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Applications of induction linac technology to heavy ion fusion

Description: Evaluation of the application of heavy ion accelerators to ignite d-t pellets in a thermonuclear reactor is discussed. Accelerator design requirements considered include transport-limited current, beam injection conditions, and pulse bunching and focusing characteristics. The desirability of resonant and non-resonant accelerating structures is comparatively examined. The required power system switch tubes are discussed. It is concluded that heavy ion accelerators could offer a promising solutio… more
Date: July 1, 1977
Creator: Faltens, A. & Keefe, D.
Partner: UNT Libraries Government Documents Department
open access

/sup 16/O + /sup 40/Ca inelastic scattering and the elastic scattering wave function

Description: The /sup 16/O + /sup 40/Ca inelastic scattering has been measured at 60-MeV incident energy, and evidence has been found in support of an explicit coupling between direct and elastic channels. The measurements were extended over a large angular range and in particular to very forward angles. The ratio of cross sections between extreme forward and backward angles proved very useful in studying the underlying reaction mechanism.
Date: January 1, 1977
Creator: Rehm, K.E.; Henning, W.; Erskine, J.R. & Kovar, D.G.
Partner: UNT Libraries Government Documents Department
open access

Cryogenic supplies for the TFTR neutral beam line cryopanels

Description: Cryocondensing panels will be used for the Neutral Beam Lines of the TFTR to satisfy a pumping speed requirement of 2.5 x 10/sup 6/ l/s. The cryocondensing panels are fed by liquid helium (LHe), boiling at selectable temperatures of 4.5/sup 0/K or 3.8/sup 0/K. Liquid nitrogen (LN/sub 2/) panels and chevrons thermally shield the LHe panel. The closed-loop LHe supply system and the open loop LN/sub 2/ system are discussed. The helium refrigerator of minimum 1070-W capacity, together with its dist… more
Date: January 1, 1977
Creator: Pinter, G.
Partner: UNT Libraries Government Documents Department
open access

Discussion: ''toughness variations during the tempering of a plain carbon martensitic steel'' by J. E. King, R. F. Smith and J. F. Knott. Retained austenite and transgranular tempered martensite embrittlement

Description: Discussion is presented to substantiate, clarify and reinterpret some of the results of the above authors for the existence and origin of tempered martensite embrittlement (TME) in relation to retained austenite, with reference to the experimental steels worked at LBL for the past several years.
Date: June 1, 1977
Creator: Rao, B.V.N. & Thomas, G.
Partner: UNT Libraries Government Documents Department
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First order study for an iron core OH system for TNS

Description: A simple comparison has been made between an air core and an iron core ohmic heating system for a particular device, and it was shown that the peak power requirements can be substantially reduced by the use of an iron core to power levels handled by industry today. It was also shown that for an ohmic heating system initiated plasma that the cost of the iron core ohmic heating power system (iron core, dual rectifier, and DC switch) is less than the cost for a subset of the power system for an ai… more
Date: January 1, 1977
Creator: Ballou, J. K. & Schultz, J.
Partner: UNT Libraries Government Documents Department
open access

Experimental program to validate analyses of accelerator breeder concepts

Description: The concept of using high-energy particle accelerators to produce neutrons for converting fertile material to fissile is over 25 years old. It is only relatively recently that accelerator design has progressed to a point where the operation approaches commercial viability. Critical unknowns in the concept were identified in a detailed study of specic configurations. Experiments to elucidate these unknowns in a timely manner using existing material and facilities are defined and identified. Basi… more
Date: January 1, 1977
Creator: Talbert Jr., W. L.; Russell, G. J. & Malenfant, R. E.
Partner: UNT Libraries Government Documents Department
open access

Measurement of energy loss in the region of relativistic rise for particle identification

Description: The following boundary conditions are desirable for particle detectors providing momentum and mass measurement in a magnetic field. A multilayer drift chamber of the socalled ''bicycle'' type with a radius of 1.5 m is considered. The useful track length will be l/sub min/ = 1.3 m for a straight track at 90/sup 0/ to the beam axis. Two examples for possible subdivisions of this volume are chosen: (1) number of layers, n = 200 and thickness/layer, x = 6.5 mm; and (2) n = 56 and x = 23 mm. An anal… more
Date: January 1, 1977
Creator: Fischer, J.; Okuno, H. & Walenta, A.H.
Partner: UNT Libraries Government Documents Department
open access

High-energy proton radiation damage of high-purity germanium detectors

Description: Motivated by their applicability to gamma-ray spectroscopy experiments in space, quantitative studies of radiation damage effects in high-purity germanium detectors due to high-energy charged particles have been initiated with the irradiation by 6 GeV/c protons of two 1.0 cm thick planar detectors maintained at 88/sup 0/K. The threshold for resolution degradation and the annealing characteristics differs markedly from those previously observed for detectors irradiated by fast neutrons. Under pr… more
Date: October 1, 1977
Creator: Pehl, R.H.; Varnell, L.S. & Metzger, A.E.
Partner: UNT Libraries Government Documents Department
open access

