A5109887292- Magnetic confinement fusion research
- Fusion materials and technologies
- Superconducting Materials and Applications
- Particle accelerators and beam dynamics
- Laser-Plasma Interactions and Diagnostics
- Physics of Superconductivity and Magnetism
- Nuclear Materials and Properties
- Muon and positron interactions and applications
- Nuclear Physics and Applications
- HVDC Systems and Fault Protection
- Electromagnetic Launch and Propulsion Technology
- Advanced Chemical Physics Studies
- Nuclear reactor physics and engineering
- Quantum, superfluid, helium dynamics
- Ionosphere and magnetosphere dynamics
- Hydrogen Storage and Materials
- Ammonia Synthesis and Nitrogen Reduction
- Hybrid Renewable Energy Systems
- Gas Dynamics and Kinetic Theory
- Energetic Materials and Combustion
- Plasma Diagnostics and Applications
- Laser-induced spectroscopy and plasma
- Rocket and propulsion systems research
- Laser Design and Applications
- Mechanical and Thermal Properties Analysis
Allogene Therapeutics (United States)
2025
Oak Ridge National Laboratory
2000-2023
Princeton University
2003
Martin Marietta Materials (United States)
1987
United States Department of Energy
1987
The University of Western Australia
1956
Recent experimental results in the Large Helical Device have indicated that a large pressure gradient can be formed beyond stability criterion for Mercier (high-n) mode. While against an interchange mode is violated inward-shifted configuration due to enhancement of magnetic hill, neoclassical transport and confinement high-energy particle are, contrast, improved by this inward shift. Mitigation unfavourable effects MHD instability has led significant extension operational regime....
A disruption mitigation system (DMS) is under design for ITER to inject sufficient material deeply into the plasma rapid thermal shutdown and collisional suppression of any resulting runaway electrons. Progress on development both a shattered pellet injector (SPI) that produces large solid cryogenic pellets provide reliable deep penetration fast opening high flow rate gas valve massive injection (MGI) presented. Cryogenic deuterium neon up 25 mm in size have been formed accelerated with...
Purpose Off-the-shelf, allogeneic CD19 chimeric antigen receptor (CAR) T cell products may improve access to treatment versus autologous ones. We report the phase 1 experience of CAR T-cell product cemacabtagene ansegedleucel (cema-cel) and its predecessor, ALLO-501, in T-naive patients with relapsed/refractory large B-cell lymphoma (R/R LBCL). Patients Methods In ALPHA2/ALPHA studies, safety efficacy cells were evaluated treatment-naive R/R LBCL. received healthy donor-derived, human...
Southwire Company has installed, tested and is operating the first real-world application of a high-temperature superconducting cable system at its headquarters in Carrollton, GA, USA. The powering three manufacturing plants, marking time company successfully made difficult transition front laboratory to practical field an HTS cable. cables are rated 12.4-kV, 1250-A, 60 Hz cooled with pressurized liquid nitrogen temperatures from 70-80 K. Before placing into service, extensive offline...
Pellet injection has been used as a primary fuelling scheme in the Large Helical Device. With pellet injection, operational region of NBI plasmas extended to higher densities while maintaining favourable dependence energy confinement on density, and several important values, such plasma stored 0.88 MJ, time 0.3 s, β 2.4% at 1.3 T density 1.1 × 1020 m -3, have achieved. These parameters cannot be attained by gas puffing. Ablation subsequent behaviour investigated. The measured penetration...
During the first two years of LHD experiment following results have been achieved: (i) higher Te (Te(0) = 4.4 keV at ⟨ne⟩ 5.3 × 1018 m-3 and Pabs 1.8 MW); (ii) confinement (τE 0.3 s, Te(0) 1.1 6.5 1019 2.0 (iii) stored energy, Wpdia 880 kJ B 2.75 T. High performance plasmas realized in inward shifted magnetic axis configuration (R 3.6 m) where helical symmetry is recovered particle orbit properties are improved by a trade-off MHD stability due to appearance hill. Energy was systematically...
The Ultera/ORNL team have built and tested 3-m 5-m triaxial cables rated at 3 1.3 kA-rms, respectively. three concentric superconducting phases are made of BSCCO-2223 HTS tapes, separated by layers cold-dielectric tapes. A copper braid is added as the grounding shield on outside active phases. Tests these were performed temperatures ranging from 70 to 84 K. AC loss data reconfirmed previous result a 1.5-m prototype cable that total 3-phase ac about sum calculated losses These other test...
A theory which takes into account both dispersion and electrostatic energies (ion–dipole, ion–induced-dipole, etc.) has been developed to calculate Henry's constant for sorption of gases in molecular sieves. The Lennard-Jones Devonshire (LJD) liquids is modified the contribution due energies. energy forces calculated by a direct summation. Comparison with experimental data shows that non-polar adsorbate molecules are same order magnitude.
