Award Data

THE OBJECTIVE OF THE PROPOSED PROJECT IS TO FABRICATE AND MEASURE THE PERFORMANCE OF TWO NOVEL DESIGNS FOR REGENERATIVE HEAT EXCHANGERS APPLICABLE TO VARIOUS TYPES OF CRYOCOOLERS, SUCH AS STIRLING AND GIFFORD MCMAHON REFRIGERATORS. THE REGENERATORS PRESENTLY USED ARE LIMITED TO TWO TYPES, AND BASICALLY TWO MATERIALS, DUE TO FABRICATION CONSTRAINTS. THEY ARE RATHER COSTLY, LABOR INTENSIVE, SUBJECT ...

A FREE FALL WATER SAMPLER BASED ON THE CHOPSTICK WATER SAMPLER BAG WILL BE DEVELOPED. THIS PORCUPINE SAMPLER WILL BE CAPABLE OF TAKING UP TO 36 THREE LITER WATER SAMPLES AT DEPTHS CONTROLLED FROM THE SURFACE, OR AT DEPTHS DETERMINED BY AN INTERNAL CONTROLLER. THE SAMPLE WILL BE OPTIMIZED FORMINIMUM TRAVEL TIME FROM THE SURFACE TO THE BOTTOM AND BACK SO THAT THE CURRENT FOUR HOUR ON STATION TIME FO ...

PLASTIC SCINTILLATING OPTICAL FIBERS (PSF) WILL PLAY A MAJORROLE AS RADIATION DETECTORS IN THE GIANT RESEARCH DEVICES ENVISIONED FOR THE SUPERCONDUCTING SUPER COLLIDER (SSC) AND FOR OTHER SIMILAR DEVICES PLANNED ABROAD. THIS PROJECT IS CONCERNED WITH ESTABLISHING A DOMESTIC COMMERCIAL SOURCE OF THIS NEW GENERATION DETECTION MEDIUM NEEDED FOR THE ADVANCEDPARTICLE PHYSICS RESEARCH TO BE CONDUCTED AT ...

RADIO FREQUENCY VACUUM WINDOWS COOLED WITH LIQUID HELIUM WILL BE DEVELOPED IN THIS PROJECT. SINGLE CRYSTAL SAPPHIRE WILL BE USED FOR THE DIELECTRIC BARRIER MATERIAL. A COMPRESSIVE SEAL TECHNIQUE WILL BE USED TO FORM THE VACUUM JOINT BETWEEN THE SAPPHIRE AND CONDUCTORS THAT MAKE UP THE WINDOW ASSEMBLY. THIS TECHNIQUE HAS BEEN USED SUCCESSFULLY FOR ROOM TEMPERATURE VACUUM SEALS. IN PHASE I THE SEAL ...

THERE IS INCREASING INTEREST WITHIN THE HIGH ENERGY PHYSICS COMMUNITY IN INVESTIGATING ELECTRON INTERACTION PHENOMENA ATENERGIES NEAR 1 TEV. A LINEAR COLLIDER, HAVING A DESIGN BASED ON THE RELATIVISTIC KLYSTRON TWO-BEAM ACCELERATOR (RK/TBA) DESCRIBED BY SESSLER AND YU, OFFERS A PARTICULARLY ATTRACTIVE APPROACH TO ACHIEVING SUCH ENERGIES. IN THIS APPROACH, HIGH ENERGY, LOW CURRENT ELECTRON BEAMS AR ...

THE FASTBUS SYSTEM SPECIFICATION FOR HIGH ENERGY PHYSICS ANDOTHER DATA-SYSTEM APPLICATIONS ANTICIPATES THE USE OF MULTIPLE, HIGH PERFORMANCE PROCESSOR MODULES FOR DATA CONTROL AND EVENT REDUCTION ASSOCIATED WITH EXPERIMENTS IN THE PHYSICAL SCIENCES. EXISTING PROCESSOR DESIGNS WILL BE UNABLE TO COPE WITH THE PROJECTED DATA-REDUCTION AND EVENT-HANDLING REQUIREMENTS OF THE COMPLEX EXPERIMENTS PLANNED ...

ONE OF THE MANY WAYS OF USING COAL AS A FUEL FOR GENERATING ELECTRIC POWER IS TO PULVERIZE IT INTO A VERY FINE SIZE (2-20 MICRONS) AND MIX IT WITH A LIQUID CARRIER SUCH AS WATER. THE RESULTING SLURRY CAN BE TRANSPORTED THROUGH A PIPELINE AND INJECTED DIRECTLY INTO A BOILER FOR COMBUSTION. PULVERIZING COAL INTO A FINE POWDER LEADS TO GREATER ASH REJECTION LEVELS AND THEREFORE TO CLEANER COAL. THIS ...

LANDFILL GAS (LFG), COMPRISED OF METHANE (CH4) AND CARBON DIOXIDE (CO2) IN ROUGHLY EQUAL PROPORTIONS ALONG WITH MYRIAD TRACE CONTAMINANTS, IS NOW ESSENTIALLY A WASTED RESOURCE THAT COULD PROVIDE LOCALLY SIGNIFICANT SUPPLEMENTALENERGY. LFG HAS BOTH EXPLOSIVE AND TOXIC PROPERTIES THAT MUST BE MITIGATED AT THE LANDFILL SITE; CONSEQUENTLY MOST INSTALLED LFG TECHNOLOGY IS CONTROL ORIENTED AND ADDRESSES ...

N/A

THE ULTIMATE GOAL OF THE PHASE I AND PHASE II EFFORTS OF THIS PROJECT IS TO DEVELOP A FAST O(NLOGN) OR O(N) COMPUTATIONAL METHOD FOR THE TREATMENT OF A THREE-DIMENSIONAL, UNSTEADY, REACTIVE FLOW ON A CONCURRENT COMPUTER. IN THE PHASE I FEASIBILITY STUDY, A ROBUST O(N(4/3)) THREE-DIMENSIONAL VORTEX PARTICLE METHOD IS BEING DEVELOPED. THIS METHOD, BASED ON THE PROPER TREATMENT OF THE NEAR- AND FAR-F ...