Proceedings of the 19th IEEE/IPSS Symposium on Fusion Engineering. 19th SOFE (Cat. No.02CH37231)
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High heat flux tests of carbon composites for KSTAR and NSTX
- Trang 345-347
Uncooled samples of various carbon fiber composites (CFCs), nominally 2.50 cm
square and 1.00 cm in height were exposed in the Electron Beam Test System
(EBTS) to heat fluxes up to /spl sim/100 MW/m/sup 2/ for shots typically of 1.5
s. The heat flux was focused on a square 1 /spl times/ 1 cm at the center of the
sample. For NSTX (National Spherical Torus Experiment), five samples of Allied
Signal ...
#Surface morphology #Aerospace testing #Tokamaks #Temperature #Thermal stresses #Aerospace industry #Electron beams #Surface cracks #Materials testing #Thermal expansion
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
Anode modulator power supplies for continuous duty 500 kW klystrons (TH2103D) & 200 kW gyrotron (VGA8000A19)
- Trang 84-87
Initial testing and commissioning of two high power klystrons (TH2103D) and
gyrotron (VGA8000A19) have been carried out at our Institute. Each of the
klystrons is capable of delivering 500 kW at 3.7 GHz, to be used for
non-inductive lower hybrid current drive (LHCD) in the Steady State
Superconducting Tokamak (SST-1). The gyrotron is capable of delivering 200 KW at
28 GHz, for breakdown and electr...
#Anodes #Power supplies #Klystrons #Gyrotrons #Tokamaks #Cathodes #Voltage #Testing #Steady-state #Electric breakdown
Nghiên cứu và thiết kế thủy nhiệt của các thành phần tiếp xúc plasma (PFC) làm mát bằng nước cho tokamak SST-1 Dịch bởi AI
- Trang 422-425
Các thành phần tiếp xúc plasma (PFC) là một phần quan trọng trong thiết kế của
Tokamak Siêu dẫn Chế độ Bền (SST-1). PFC của SST-1 bao gồm các thiết bị rẽ dòng,
các thiết bị ổn định thụ động, các vách ngăn và các giới hạn, được thiết kế để
tương thích với hoạt động chế độ bền. Điều quan trọng nhất trong thiết kế PFC là
khả năng tản nhiệt ổn định lên tới 1 MW/m/sup 2/. Trong quá trình vận hành ổn
đị...
#Tokamaks #Steady-state #Tiles #Cooling #Surface fitting #Temperature distribution #Thermal loading #Coolants #Plasma temperature #Finite difference methods
Engineering and enabling technology development for heavy ion fusion drivers
- Trang 484-486
The Heavy Ion Fusion Virtual National Laboratory is a collaboration among LBNL,
LLNL, and PPPL. The engineering and technology development activities arc
closely aligned with the major experimental areas, which include injectors, beam
transport, and final focus. High current density ion sources to produce a more
compact multiple beam injector are a major focus of the current activities.
There are ...
#Collaboration #Manufacturing #Pulse compression methods #Magnetic materials #Superconducting magnets #Laboratories #Current density #Ion sources #Insulation #Costs
Towards real time control of the internal transport barriers on JET
- Trang 217-220
Recently a local criterion characterising the emergence and space-time evolution
of internal transport barriers (ITB) has been proposed and extensively validated
on the large JET database. It was shown that a dimensionless local parameter,
/spl rho//spl dot/(T/sub e/) =/spl rho//sub s//L(T/sub e/) characterises with a
low computational cost the typical ITB features such as the emergence time,
loca...
#Hardware #Real time systems #Temperature control #Control systems #Sampling methods #Radiometry #Optical fiber cables #Centralized control #Contracts #Databases
Advanced tokamak scenarios for the FIRE burning plasma experiment
- Trang 301-304
The advanced tokamak capability of the FIRE burning plasma experiment is
examined with 0D systems analysis, equilibrium and ideal MHD stability, RF
current drive analysis, and full discharge dynamic simulations. These analyses
have identified the required parameters for attractive burning AT plasmas, and
indicate that these are feasible with the present progress on existing
experimental tokamaks.
#Tokamaks #Fires #Plasma simulation #Plasma stability #Magnetohydrodynamics #Stability analysis #Radio frequency #Drives #Analytical models #Radiofrequency identification
Progress of the KSTAR tokamak engineering
- Trang 448-453
The KSTAR tokamak is under construction with aim of establishing a scientific
and technological basis for an attractive fusion reactor. The KSTAR tokamak
system consists of a vacuum vessel, magnet systems, in-vessel components, a
cryostat, thermal shields, a vacuum pumping system, and ancillary systems. These
systems are in the final stage of engineering design and prototype manufacturing
with ind...
#Tokamaks #Vacuum systems #Prototypes #Fusion reactor design #Magnetic shielding #Design engineering #Magnetic analysis #Fusion reactors #Manufacturing industries #Performance analysis
Advances in tungsten-armored plasma facing components
- Trang 364-367
High-Z armor is appropriate for use on plasma facing components (pfcs) subjected
to very high heat loads and low plasma edge temperatures. During the past
several years much progress was made on the development of tungsten rod armor
bonded to water-cooled heatsinks. These pfcs can endure heat fluxes near 25
MW/m/sup 2/ typical of high density burning plasmas without thermal stress
cracking, meltin...
#Plasma temperature #Tungsten #Plasma density #Heat sinks #Plasma welding #Copper #Thermal stresses #Fires #Plasma materials processing #Electron beams
Results of 10-Joule wire-burn test performed on 70 kV rail-gap crowbar protection system for high power klystrons and gyrotron
- Trang 91-94
Pulsed and continuous high power microwave tubes need to be protected against
arc faults within the tube. If the energy dumped in such arc fault is more than
the critical crater energy of the tube, irreparable damage can occur. Modern
switch mode powers supplies (SMPS) that are generally opted for the new systems
store little energy and are capable of switching HV in few microseconds. So they
do n...
#System testing #Performance evaluation #Power system protection #Klystrons #Gyrotrons #Switched-mode power supply #Electromagnetic heating #Switches #Power system reliability #Feeds