A5057967866- Magnetic confinement fusion research
- Superconducting Materials and Applications
- Fusion materials and technologies
- Particle accelerators and beam dynamics
- Metallic Glasses and Amorphous Alloys
- Power System Optimization and Stability
- Nuclear reactor physics and engineering
- Material Dynamics and Properties
- Real-time simulation and control systems
- Glass properties and applications
- Plasma Diagnostics and Applications
- Environmental and Sediment Control
- Nuclear and radioactivity studies
- Silicon Carbide Semiconductor Technologies
- Ruminant Nutrition and Digestive Physiology
- Spacecraft Design and Technology
- Pigment Synthesis and Properties
- Magnetic Properties and Applications
- Advanced Battery Technologies Research
- Rocket and propulsion systems research
- Heat transfer and supercritical fluids
- Electromagnetic Launch and Propulsion Technology
- Power Systems and Technologies
- Combustion and flame dynamics
- Transportation Safety and Impact Analysis
General Atomics (United States)
1992-2011
Oak Ridge National Laboratory
2009
National Science and Technology Council
2006
The Ohio State University
2006
National Institute of Standards
2006
National Institute of Standards and Technology
2006
Martin Marietta Materials (United States)
2003-2005
Lockheed Martin (United States)
2003
Materials Research Center
1981
Drexel University
1977-1980
Special protection schemes are those designed to detect one or more predetermined system conditions that have a high probability of causing unusual stress on the power system, and for which preplanned remedial action is considered necessary. The failure these accurately defined conditions, their carry out required action, can lead very serious costly disturbances. It natural, therefore, concern reliability has been expressed. This paper reports joint IEEE-CIGRE survey determine experience...
Measurements of magnetomechanical coupling, ΔE effect, and relative permeability have been made as a function bias field annealing temperature time in transversely annealed samples Metglas R a) alloy 2605S-2 (Fe78Si9B13), 2605S-3 (Fe79Si5B16), 2826MB (Fe40Ni38Mo4B18). Annealing temperatures times were varied from 300 to 450 °C 15 60 min, respectively. The which generates the largest coupling factor these alloys is less than 1 Oe. From an application point view, this low optimum has distinct...
Modification of the two existing DIII-D neutral beamlines is planned to allow vertical steering provide off-axis beam current drive (NBCD) peaked as far half plasma minor radius. New calculations for a downward-steered indicate strong with good localization so long toroidal magnetic field, B T , and current, I p point in same direction. This due alignment injection (NBI) local pitch field lines. model has been tested experimentally on by injecting equatorially mounted NBs into reduced size...
A description is given of a set models varying accuracy such that the designer/user can trade off between and computation speed to achieve desired performance operator-training simulator. Several new models, obtained by reducing available higher-order are presented. pressurized water reactor model suitable for applications introduced. detailed comparison these provided.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
ABSTRACT LARGE round alfalfa hay bales were harvested using different field and storage procedures. Bale density baling losses decreased as baler feed rate increased. Baling dry matter (DM) average 14, 12, 5 per-cent of windrow yield for single, double, triple win-drows respectively. Total harvesting (including curing, raking, baling) averaged 20 percent swath yield. Storage 3 DM weight stored in-doors 14 outdoors. Nutritive during winter significantly greater in outdoor bales. In-vitro...
Determinations of density, Vickers microhardness, Young’s modulus, and Poisson’s ratio are reported for a series Fe-B glasses, glassy Fe40Ni38Mo4B18, Cu68Zr32. From the last two parameters, one may calculate shear bulk stiffnesses glasses. For stiffness decreases by ∼13% when B concentration from 23 to 15 at.%; simultaneously ∼45%. As result, near-eutectic alloy Fe85B15 (≃111 GPa) is strongly depressed relative that pure crystalline Fe (≃169 Fe3B (≳163 GPa). The ratios Cu68Zr32 (≃4.7)...
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...
Measurements have been made of hydrostatic pressure dependence (up to 4 kbar) the ’’saturation’’ magnetization and Curie temperatures some commercially available Fe-Ni-based metallic glass materials. The magnetizations decrease by a few tenths percent per kbar in amorphous state increase about 1% crystalline form same material. materials degree kbar. From this work, it is possible derive forced volume magnetostriction, moment at 0 °K, effective exchange energy.
ABSTRACT EXPERIMENTS were conducted at the Pennsylvania State University to evaluate application of chemical preservatives high-moisture hay crops. The chemicals used were: acetic acid, propionic propionic-acetic acid mixtures, propionic-formic isobutyric-propionic mixtures and ammonium isobutyrate (AIB). levels ranged from 0.5 2.25 percent wet forage weight. Hay moistures packaging time in 28 35 range. Application locations studied (a) mower conditioner, (b) rake, (c) baler. Evaluations...
DIII-D has four neutral beamlines (NB). Each of these two ion sources, each which injects up to 2.5 MW for 3 s. These intersect the vacuum vessel at an angle 19.5 deg off from radial, enabling current drive in same direction as plasma (co-injection). In 2004, one (210 deg) was rotated provide counter-injection (opposite current). A different beamline (150 been modified have capability off-axis beam drive. The goal injection is center sources aimed a position 40 cm below geometric plasma. To...
The understanding and predictions of spray combustion characteristics are essential to the design liquid hybrid rocket engines. Flow distributions, such as local mixture ratio state propellants products, near injector face have a profound effect on both performance hardware integrity engine. In order provide simple practical analysis, several submodels were developed incorporated into computational fluid dynamics (CFD) code. These include real-fluid property module which is employed account...
The pellet fueling system on DIII-D has been modified for injection of deuterium pellets from two vertical ports and inner wall locations the magnetic high-field side (HFS) tokamak. HFS technique was first employed ASDEX-Upgrade with significant improvements reported in both penetration efficiency. new schemes required installation guide tubes. These lines are /spl ap/12.5 m total Length made up complex bends turns ("roller coaster" like) to route injector plasma, including sections inside...
The acoustic Barkhausen emission (ABE) in two ferromagnetic amorphous alloys, Fe40Ni40P14B6 and Fe78Mo2B20 is investigated. ABE strongly dependent on externally applied stress, thermal annealing treatment. dependence the treatment can be interpreted terms of accompanying structural relaxation. temperature also reported. At Curie point as spontaneous magnetization a single domain approaches zero, reduced to background level. In den beiden amorphen ferromagnetischen Legierungen, und wird die...
Since 1995, DIII-D has performed correction of magnetic field imperfections using a set six external picture frame coils located on the vessel mid-plane. In 2000, these also demonstrated benefits when used for feedback resistive wall mode, an instability that limits plasma performance at high beta. Modeling shown substantial improvements could be achieved by installing new inside and expanding poloidal coverage above below Two prototype internal were installed in 2001 power tested...