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79
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120-keV Neutral-Beam Injection System Development
The neutral-beam injection systems for the next generation of U. S. fusion experiments (TFTR, MX, Doublet III) have requirements that considerably exceed the present state of development. TFTR, for example, desires 20 MW of 120-keV deuterium atoms in pulses of 0.5-sec duration. The neutral-beam systems needed to meet these demands will be large and complex and will require much development effort. In order to develop components for these new systems, a new, large test facility was constructed. The vacuum system, which has a volume in excess of 170,000 liters, will handle the pulsed gas loads by volume expansion; the gas will be pumped out in the one-minute intervals between pulses. The power-supply philosophy and specification are discussed in an accompanying paper. A mini-computer system will be used to monitor and control the power supplies and to diagnose the beam. Of the beam-line components, a plasma source and 120-kV accelerator structure which are under construction are discussed. A new long-pulse version of our 15-cm-diam high-current plasma source has been developed. Significant improvements have been made by re-orienting the filaments, so that they produce closed magnetic field lines near the wall, and by changing the shape and position of the anode. This …
Date:
February 1, 1976
Creator:
Ehlers, K. W.; Berkner, K. H.; Cooper, W. S.; Haughian, J. M.; Kunkel, W. B.; Prichard, B. A., (Jr.) et al.
Object Type:
Article
System:
The UNT Digital Library
Abilene Philharmonic Playbill: February 24, 1976
Program for an Abilene Philharmonic concert that ran on February 24th during the 26th season. It includes information about the pieces performed, artists and musicians, and advertising from local companies.
Date:
February 1976
Creator:
Abilene Philharmonic
Object Type:
Pamphlet
System:
The Portal to Texas History
Absolute differential cross sections over the entire angular range for the reaction /sup 3/H(d,n)/sup 4/He at 7. 0 and 10. 0 MeV
Differential cross sections for the reaction /sup 3/H(d,n)/sup 4/He have been measured at 7.00 and 10.00 MeV using the time-of-flight technique. By measuring both /sup 3/H(d,n)/sup 4/He and /sup 2/H(t,n)/sup 4/He at the same center of mass, energy-complete distributions between 0/sup 0/ and 180/sup 0/ have been obtained. The absolute scales have been established within +- 1.5 percent by using the accurate /sup 2/H(t,/sup 4/He)n cross sections at 20.0 MeV as a standard.
Date:
February 1, 1976
Creator:
Drosg, M.; Smith, R. K. & Woods, R.
Object Type:
Report
System:
The UNT Digital Library
Acceleration experienced by thermal converter implanted in calves. [Acceleration from walking, falling, and jumping]
The objective of this study was to determine acceleration levels experienced by the ERDA thermal converter unit implanted abdominally in a calf. A full-scale weighted mock-up of the thermal converter was fabricated containing a triaxial accelerometer. The mock-up was implanted in calf cadavers which were subjected to falls from an operating table. Highest acceleration recorded was 34 g. The mock-up was implanted in living animals and acceleration measurements made under various maneuvers including walking, standing from a laying position, walking up and down stairs, jumping, and falling from a standing position. Maximum acceleration recorded was 8 g and occurred in the falling maneuver.
Date:
February 1, 1976
Creator:
Koshino, I.; Sukalac, R.; Jacobs, G.; Kiraly, R. J. & Nose, Y.
Object Type:
Report
System:
The UNT Digital Library
ACTVE News, Volume 7, Number 2, February 1976
Newsletter issued by the Advisory Council for Technical-Vocational Education in Texas discussing news, events, and other relevant information related to technical and vocational education for adults in Texas.
Date:
February 1976
Creator:
Advisory Council for Technical-Vocational Education in Texas
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
The Altus Times-Democrat (Altus, Okla.), Vol. 50, No. 27, Ed. 1 Sunday, February 1, 1976
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 1, 1976
Creator:
Gilmore, Robert K. & Hart, Sandra
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Sun (Alvin, Tex.), Vol. 86, No. 50, Ed. 1 Sunday, February 1, 1976
Semiweekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
February 1, 1976
Creator:
Bowen, A. E.
Object Type:
Newspaper
System:
The Portal to Texas History
America Joins a Metric World
Pamphlet issued by the United States National Bureau of Standards discussing the Metric Conversion Act of 1975, the work of the U.S. Metric Board, and how government agencies are facilitating a switch to the metric system.
Date:
February 1976
Creator:
United States. National Bureau of Standards.
Object Type:
Pamphlet
System:
The UNT Digital Library
[American University Commencement Address, February 1st, 1976]
Text containing a typed speech that discusses the United States Constitution as well as violations by government organizations. Notes are handwritten between paragraphs.