Conceptual design of a superconducting magnet coil for the large coil program. [Flat-wound NbTi coils]

Description: A conceptual design for a toroidal field (TF) coil for a six coil test array has been developed. The electromagnetic, cryogenic, structural, manufacturing, quality assurance and verification testing requirements have been analyzed. The bore is oval shaped and is 2.35 meters horizontally and 3.35 meters vertically. The coil is designed to operate at 8T peak field at rated current of 10450 amperes when the other 5 coils in the toroidal array are at 80% rated current. Using-flat-wound NbTi conduct… more
Date: January 1, 1977
Creator: Quay, R.; Bryant, R. W.; Koenig, R. F.; Ferrante, J. J.; Linkinhoker, C. L.; Donato, J. W. et al.
Partner: UNT Libraries Government Documents Department
open access

Simulation of chlorinated water discharges from power plants on estuaries and rivers

Description: The fast-transient (tidal-transient) one-dimensional discrete-element chemical transport model and its associated computer code CHMONE were applied to study the effects of chlorinated water discharges from power plants on tidal estuaries and controlled rivers. The mathematical model has the capability to predict simultaneously the hydrodynamic, thermal, and chemical composition of water as one-dimensional time-dependent distributions. (LTW)
Date: January 1, 1977
Creator: Eraslan, A. H.; Lietzke, M. H.; Fischer, S. K. & Kalmaz, E. V.
Partner: UNT Libraries Government Documents Department
open access

Acoustic measurements of the boiling stability tests on THORS sodium loop. [LMFBR]

Description: Acoustic data of boiling stability tests on the THORS (Thermal-Hydraulic Out-of-Reactor Safety) facility were obtained using three sodium-immersible high temperature microphones. The data was analyzed in both the time and frequency domains and provides the following information: (1) the acoustic signal due to sodium boiling was clearly observed; (2) the signal level and the repetition rate of boiling pulses are directly proportional to the applied heat flux; (3) a typical boiling pulse consists… more
Date: January 1, 1977
Creator: Sheen, S.H.; Bobis, J.P. & Carey, W.M.
Partner: UNT Libraries Government Documents Department
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Calorimetric and optical beam diagnostics on the LBL 120-keV neutral beam test facility

Description: The 120-keV Neutral Beam Test Facility at LBL is fitted with several types of instrumentation to determine the properties of the 10- to 15-A hydrogen and deuterium beams produced in this facility. These include a neutral particle dump for measuring the temperature profile generated by the beam, and a fixed and a moveable ion dump to measure the temperature profiles generated by the various ion components after they have been swept out of the neutral beam by a bending magnet. These several dumps… more
Date: October 1, 1977
Creator: Burrell, C. F.; Cooper, W. S.; Steele, W. F. & Smith, R. R.
Partner: UNT Libraries Government Documents Department
open access

Estimate of the longitudinal self electric field of an ion beam

Description: The self electric field on the axis of an ion beam of radius a in a conducting cylinder of radius b is given. The formula assumes that the radius of the conducting cylinder is much smaller than the length of the ion beam (b much less than L) and that E/sub z/ is calculated away from the edge of the beam (vertical bar z vertical bar less than vertical bar L/2 vertical bar). For the HIDE parameters, i.e., loosely speaking a 50 TW, 100 JK, multi-GeV heavy ion beam, the assumption b much less than … more
Date: January 1, 1977
Creator: Irani, A.A.
Partner: UNT Libraries Government Documents Department
open access

Effects of energy constraints on transportation systems. [Twenty-six papers]

Description: Twenty-six papers are presented on a variety of topics including: energy and transportaton facts and figures; long-range planning under energy constraints; technology assessment of alternative fuels; energy efficiency of intercity passenger and freight movement; energy efficiency of intracity passenger movement; federal role; electrification of railroads; energy impact of the electric car in an urban enviroment; research needs and projects in progress--federal viewpoint; research needs in trans… more
Date: December 1, 1977
Creator: Mittal, R. K.
Partner: UNT Libraries Government Documents Department
open access

Avalanche transistor pulser for fast-gated operation of micro-channel plate image-intensifiers

Description: Transistors operated in the avalanche mode are employed to generate a 1000 volt 10 to 30 nsec wide pulse with less than 4 nsec rise and fall times. This pulse is resistively attenuated to approximately equal to 270 volts and drives the image intensifier tube which is a load of approximately equal to 200 pf. To reduce stray inductance and capacitance, transistor chips were assembled on a thick-film hybrid substrate. Circuit parameters, operating conditions, and coupling to the microchannel plate… more
Date: January 1, 1977
Creator: Lundy, A.; Parker, J. R.; Lunsford, J. S. & Martin, A. D.
Partner: UNT Libraries Government Documents Department
open access

HIDE working groups. A. Synchrotron based system

Description: A summary is given of a week's discussions on an ion source to target scenario for a synchrotron for heavy ion fusion. Topics considered include: the number of beams on the target; beam dynamics; and a number of areas explicitly identified as needing further work. (PMA)
Date: January 1, 1977
Creator: Barton, M. Q.
Partner: UNT Libraries Government Documents Department
open access

