A5024742168- Superconducting Materials and Applications
- Magnetic confinement fusion research
- Particle accelerators and beam dynamics
- Fusion materials and technologies
- Spacecraft and Cryogenic Technologies
- Particle Accelerators and Free-Electron Lasers
- HVDC Systems and Fault Protection
- Heat Transfer and Boiling Studies
- Nuclear Physics and Applications
- Refrigeration and Air Conditioning Technologies
- Frequency Control in Power Systems
- Advanced MEMS and NEMS Technologies
- Astronomical Observations and Instrumentation
- Advanced Thermodynamic Systems and Engines
- High-Voltage Power Transmission Systems
- Electronic Packaging and Soldering Technologies
- Graphite, nuclear technology, radiation studies
- Physics of Superconductivity and Magnetism
- Laser-Plasma Interactions and Diagnostics
Star Technology and Research (United States)
2000-2009
General Atomics (United States)
1989-2003
South Texas Accelerated Research Therapeutics
1996
A 15 kV class high temperature superconducting fault current limiter was developed as part of a Department Energy Superconductivity Partnership Initiative (SPI) Phase II effort. This is an inductive/electronic (FCL) that can double fast sub-cycle solid state breaker. The said device shipped to Southern California Edison (SCE) Center Substation at Norwalk, CA from General Atomics on June 15, 1999. Preliminary voltage and testing conducted. pre-commercial FCL unit houses three the world's...
A particle exhaust scheme using a cryocondensation pump in the advanced divertor configuration of DIII-D tokamak is described. In this configuration, located inside baffle chamber within tokamak, designed to receive particles reflected off strike region. concentric coaxial loop with forced-convection flow two-phase helium selected as surface. The pumping optimized by Monte Carlo techniques provide maximum efficiency while minimizing deleterious effects impingement energetic plasma on...
Two superconducting magnets, mounted on a rocket sled are propelled by solid fuel motors. During motion, the field from magnets interacts with passive copper rails embedded in concrete guideway to produce levitation and flight stability. Six tests have been successfully conducted date most recent April 2008 reaching 673 kilometer per hour. The consist of racetrack coils, which wet lay-up wound rectangular NbTi wire. They were tested 245 A peak 7.5 T winding current density 38 kA/cm <sup...
General Atomics (GA) is fabricating seven ITER Central Solenoid Modules (CSM) for the Organization (IO). As part of fabrication process, all CSMs undergo factory acceptance testing (FAT) prior to shipment IO. The FAT includes charging modules 40 kA and performing fast discharges (7.3 second decay time constant) measure alternating current (AC) losses. These generate high voltages at electrical connections between CSM test facility. Due a discharge fault during 3 FAT, Paschenization methods...
The ITER Central Solenoid is under fabrication by the U.S. organization and its subcontractors. will supply seven modules to IO, six of which be assembled in a stack that forms Solenoid. first were built GA at their facility, went into high voltage testing, including Paschen testing vacuum, then they tested 4.5 K up 40 kA demonstrate compliance coil with requirements. In this article, we present Test Plan results central solenoid (CS) module's performance, especially full current. We...
The ITER Central Solenoid is under fabrication by the US organization and its subcontractors. will supply seven modules to IO, six of which be assembled in a stack that forms (CS). All CS were or tested at 40 kA Final Test facility General Atomics, Poway, CA. Testing included high voltage, as well Paschen testing vacuum global leak tests before after cooldown 4.5 K EM cycling kA. In paper we present results Module 4 performance, modifications test improve reliability instrumentation. We...
General Atomics (GA) is under contract to UT-Battelle c/o Oak Ridge National Laboratory for the fabrication of ITER Central Solenoid Modules (CSM). GA will provide seven modules Organization (IO), six which be assembled in a stack that forms Solenoid. All CSMs are required pass factory acceptance testing (FAT) at Atomics' Magnet Technology Center (MTC) test facility prior shipment IO. Currently, 1, 2, and 4 have completed FAT been delivered CSM5 has CSM3 repeat after resuming its campaign....
Three large high temperature superconducting coils were used in the 15 kV class fault current limiter (FCL), designed and fabricated as part of a Phase II US DoE Superconductivity Partnership Program. Each these solenoids measures 1.0 m diameter 0.75 long. coil is to carry 2000 Adc withstand an AC ripple 16 A at 120 Hz. wound from km Bi-2223 silver tapes has inductance 4 mH. These co-designed by General Atomics (GA) Intermagnetics Corporation (IGC) constructed latter. GA provided cryogenics...
The neutral beam system installed on the DIII-D tokamak uses eight 80-kV long pulse sources (LASs) mounted four beamlines and was originally designed to deliver a nominal 12 MW of H/sup 0/ power plasma for pulses up 5-s duration. Essentially, all source components are common design, making version conservative in its rated parameters. A neutron shield has recently been constructed around torus hall, allowing D/sup injection become routine. Because deuterium beams have better neutralization...
The design of the cryogenic system for DIII-D advanced divertor cryocondensation pump is presented. incorporates a baffle chamber and bias ring located near bottom vacuum vessel. A 50000-l/s will be installed underneath plasma particle exhaust. consists liquid-helium-cooled tube operating at 4.3 K liquid-nitrogen-cooled radiation shield. Liquid helium fed by forced flow through cryopump. Compressed gas flowing high-pressure side heat exchanger regeneratively cooled two-phase leaving pump....
General Atomics has commissioned the final test facility at central solenoid module (CSM) manufacturing site in Poway, CA, USA. The includes a number of critical subsystems including feeder system (FS), supplied by Institute Plasma Physics Chinese Academy Science (ASIPP), that connects chamber to cryogenic and electrical systems. It coil termination box, high-temperature superconducting current leads, duct. FS carries (50 kA) supercritical helium (4.5 K, 5.5 bara) CSM its supporting...
The Doublet III neutral beam injector system is based on three beamlines; each beamline employs two 80 kV/80 A hydrogen ion sources. Two liquid helium (LHe) cooled cryopanel arrays were designed as an integral part of the in order to provide high differential pumping gas along beamline. consist a front (nearer torus) disk panel (3 m2 side) with nitrogen (LN2) chevrons and rear cylindrical modified Santeler panels (8 m2) which also LN2 surfaces shielding LHe surfaces. These cryopanels are...
The ITER Central Solenoid (CS) modules are under fabrication by the US organization and its subcontractors. will supply seven to Organization (IO), six of which be assembled in a stack that forms Solenoid, last one being spare. first module, namely CSM 1 was manufactured General Atomics (GA) went through Factory Acceptance Tests (FAT) including high voltage testing, Paschen testing then cold test at 4.5 K up 40.0 kA order demonstrate compliance with coil performance requirements. paper...
The ITER Central Solenoid Modules (CSM) are being fabricated at General Atomics (GA) their Magnet Technologies Center in Poway, CA. Each of the seven modules will undergo final testing GA facility to demonstrate performance 48.5 kA, 11 T, and 4.5 K. In order perform tests on multiple modules, a demountable coaxial joint using indium wires was developed connect feeders. Two full scale joints were establish assembly technique preliminarily tested (up 3 kA) CSM qualification coil (Cu...