Date:
1976-02~
Creator:
Jordan, Barbara, 1936-1996
Object Type:
Text
System:
The Portal to Texas History
[American University Commencement Address, February 1st, 1976]
Text containing a typed speech that discusses the United States Constitution as well as violations by government organizations. Notes are handwritten between paragraphs.
Date:
1976-02~
Creator:
Jordan, Barbara, 1936-1996
Object Type:
Text
System:
The Portal to Texas History
[American University Commencement Address, February 1st, 1976]
Text containing a typed speech that discusses the United States Constitution as well as violations by government organizations.
Date:
1976-02~
Creator:
Jordan, Barbara, 1936-1996
Object Type:
Text
System:
The Portal to Texas History
Analysis of GCFBR transients without scram
The analyses of four transients imposed on a Gas Cooled Fast Breeder Reactor (GCFBR) plant are presented. These calculations were carried out using the HELAP code, which is based on RELAP 3B. The transient imposed on the system is a design basis depressurization accident (DBDA) with no scram. Furthermore, the rupture size causing the depressurization was varied over a range from .6 ft/sup 2/ to zero. In the limit of no rupture the transient imposed on the system is due only to the transient behavior of the steam generator and circulator turbine during a DBDA. The following observations can be made, based on this work: (1) The time to clad failure as determined in this work is much shorter than in the previously published preliminary work. (2) In the case of no rupture, the agreement between the current analysis and the previously carried out analysis is better. (3) In the case of smaller rupture sizes the superheater tube wall is subject to rapidly rising temperatures and pressures. The latter rise would be strongly affected by the capacity of the safety and relief valves. These temperatures and pressure transients should be evaluated with the tube wall strength in mind, since a …
Date:
February 1, 1976
Creator:
Ludewig, H
Object Type:
Report
System:
The UNT Digital Library
Analytical Chemistry Division annual progress report for period ending November 30, 1975
Separate abstracts were prepared for each of the six sections on analytical research and development. Service analyses, activities related to education, supplementary professional activities, and means of presentation of research results are also discussed. (JGB)
Date:
February 1, 1976
Creator:
Lyon, W. S. (comp. and ed.)
Object Type:
Report
System:
The UNT Digital Library
Analytical Investigation of Certain Aspects of LMFBR Subassembly-Failure Propagation
An analytical investigation of certain problems in the area of subassembly-to-subassembly failure propagation in LMFBR's is described. Existing analyses of the response of the adjacent subassembly duct to mechanical loads are reviewed and summarized, and major uncertainties are identified. Additional analyses of the response of the adjacent subassembly to certain thermal loads are presented in two parts. In the first part, the effect of an external heat flux on duct melting and thermal stresses is considered. The external heat fluxes required to produce duct melting or excessive thermal stresses are compared with the heat fluxes that might be expected from the molten fuel deposited on the duct wall. In the second part, a thermal-hydraulic study is performed to investigate the effect of the external heat flux on the coolant temperature distribution in the adjacent subassembly. Both normal subassembly geometry and distorted subassembly geometry are considered. A detailed model of the coolant region formed by the heated duct wall and the displaced fuel pins is also analyzed to determine whether there are severe temperature gradients.
Date:
February 1976
Creator:
Marr, William W.; Wang, P. Y.; Misra, B.; Padilla, A. & Crawford, R. M.
Object Type:
Report
System:
The UNT Digital Library
Analytical Study of the Ogallala Aquifer in Hale County, Texas: Projections of Saturated Thickness, Volume of Water in Storage, Pumpage Rates, Pumping Lifts, and Well Yields
Analytical study of the Ogallala Aquifer in Lamb County, Texas detailing the geology and hydrology of the aquifer, and discussing the potential yield from the aquifer.
Date:
February 1976
Creator:
Wyatt, A. Wayne; Bell, Ann E. & Morrison, Shelly
Object Type:
Report
System:
The Portal to Texas History
Annotated Bibliography of Texas Water Resources Reports of the Texas Water Development Board and United States Geological Survey Through August 1974
Report presents basic hydrologic investigation and studies related to the development of water resources in Texas and the resulting basic data and interpretive reports written by Texas Water Development Board and the U.S Geological Survey.
Date:
February 1976
Creator:
Friebele, Charlotte D. & Wolff, Herbert A.
Object Type:
Report
System:
The Portal to Texas History
Annual progress report, July 1974--June 1975
The work done, primarily in various aspects of U and Pu determinations, was reported in individual reports on each project. Separate abstracts were prepared. (JSR)
Date:
February 1, 1976
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Application of transmission electron microscopy to splat-cooled plutonium alloys
Plutonium alloy foils, thin enough for transmission electron microscopy (TEM), were made by rapidly quenching small specimens from the melt in a ''gun''-type, splat-cooling device. Microstructures in selected regions of the nonequilibrium alloys thus produced are illustrated and discussed. (auth)
Date:
February 1, 1976
Creator:
Rohr, D. L. & Elliott, R. O.