Vapor phase spectroscopy of complex lanthanide halide--aluminum halide molecular species

Description: The absorption spectrum of ErCl/sub 3/ (AlCl/sub 3/)/sub x/ vapor complex was measured and analyzed using the Judd-Ofelt theory. Structural correlations in other AlCl/sub 3/ vapor complexes and radiation emission are discussed. Fluorescence of TbCl/sub 3/ (AlCl/sub 3/)/sub x/ vapor complex and in the NdCl/sub 3/ (AlCl/sub 3/)/sub x/ system were studied. (DLC)
Date: January 1, 1977
Creator: Carnall, W T; Hessler, J P; Williams, C W & Hoekstra, H R
Partner: UNT Libraries Government Documents Department
open access

TFTR coil case design

Description: The TFTR (TOKAMAK Fusion Test Reactor) TF (Toroidal Field) coil cases are highly loaded structures designed within severe constraints. Foremost among these are basic machine geometry, material characteristics of both the case and the copper/epoxy matrix it supports, and overall cost. Scoping and parametric studies have been performed continuously since conceptual design. The progression of design decisions including coil shape, support locations and their stiffnesses, material selection, and el… more
Date: January 1, 1977
Creator: Pusateri, J.; Barnes, G. & Citrolo, J.
Partner: UNT Libraries Government Documents Department
open access

Radio chemistry as a diagnostic in laser fusion experiments

Description: Nuclear chemistry techniques have been employed in an attempt to measure the density of high compression laser fusion targets. Radioactive /sup 28/Al atoms formed in the /sup 28/Si(n,p)/sup 28/Al reaction arising from the interaction of the 14 MeV neutrons with the silicon atoms in the glass microsphere have been counted at Lawrence Livermore Laboratory using a ..beta..-..gamma.. coincidence method. The detection system that is employed allows activities corresponding to 100 aluminum atoms to b… more
Date: November 1, 1977
Creator: Campbell, E.M.; Hicks, H.G.; Mead, W.C.; Glaros, S.S.; Coleman, L.W. & Laird, W.B.
Partner: UNT Libraries Government Documents Department
open access

Tilt-pour melt-caster for encapsulation of radioactive cesium

Description: Use of the tilt-pour melt-caster makes distinct improvements in the cesium encapsulation process. Compared to the vacuum castings system now in use, the tilt-pour equipment requires no reliance on heat-traced transfer lines, less sealing pressure for capsule filling, is less corrosive to capsules and is easier to repair. From the results of the extensive development program, it is concluded that the tilt-pour melt-caster can be operated to meet the cesium encapsulation production and maintenanc… more
Date: January 1, 1977
Partner: UNT Libraries Government Documents Department
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Plutonium, americium, and uranium in blow-sand mounds of safety-shot sites at the Nevada Test Site and the Tonopah Test Range

Description: Blow-sand mounds or miniature sand dunes and mounds created by burrowing activities of animals were investigated by the Nevada Applied Ecology Group (NAEG) to determine the influence of mounds on plutonium, americium, and uranium distributions and inventories in areas of the Nevada Test Site and Tonopah Test Range. Those radioactive elements were added to the environment as a result of safety experiments of nuclear devices. Two studies were conducted. The first was to estimate the vertical dist… more
Date: January 1, 1977
Creator: Essington, E. H.; Gilbert, R. O.; Wireman, D. L.; Brady, D. N. & Fowler, E. B.
Partner: UNT Libraries Government Documents Department
open access

Gas breakers for tokamak OHMIC-heating duty

Description: The current interrupting capacity of air blast and SF/sub 6/ breakers is reviewed for application in tokamak ohmic-heating circuits. Particular attention is paid to generator breakers for their large current interrupting capacity and suitability for ohmic-heating circuits.
Date: January 1, 1977
Creator: Vogel, H.F.
Partner: UNT Libraries Government Documents Department
open access

Vacuum considerations summary

Description: The vacuum system for Heavy Ion Fusion machines can be divided according to pressure into 4 parts: (a) Ion Sources; (b) Linear Accelerators; (c) Circular Accelerators, Accumulators and Storage Rings; and (d) Reactors. Since ion sources will need rather conventional pumping arrangements and reactors will operate with greater pressures, depending on their mode of operation, only items b and c will be treated in this report. In particular, the vacuum system design will be suggested for the machine… more
Date: January 1, 1977
Partner: UNT Libraries Government Documents Department
open access

Isolation of pathogenic Naegleria from artificially heated waters

Description: Investigations were undertaken to determine whether heated waters facilitate the proliferation of free-living amoeba that cause primary amoebic meningoencephalitis. Water samples were taken close to the discharges of power plants situated on lakes or rivers in Florida and Texas and from cooling towers in Tennessee. The water temperatures ranged from 29 to 42/sup 0/C. Water samples were also taken from several lakes in Florida and Texas without associated power plants. The water temperatures of … more
Date: January 1, 1977
Creator: Tyndall, R L; Willaert, E; Stevens, A R & Coutant, C C
Partner: UNT Libraries Government Documents Department
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