Award Data

A NEW TECHNIQUE, PULSED ELECTRON BEAM (PEB) JOINING, WILL BE APPLIED TO THE PROBLEM OF JOINING, LOW-LOSS CERAMIC MATERIALS USED FOR WINDOWS IN HIGH FREQUENCY MICROWAVE DEVICES TO THE METAL VACUUM ENVELOPE OF THE MICROWAVE DEVICE. THE PEB TECHNIQUE ALLOWS SELECTIVE HEATING OF THE SPECIMEN TO BE JOINED THROUGH PREFERENTIAL ENERGY DEPOSITION THAT IS CONTROLLED BY A COMBINATION OF THE ELECTRON BEAM P ...

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THIS PROJECT IS AIMED AT THE DEVELOPMENT OF A NEW GENERATION OF ROTARY BLOWOUT PREVENTERS CAPABLE OF SAFE, RELIABLE, AND COST EFFECTIVE HANDLING OF THE HIGH PRESSURES EXPECTED IN UNDERBALANCED HORIZONTAL AND DIRECTIONAL DRILLING APPLICATIONS. PRESSURES OF UP TO 5,000 PSI (OR EVEN HIGHER) CAN BE EXPECTED WHEN DRILLING WITH AIR, FOAM, OR NITRIFIED MUD IN THE LOW PERMEABILITY FORMATIONS IN THE U.S. ...

A NEAR LINEAR ACCELERATOR (LINAC) STRUCTURE WILL BE IDENTIFIED AND INVESTIGATED IN PHASE I AS A POSSIBLE EXTENSION TO THE FAMILY OF STRUCTURES NOW USED FOR ACCELERATION OF CHARGED PARTICLE BEAMS. A CANDIDATE STRUCTURE HAS BEEN IDENTIFIED; OTHERS MAY BE IDENTIFIED IN THE COURSE OF THE INVESTIGATION. THE IDENTIFIED STRUCTURE UTILIZES A FOUR-FINGERED GEOMETRY TO PRODUCE RADIO FREQUENCY (RF) ELECTRI ...

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THE NATION DESIRES TO EXPAND THE USE OF CLEAN BURNING, COMPETITIVELY PRICED NATURAL GAS. THE INCREASED DEMAND FOR NATURAL GAS HAS PROMPTED NEW DRILLING IN ESTABLISHED GAS FIELDS. THE PROPER PLACEMENT OF THE NEW WELLS IS DEPENDENT ON THE GAS FORMATION PROPERTIES BETWEEN THE EXISTING WELLS. ONE OF THE PROPERTIES IS THE THICKNESS OF THE GAS BEARING ZONE. IT IS GENERALLY ACCEPTED THAT THE FORMATIO ...

THIS PROJECT WILL ASSESS THE FEASIBILITY OF USING MULTIMEDIA-AUGMENTED SOFWEARE TUTORIALS TO SUPPORT TEACHING THE PRINCIPLES OF EXPERIMENTAL NUCLEAR PHYSICS. THE DETECTOR SYSTEM FOR THE PHOTON TAGGING FACILITY AT THE CONTINUOUS ELECTRON BEAM ACCELERATOR FACILITY (CEBAF) IN NEWPORT NEWS, VIRGINIA IS NOW UNDER CONSTRUCTION AT THE NUCLEAR DETECTOR LABORATORY OF THE CENTER FOR NUCLEAR STUDIES OF THE ...

GAS TRANSMISSION PIPELINES REQUIRE NATURAL GAS DELIVERED TO THEM TO MEET A HYDROCARBON (HC) DEWPOINT SPECIFICATION IN ORDER THAT THE HC LIQUIDS ARE NOT DROPPED OUT IN THE LINE DURING TRANSMISSION. SIMILAR SPECIFICATIONS ARE IMPOSED BY PLANT OPERATORS ON THE FUEL GAS THAT IS CONSUMED BY THEIR MACHINERY. A MARKET EXISTS FOR AN ECONOMICAL AMMONIA (NH3) ABSORPTION UNIT TO REPLACE COMPRESSION UNITS U ...

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TRADITIONALLY, SUPE2RCONDUCTING CAVITIES FOR LARGE ELECTRON POSITION COLLIDERS ARE FABRICATED FROM HIGH PURITY NIOBIUM (NB) SHEETS USING LATHE SPINNING AND WELDING. THESE CAVITIES SUFFER FROM THE PROBLEM OF THERMOMAGNETIC BREAKDOWN RESULTING FROM THE RELATIVELY POOR THERMAL CONDUCTIVITY OF NB AT LIQUID HELIUM TEMPERATURES. A MORE ELEGANT AND LOW COST SOLUTION TO THE BREAKDOWN PROBLEMS IS THE USE ...