Object Type:
Report
System:
The UNT Digital Library
Applications of PB-210/RA-226 and PO-210/PB-210 Disequilibria in the Study of Marine Geochemical Processes
The distribution of /sup 210/Pb and /sup 210/Po in dissolved (less than 0.4 micron) and particulate (greater than 0.4 micron) phases was measured at ten stations in the tropical and eastern North Atlantic and at two stations in the Pacific. Both radionuclides occur principally in the dissolved phase. Unsupported /sup 210/Pb activities, maintained by flux from the atmosphere, were present in the surface mixed layer and penetrated into the thermocline to depths of about 500 m. Dissolved /sup 210/Po was ordinarily present in the mixed layer at less than equilibrium concentrations, suggesting rapid biological removal of this nuclide. Particulate matter was enriched in /sup 210/Po, with /sup 210/Po//sup 210/Pb activity ratios greater than 1.0, similar to those reported for phytoplankton. Box-model calculations yield a 2-y residence time for /sup 210/Pb and a 0.6-y residence time for /sup 210/Po in the mixed layer. These residence times are considerably longer than the time calculated for turnover of particles in the mixed layer (about 0.1 y). At depths of 100 to 300 m, /sup 210/Po maxima occurred and unsupported /sup 210/Po was frequently present. Calculations indicate that at least 50 percent of the /sup 210/Po removed from the mixed layer is re-cycled within …
Date:
February 1, 1976
Creator:
Bacon, M. P.
Object Type:
Report
System:
The UNT Digital Library
Assessment and study of existing concepts and methods of cryogenic refrigeration for superconducting transmission cables. Final report
A review of current programs to develop superconducting power transmission shows that current plans require helium refrigerators operating at 5 to 13/sup 0/K and 3 to 15 atm pressure with compressor power input in the range of 1,300 to 3,500 HP. Future requirements will probably trend toward slightly higher temperatures and larger refrigerators. Present large helium refrigerators and APCI standard nitrogen plants were studied and an average outage frequency of about 18 per year is found to be typical for both. Cost and reliability studies of alternate refrigeration systems based on studies of components shows that the best current system which would have a failure rate of once in 20 years would consist of two full size oil flooded screw compressors in parallel, manifolded to two full size cold boxes and a liquid helium back up dewar. The principal area of development needed to implement this system is in the switch over mechanisms. These include switching to an auxillary power source in the event of power interruption, switching to the standby compressor, and switching to the back up liquid helium dewar. Costs are projected as being only slightly greater than preliminary estimates.
Date:
February 1, 1976
Creator:
Kadi, F J & Longsworth, R C
Object Type:
Report
System:
The UNT Digital Library
An Assessment of Community Planning for Mass Transit, Volume 2: Atlanta Case Study
This report, based on a study directed by the Office of Technology Assessment (OTA) is one of nine case studies intended to assess community planning of mass transit. It "attempts to identify the factors that help communities, facing critical technological choices, make wise decisions that are consistent with local and national goals for transit" (pg. vii).
Date:
February 1976
Creator:
United States. Congress. Office of Technology Assessment.
Object Type:
Report
System:
The UNT Digital Library
An Assessment of Community Planning for Mass Transit, Volume 3: Boston Case Study
One of nine studies done by the Office of Technology Assessment (OTA) assessing community planning for mass transit. The report identifies "the factors that help communities, facing critical technological choices, make wise decisions that are consistent with local and national goals for transit" (vii).
Date:
February 1976
Creator:
United States. Congress. Office of Technology Assessment.
Object Type:
Report
System:
The UNT Digital Library
An Assessment of Community Planning for Mass Transit: Volume 4 -- Chicago Case Study
One of nine studies done by the Office of Technology Assessment (OTA) assessing community planning for mass transit. The report identifies "the factors that help communities, facing critical technological choices, make wise decisions that are consistent with local and national goals for transit" (p. vii).
Date:
February 1976
Creator:
United States. Congress. Office of Technology Assessment.
Object Type:
Report
System:
The UNT Digital Library
Assessment of Community Planning for Mass Transit: Volume 5 -- Denver Case Study
One of nine studies done by the Office of Technology Assessment (OTA) assessing community planning for mass transit. The report identifies "the factors that help communities, facing critical technological choices, make wise decisions that are consistent with local and national goals for transit" (p. vii).
Date:
February 1976
Creator:
United States. Congress. Office of Technology Assessment.
Object Type:
Report
System:
The UNT Digital Library