Proceedings of the 19th IEEE/IPSS Symposium on Fusion Engineering. 19th SOFE (Cat. No.02CH37231)
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High power density ion cyclotron antennas for next step device (applications)
- Trang 324-328
Although it is generally recognized that the current IC technology is applicable
to next step devices, the capability of current IC antennas to efficiently
couple power to next step plasma is sometimes questioned. The ITER design effort
has identified requirements for an acceptable performance. ITER-like IC
antennas, fulfilling or possibly exceeding ITER requirements and designed for
long pulse op...
#Cyclotrons #Plasma devices #Radio frequency #Impedance #Loaded antennas #Plasma density #Voltage #Assembly #Plasma applications #Heating
Overview of the TFTR D&D program
- Trang 465-468
The Tokamak Fusion Test Reactor (TFTR) operated for 15 years, from 1982 to 1997.
From November 1993 to April 1997 a mixture of deuterium-tritium (D-T) was used
to fuel experiments, leaving the reactor system in an activated and contaminated
state. In this condition, the removal of the TFTR and its subsystems is greatly
complicated. In 1999, PPPL commenced the TFTR Decontamination and
Decommissioni...
#Hazards #Vacuum systems #Inductors #Tokamaks #Surface contamination #Testing #Decontamination #US Department of Energy #Steel #Pollution measurement
Effects of operating parameters on the beam species of DIII-D neutral beam ion sources
- Trang 40-43
The DIII-D fusion science research facility employs positive-ion based neutral
beam ion sources for plasma heating and current drive experiments. Ion species
produced inside the arc chamber of an ion source determine the composition of
the neutral beams injected into the plasma and in turn affect the energy
deposition along the cross section of the plasma. Arc chamber design and
operation schemes ...
#Ion beams #Ion beam effects #Ion sources #Plasma sources #Particle beams #Arc discharges #Deuterium #Plasma temperature #Nuclear and plasma sciences #Heating
Polymer-derived SiC/sub f//SiC/sub m/ composite fabrication and microwave joining for fusion energy applications
- Trang 426-429
Reports experimental results for the very first batch of products obtained by
joining silicon carbide fiber-reinforced-silicon carbide matrix composites for
fusion applications. The starting point of the work has been to fabricate and
join matched pairs of SiC/sub f//SiC/sub m/ composites. The composites were
joined in a microwave heating environment using preceramic polymer slurry as the
joining ...
#Polymers #Silicon carbide #Thermal stresses #Thermal conductivity #Temperature #Bars #Stress measurement #Conducting materials #Electromagnetic heating #Slurries
Measurement of the energy distribution of fast excited atoms by Doppler shift spectroscopy in an inertial-electrostatic confinement fusion device
- Trang 434-437
Energy distributions of energetic neutral atoms resulted from charge-exchange
reactions between accelerated ions and background atoms or molecules were
measured by the Doppler shift spectroscopy in an inertial-electrostatic
confinement fusion (IECF) device composed of a spherical vacuum chamber as an
anode and a spherical hollow cathode grid concentrically placed in the chamber.
Since ions generat...
#Atomic measurements #Energy measurement #Doppler shift #Spectroscopy #Inertial confinement #Plasma measurements #Cathodes #Hydrogen #Helium #Voltage
Reference scenario for an advanced deuterium power plant system
- Trang 252-255
The proposal is to make large deuterium (D-D) magnetic fusion power plants in
which some (most) of the tritium produced by fusion is removed and stored. This
tritium will ultimately decay to helium-3 that will be recycled to supplement
the helium-3 produced by fusion. Thus the dominant fusion becomes that of
deuterium and helium-3. The level of neutron damage is reduced very
substantially from tha...
#Deuterium #Power generation #Neutrons #Proposals #Production #Plasmas #Recycling #Laboratories #Cyclotrons #Alpha particles
Determination of the CICC joint length by transposition of the cable strands
- Trang 380-383
In an integrated structure low resistance CICC Joint, current is conducted by
outer cable strands coming into touch with the conductive Cu sole. So it is an
important condition for the satisfying joint performance that each strand of the
cable inside the joint is able to come to the outermost of the cable by
transposition. This paper presents analysis, calculation and figures for the
strand transp...
#Spirals #Superconducting cables #Coils #Conductors #Equations #Plasmas #Contracts #Superconductivity #Steel #Wrapping
Safety and environmental considerations in the selection of fusion power plant design options
- Trang 107-110
The neutron shielding provided by in-vessel components of a fusion power plant
has an important influence on the safety and environmental performance. A number
of issues related to the in-vessel shield design have been investigated, with a
focus on waste minimization. Viable concepts have been identified to solve the
conflict between low short-term decay heat and low long-term waste requirements,
...
#Safety #Power generation #Neutrons #Waste management #Waste heat #Coolants #Design optimization #Waste materials #Material storage #Magnetic materials
Selection of plasma-facing materials in next-step fusion devices
- Trang 311-320
Designing a robust interface between a thermonuclear plasma and the solid
material environment remains a major challenge for next-step fusion devices and
future power fusion reactors. Challenging trade-offs in material choice for
plasma-facing components were identified in the internationally co-ordinated R&D
program supporting the Engineering Design Activities of the ITER project. This
paper surv...
#Plasma devices #Plasma materials processing #Fusion reactor design #Plasma applications #Robustness #Solids #Fusion reactors #Research and development #Design engineering #Power engineering and energy
Design of the Quasi-Poloidal Stellarator Experiment (QPS)
- Trang 248-251
The engineering design status of the Quasi-Poloidal Stellarator Experiment (QPS)
is presented. The purpose, configuration, and possible manufacturing and
assembly techniques of the various components of the core are described.
#Coils #Plasma temperature #Laboratories #Physics #Magnetic cores #Toroidal magnetic fields #Heating #Power supplies #Geometry #Copper