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Terrain-Responsive Atmospheric Code (TRAC) for plume growth and dispersion in complex terrain

Description: Use of atmospheric dispersion models to assess pollutant impacts in complex terrain is increasing. However, the temporally and spatially varying wind and turbulence fields in mountainous areas often invalidate the assumptions of straight-line flow and horizontal homogeneity inherent in standard plume models. A dispersion model was recently developed at the Rocky Flats Plant to realistically simulate dispersion processes in complex terrain. The new model treats pollutant releases as a series of … more
Date: April 3, 1985
Creator: Hodgin, C.R.
Partner: UNT Libraries Government Documents Department
open access

Review of TAC superferric magnet

Description: The studies reported here include conductor current level optimizations at 0.15 T, 2.0 T, 3.0 T, and 3.25 T, maximum conductor fields at 3.25 T, sensitivity of field quality to variations in the magnetic shunt, and effects of up-down asymmetries. This design is characterized by a magnetic shunt which separates the aperture from the primary coils. The current in the three coils, labeled I/sub c'/ I/sub in'/ and I/sub out'/ may be individually controlled. Two configurations of the trim coil, labe… more
Date: September 3, 1985
Creator: Marks, S. & Humphries, D.
Partner: UNT Libraries Government Documents Department
open access

Identifying heavy-ion-beam fusion design and system features with high economic leverage

Description: We have conducted parametric economic studies for heavy-ion-beam fusion electric power plants. We examined the effects on the cost of electricity of several design parameters: maximum achievable chamber pulse rate, driver cost, target gain, and electric conversion efficiency, and net electric power. We found with reasonable assumptions on driver cost, target gain, and electric conversion efficiency, a 2 to 3 GWe heavy-ion-beam fusion power plant, with a chamber pulse rate of 5 to 10 Hz, can be … more
Date: March 3, 1985
Creator: Meier, W. R. & Hogan, W. J.
Partner: UNT Libraries Government Documents Department
open access

Electron beam brightness with field immersed emission

Description: The beam quality or brightness of an electron beam produced with field immersed emission is studied with two models. First, an envelope formulation is used to determine the scaling of brightness with current, magnetic field and cathode radius, and examine the equilibrium beam radius. Second, the DPC computer code is used to calculate the brightness of two electron beam sources.
Date: December 3, 1985
Creator: Boyd, J.K. & Neil, V.K.
Partner: UNT Libraries Government Documents Department
open access

Preliminary limits on the flux of muon neutrinos from extraterrestrial point sources

Description: We present the arrival directions of 117 upward-going muon events collected with the IMB proton lifetime detector during 317 days of live detector operation. The rate of upward-going muons observed in our detector was found to be consistent with the rate expected from atmospheric neutrino production. The upper limit on the total flux of extraterrestrial neutrinos >1 GeV is <0.06 neutrinos/cm/sup 2/-sec. Using our data and a Monte Carlo simulation of high energy muon production in the earth surr… more
Date: July 3, 1985
Creator: Bionta, R. M.; Blewitt, G.; Bratton, C. B.; Casper, D.; Cortez, B. G.; Chrysicopoulou, P. et al.
Partner: UNT Libraries Government Documents Department
open access

An Electroweak Enigma: Hyperon Radiative Decays

Description: The main thrust of this experiment will be to measure the asymmetry parameter for the electroweak decay {Sigma}{sup +} {yields} p{gamma} and verify its branching ratio. As a secondary goal they will measure, or set new upper limits for, the branching ratio of the electroweak decay {Xi}{sup -} {yields} {Sigma}{sup -}{gamma}. Since the {Xi}{sup -} are expected to be polarized, information on the asymmetry parameter may also be available.
Date: April 3, 1985
Creator: Vorobyov, A.; Jastrzembski, E.; Lach, J.; Marriner, J.; Golovtsov, V.; Krivshich, A. et al.
Partner: UNT Libraries Government Documents Department
open access

Reaction of Topopah Spring tuff with J-13 water at 150{sup 0}C: samples from drill cores USW G-1, USW GU-3, USW G-4, and UE-25h No. 1

Description: Samples of Topopah Spring tuff selected from vertical drill holes USW G-1, GU-3, and G-4, and from the horizontal air-drilled hole at Fran Ridge were reacted with J-13 water at 150{sup 0}C. The primary purpose of these experiments was to compare the resulting solution chemistries to estimate the degree of homogeneity that might be expected in thermally affected ground water in a potential nuclear waste repository at Yucca Mountain. The second purpose was to relate data obtained from welded devi… more
Date: March 3, 1985
Creator: Oversby, V.M.
Partner: UNT Libraries Government Documents Department
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