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FUNDAMENTAL COMPONENTS OF THE "PACE" ANALOG COMPUTER

Description: The analog computer used in this installation was manufactured by Electronics Asscciates, Inc. The installation consists of two consoles and a test rack. Each console is made up of 56 operational amplifiers, 5 electronic multipliers, 5 diode function generators, 1 noise generator, 8 pot padders, 80 attenuators, and the recording equipment. It is possible to "slave" one console to the other for problems that require more equipment than is available on the one console. The test rack is provided for the purpose of checking the components without causing any loss of operating time on the consoles. (W.D.M.)
Date: November 1, 1959
Creator: Scott, W.E.
Partner: UNT Libraries Government Documents Department

FAST ANALOGUE MULTIPLIERS WITH FIELD-EFFECT TRANSISTORS

Description: The solution time of analog multipliers using field-effect transistors is investigated. This time is ultimately limited by the charging time of the transistor junction. In typical devices suitable for analog multiplication, the charging time is found to be about 10 to 20 nsec for a multiplication error of < 1%. A four quadrant pulse amplitude multiplier circuit with a solution time equal to the transistor charging time is described. (auth)
Date: October 1, 1963
Creator: Radeka, V.
Partner: UNT Libraries Government Documents Department

DIGITAL-TO-ANALOGUE CONVERTER (PUNCHED TAPE TO X-Y PLOTTER)

Description: A digital-to-analog converter is described which is a part of a system that converts punched-tape digital data to analog data in a series of points drawn by an x-y plotter. The converter is designed to plot accurately tapes that contain information other than coded numerical coordinates. Operation of the converter is also described along with format requirements and power supplies. (J.R.D.)
Date: January 17, 1962
Creator: Wall, G.N.
Partner: UNT Libraries Government Documents Department

MODIFICATION OF A DAMPOMETER FOR USE WITH A FREE-OSCILLATION DYNAMIC RIG

Description: Presented at the Eighth Meeting of the Supersonic Wind-Tunnel Assoc., Seattle, Wash. Oct. 1957. The Dampometer represents a harmonically damped oscillation by a rotating vector in such a way that the length of the vector is proportional to the damping. The device was designed for use with a forced oscillation dynamic testing, and its modification for use with a free oscillation rig is described. (T.R.H.)
Date: October 1, 1957
Creator: Maydew, R C
Partner: UNT Libraries Government Documents Department

CONTROL ROD DRIVE PROTO-TYPE TEST REPORT

Description: An evaluation under simulated Pathfinder reactor operating conditions of a prototype Pathfinder control rod drive (described) indicated that the unit will perform satisfactorily under all Pathfinder operating conditions. Tests were performed on individual components of the drive and on the assembled drive. (D.C.W.)
Date: October 25, 1963
Creator: Patterson, J.; Duewel, E.; Kern, R.; Jury, M.; Grenda, R.; McIlheran, A. et al.
Partner: UNT Libraries Government Documents Department

PATHFINDER ATOMIC POWER PLANT COOLANT DISTRIBUTION TESTS. Final Report

Description: Tests were made to determine the head loss coefficient through the inlet plenum of the Pathfinder reactor and to determine the now distribution among the fuel element nozzles for various operating conditions--with all three pumps operating at the same flow rate and with any combination of only two pumps operating at the same flow rate. A quarter-scale wooden model was used for the tests. Air was used as the fluld. The loss coefficient was determined to be 1.8 plus or minus 0.3. The velocities of flow through the fuel element nozzles were determined to be within plus or minus 5 per cent of average flow when all pumps are operating and within plus or minus 10 per cent of average flow when only two pumps are operating. (auth)
Date: November 15, 1959
Creator: Wilson, J. & Styles, R.
Partner: UNT Libraries Government Documents Department

