ALIANCE project
Track: Development of the basic technologies for the ALIANCE project
A properly shaped quadrupolar mirror magnetic field, in combination with a controllable weak radial electric field, is predicted to force each guiding center to move close to its mean magnetic surface. A neoclassical increase of radial transport would then be practically eliminated. The radial electric field may be controlled by biased end plates placed at the end tank outside the confinement regi ... More
Presented by Prof. Olov ÅGREN on 19 Nov 2019 at 09:00
Type: Plenary Presentation Session: Axisymmetric LInear Advanced Neutron sourCE
Track: Axisymmetric LInear Advanced Neutron sourCE
The report presents results of neutron shielding calculation for ALIANCE project, especially for ALIANCE-2. We used the Monte Carlo transport program SuperMC with data library FENDL 2.1. The calculation results show that the 5cm thickness of the shielding layer of ALIANCE-2 is enough. The highest nuclear thermal deposition is at Coil-3 (C3) with a value 0.92W/m3. It is much lower than ITER's nucle ... More
Presented by Dr. Qiusun ZENG on 18 Nov 2019 at 11:40
Type: Contributed Oral Session: Development of the basic technologies for the ALIANCE project
Track: Development of the basic technologies for the ALIANCE project
The paper devoted to simulation of neutron source based on gas-dynamic trap concept. DOL code was used as a main tool for numerical calculations. Stability against Drift-Cyclotron Loss-Cone (DCLC) and Double Hump (DH) modes is estimated according to [I.A.Kotelnikov, I.S.Chernoshtanov, V.V.Prikhodko. Electrostatic instabilities in a mirror trap revisited. Physics of Plasmas v. 24, p. 122512 (2017)] ... More
Presented by Dr. Vadim PRIKHODKO on 19 Nov 2019 at 10:50
Type: Contributed Oral Session: Research activities aimed at magnification an energy efficiency of the ALIANCE
Track: Research activities aimed at magnification an energy efficiency of the ALIANCE project
The recently proposed diamagnetic confinement (DC) mode (diamagnetic “bubble”) is designed to increase plasma parameters in open traps due to a significant increase in confinement time. We constructed a numerical stationary model of the diamagnetic “bubble” equilibrium in an axisymmetric open trap. The theoretical model is based on the Grad-Shafranov equilibrium equation and plasma transpo ... More
Presented by Mr. Mikhail KHRISTO on 19 Nov 2019 at 12:00
Type: Contributed Oral Session: Axisymmetric LInear Advanced Neutron sourCE
Track: Axisymmetric LInear Advanced Neutron sourCE
An international mega-science project named ALIANCE (Axisymmetric LInear Advanced Neutron sourCE) was jointly initiated by INEST CAS and BINP RAS. It is aimed at the development of fusion volumetric neutron sources based on the GDT concept of plasma confinement. The report reviews the results of numerical simulations of plasma parameters for ALIANCE project done by DOL code. Three devices are cons ... More
Presented by Dr. Vadim PRIKHODKO on 18 Nov 2019 at 12:40
Type: Contributed Oral Session: Development of the basic technologies for the ALIANCE project
Track: Development of the basic technologies for the ALIANCE project
To build-up and sustain a population of high energy ions of hydrogen isotopes in the GDT-based neutron sources, injection of a steady-state powerful focused neutral beams with energies up to 100 keV is required. Problems arising at update of the high power NBIs developed at the Budker Institute with a duration of up to 2 s to the stationary operation mode are discussed in the report. All the inje ... More
Presented by Dr. Vladimir DAVYDENKO on 19 Nov 2019 at 09:45
Type: Contributed Oral Session: Research activities aimed at magnification an energy efficiency of the ALIANCE
Track: Research activities aimed at magnification an energy efficiency of the ALIANCE project
The collisionless dynamic of ions in the axisymmetric diamagnetic trap is discussed in the report. Smallness of magnetic field leads to non-conservation of magnetic moment of ions. It can results in chaotic movement and fast losses of ions. Two mechanisms allowing ions to confine in the trap unlimited time (if Coulomb collisions and instabilities are neglected): conservation of adiabatic invariant ... More
Presented by Dr. Ivan CHERNOSHTANOV on 19 Nov 2019 at 12:20
Type: Contributed Oral Session: The use of neutron sources based on linear traps and related technologies
Track: The use of neutron sources based on linear traps and related technologies
Results of our studies of the dynamics features of energy release in a hybrid thorium reactor facility with an extended neutron source based on a long magnetic trap are presented in the paper. In the studied configuration of the active zone, a high-temperature plasma column is formed in a pulse-periodic mode, and with certain combinations of the “thermonuclear combustion” pulse duration and du ... More
Presented by Prof. Igor SHAMANIN on 18 Nov 2019 at 17:25
Type: Contributed Oral Session: The use of neutron sources based on linear traps and related technologies
Track: The use of neutron sources based on linear traps and related technologies
To study three-dimensional neutron flux and heat generation fields in a reactor facility with a modified axial region operating in a subcritical mode with thermonuclear neutrons generated by an extended plasma neutron source, a computational model has been developed under utilizing a Serpent-Prizma program code. The studies are conducted for a radially profiled reactor core consisting of areas wi ... More
Presented by Dr. Vladimir SHMAKOV on 18 Nov 2019 at 17:05
Type: Contributed Oral Session: Research activities aimed at magnification an energy efficiency of the ALIANCE
Track: Research activities aimed at magnification an energy efficiency of the ALIANCE project
The formation of high beta plasma by means of neutral beam injection was studied. Energy balance was treated to obtain the scaling of threshold power of the beams required to form high beta equilibrium.
Presented by Dr. Dmitriy SKOVORODIN on 19 Nov 2019 at 12:40