Encouraged by the positive test results of a /spl sim/1.5-m long prototype tri-axial cable, Southwire Company/Oak Ridge National Laboratory (ORNL) team has conceived, designed, and built 5-m cable with three-phase terminations. The three concentric superconducting phases are made BSCCO-2223 high-temperature (HTS) tapes, separated layers cold-dielectric (CD) tape. A copper braid is added as grounding shield. completed enclosed in flexible cryostat. Cooling terminations achieved liquid...
The Oak Ridge National Laboratory (ORNL) and the Southwire Company have used ORNL 5 m cable test facility to develop high-temperature superconducting (HTS) cables terminations support first industrial demonstration of an HTS at manufacturing complex. Two m, cold dielectric been tested for direct current (DC) voltage, alternating (AC) losses, AC withstand 18 kV, thermal-hydraulic performance, heat load, long-term operation rated voltage (7.2 kV) (1250 A). separate termination concepts, one...
Injection of solid tritium pellets is considered to be the most promising way fueling fusion reactors. The Tritium Proof-of-Principle experiment has demonstrated feasibility forming and accelerating pellets. This injector based on pneumatic pipe-gun concept, in which are formed situ barrel accelerated with high-pressure gas. ideal for service because there no moving parts inside gun excess required pellet production process. Removal 3He from prevent blocking cryopumping action by...
An eight-shot pneumatic pellet injection system has been developed for plasma fueling of the tokamak fusion test reactor (TFTR). The active cryogenic mechanisms consist a solid hydrogen extruder and rotating wheel that are cooled by flowing liquid-helium refrigerant. provides stepwise loading eight holes located circumferentially around wheel. This design allows three different diameters: 3.0 mm (three pellets), 3.5 4.0 (two pellets) in present configuration. Each pellets can be shot...
The Tritium Proof-of-Principle (TPOP) pellet injector was designed and built by Oak Ridge National Laboratory (ORNL) to evaluate the production acceleration of tritium pellets for fueling future fusion reactors. uses pipe-gun concept form directly in a short liquid-helium-cooled section barrel. Pellets are accelerated using high-pressure hydrogen supplied from fast solenoid valve. A versatile, tritium-compatible gas-handling system provides all functions needed operate gun, including feed...
Performance of single-stage pneumatic pellet injectors is compared with several models for one-dimensional, compressible fluid flow. Agreement quite good that reflect actual breech chamber geometry and incorporate nonideal effects such as gas friction. Several methods improving the performance to muzzle velocities ranging from 2 2.25 km/s in near term are outlined. Two-stage have potential much higher (4–6 km/s) because pressures temperatures achievable second-stage compression. The design...
Tokamak plasma disruptions present a significant challenge to ITER as they can result in intense heat flux, large forces from halo and eddy currents, potential first-wall damage the generation of multi-MeV runaway electrons. Massive gas injection (MGI) high Z material using fast acting valves is being explored on existing tokamaks planned for method evenly distribute thermal load prevent melting, control rate current decay minimize mechanical loads, suppress A valve accompanying power supply...
A compact pellet injection system that was recently developed at the Oak Ridge National Laboratory has been installed on Madison Symmetric Torus (MST) University of Wisconsin and used in initial plasma fueling experiments. The system, referred to as a “pellet injector suitcase,” is pipe gun device with four-barrel capability (presently equipped two 1.0-mm-bore barrels), it uses cryogenic refrigerator for in-situ hydrogen formation (typically, D2 pellets). This new, portable, stand-alone...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal conductivity of iron-titanium powdersTe Hua Lin, Jack S. Watson, and Paul W. FisherCite this: J. Chem. Eng. Data 1985, 30, 4, 369–372Publication Date (Print):October 1, 1985Publication History Published online1 May 2002Published inissue 1 October 1985https://pubs.acs.org/doi/10.1021/je00042a001https://doi.org/10.1021/je00042a001research-articleACS PublicationsRequest reuse permissionsArticle Views211Altmetric-Citations7LEARN ABOUT THESE...
Helium pumping speeds measured for the Excalibur model CVR 1106 cryosorption pump fall into two regimes depending on feed rate. At rates below 6.2×10−6 Torr l s−1 cm−2, decrease with loading from 2.2 cm−2 to 0.3 cm−2. higher than speed varies periodically loading. A typical cycle begins near 1.7 cm−2; decline this value about 0.6 at which time goes through a rapid transition that reverts it back its original high speed. During transition, system reaches presures greater 10−2 Torr, and...