ANALOG SOLUTION OF A MODEL OF THE SOURCES OF ELUTRIATABLE FINES IN THE FLUIDIZED BED CLACINATION PROCESS

Description: A model is proposed which depicts the sources of elutriatable fines in the fluidized bed calcination process as being in two major groups, spray drying mechanisms and attrition mechanisms. Based on this model, equations are derived which express the rate of change of the concentration of a chemical tracer material in the elutriated fines, following introduction of the tracer into the feed and following its removal from the feed. This system has been simulated on an analog computer, and by matching the computer simulation to results from an actual calciner run, the rates of generation of fines by each of the two groups of mechanisms has been determined; the same technique results in an estimate of the amount of these fines remaining in the fluidized bed. Agreement between postulated results and results of actual experimental tests lends credence to the usefulness of this analytical technique. (auth)
Date: February 28, 1964
Creator: Grimmett, E.S.
Partner: UNT Libraries Government Documents Department

ELECTRICAL SIMULATION OF DIAPHRAGM FEED PUMP SYSTEM

Description: The electical analog study of the diaphragm feed pump system resulted in changes to the system which have improved the over-all operation and reliability of the pumps. Specifically, the study showed that if the release of the high- pressure oil from the pulsator through the valve on the Scott and Williams pump could be made to take place over a longer period of time, pressure oscillations could be substantially reduced. Also, pressure surges could be reduced by placing an accumulator in the pump discharge line near the check valve. Both of these have been incorporated into sulted in a quieter and smoother operation of the pumping system. (auth)
Date: May 22, 1958
Creator: Pasqua, P.F.
Partner: UNT Libraries Government Documents Department

SOME ELECTRONIC ACCOUNTING DEVICES FOR DATA LOGGING APPLICATIONS

Description: Several analog accounting circuits were designed to determine their applicability to pulse counting in connection with metering of flows in waste calcination processes. Results indicate that a one amplifier design based on transfer function simulation is to be recommended. By use of this circuit design, frequencies of 200 to 50,000 cps can be counted. (J.R.D.)
Date: January 31, 1963
Creator: Jury, S.H.
Partner: UNT Libraries Government Documents Department

LECTURE NOTES ON REACTOR CONTROLS

Description: This material is the outgrowth of the notes prepared for lectures on reactor controls given in 1953-55 at the Oak Ridge School of Reactor Technology. The course on reactor controls was for the purpose of acquainting the student with some of the elementary considerations involved in setting up a control and safety system for a nuclear reactor. Topics are discussed on kinetics, neutron energies, poisoning, analog computing, instrumentation, start-up, neutron sources, etc. (W.D.M.)
Date: June 24, 1959
Creator: Walker, C S
Partner: UNT Libraries Government Documents Department

DESIGN OF MODIFIED QUADRUPOLE MAGNETS

Description: Modifications to the shape of ideal quadrupole magnets were investigated, using an electrolytic tank method. Magnets with straight and with exponential pole faces were considered with 1: 1, 1: 2, and 1:3 apertures. The additional field introduced by these modifications was expressed in an harmonic series and the coefficients of this series plotted against the parameters characterizing the modifications made. (auth)
Date: November 1, 1962
Creator: Goitein, M
Partner: UNT Libraries Government Documents Department

ANALOG COMPUTER STUDY OF THE OPERATION OF THE GAS-COOLED LOOP ON THE OAK RIDGE RESEARCH REACTOR

Description: An annlog computer study of the ORR gas-cooled loop was made. The effects on fuel and gas temperatures of changing gas (nitrogen) flow rates, turning the heater on and off, and inserting or removing the fuel were determined. It was found that the temperature of the sample, if fuel, could be raised more rapidly than it could be reduced, and that the temperature could be reduced faster with high rates of flow. All of the equations used in building up the computer are given, and some of them are derived. (auth)
Date: July 1, 1958
Creator: Green, F.P.; Neill, F.H.; Short, B.E. & Winton, M.L.
Partner: UNT Libraries Government Documents Department

QUARTERLY REPORT OF THE LABORATORY DIRECTOR FOR THE PERIOD JULY 1, 1959 TO SEPTEMBER 30, 1959

Description: The third quarter of 1959 was occupied with putting the finishing touches on components of the Two-Way Model, adjusting the magnetic field to the required magnitude at all points, and life testing completed components. The present status of the model components is given including the magnet, vacuum tank, equipment for acceleration, and injector. Status of various study groups is discussed. A list of papers published, submitted for publication, and presented at meetings for the period Oct. 1958 to Oct. 1959 is given. (W.D.M.)
Date: October 31, 1960
Partner: UNT Libraries Government Documents Department