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Technician support for operation and maintenance of large fusion experiments: the tandem mirror experiment upgrade (TMX-U) approach

Description: As experiments continue to grow in size and complexity, a few technicians will no longer be able to maintain and operate the complete experiment. Specialization is becoming the norm. Subsystems are becoming very large and complex, requiring a great deal of experience and training for technicians to become qualified maintenance/operation personnel. Formal in-house and off-site programs supplement on-the-job training to fulfill the qualification criteria. This paper presents the Tandem Mirror Exp… more
Date: December 1, 1983
Creator: Mattson, G.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Catalytic steam gasification of bagasse for the production of methanol

Description: Pacific Northwest Laboratory (PNL) tested the catalytic gasification of bagasse for the production of methanol synthesis gas. The process uses steam, indirect heat, and a catalyst to produce synthesis gas in one step in fluidized bed gasifier. Both laboratory and process development scale (nominal 1 ton/day) gasifiers were used to test two different catalyst systems: (1) supported nickel catalysts and (2) alkali carbonates doped on the bagasse. This paper presents the results of laboratory and … more
Date: December 1, 1983
Creator: Baker, E.G. & Brown, M.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Proceedings of the Fifth Annual Participants' Information Meeting: DOE Low-Level Waste Management Program

Description: The meeting consisted of the following six sessions: (1) plenary session I; (2) disposal technology; (3) characteristics and treatment of low-level waste; (4) environmental aspects and performance prediction; (5) overall summary sessions; and (6) plenary session II. Fifty two papers of the papers presented were processed for inclusion in the Energy Data Base. (ATT)
Date: December 1, 1983
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Hot gas cleanup using solid supported molten salt for integrated coal gasification/molten carbonate fuel cell power plants. Topical report, October 1982-December 1983

Description: Battelle, Pacific Northwest Laboratories is developing a solid supported molten salt (SSMS) hot gas cleanup process for integrated coal gasification/molten carbonate fuel cell (MCFC) power plants. Exploratory and demonstration experiments have been completed to select a salt composition and evaluate its potential for simultaneous hydrogen sulfide (H/sub 2/S) and hydrogen chloride (HCl) removal under the conditions projected for the MCFC plants. Results to date indicate that equilibrium capacity… more
Date: December 1, 1983
Creator: Lyke, S. E.; Sealock, L. J. Jr. & Roberts, G. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ion cyclotron radio frequency systems and performance on the tandem mirror experiment-upgrade (TMX-U)

Description: High power ion cyclotron radio frequency (ICRF) systems are now gaining greater attention than before as prime driver ion heating systems. Lawrence Livermore National Laboratory (LLNL) has installed a 200 kW high frequency (HF) transmitter system on its Tandem Mirror Experiment-Upgrade (TMX-U). This paper describes the system, antenna, controls, and monitoring apparatus. The transmitter operates into a high Q antenna installed in the central cell region of the experiment. It incorporates a dual… more
Date: December 1, 1983
Creator: Moore, T. L.; Molvik, A. W.; Cummins, W. F.; Pedrotti, L. R.; Henderson, A. L.; Karsner, P. G. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Heavy ion drivers for inertial confinement fusion

Description: The advantages of heavy ion beams as a way of delivering the needed energy and power to an inertial fusion target are surveyed. The existing broad technology base of particle accelerators provides an important foundation for designing, costing, and evaluating proposed systems. The sequence of steps needed for the verification of the heavy ion approach is described; recent research results are even more encouraging than had been assumed hitherto.
Date: December 1, 1983
Creator: Keefe, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Assessment of tritium breeding requirements for fusion power reactors

Description: This report presents an assessment of tritium-breeding requirements for fusion power reactors. The analysis is based on an evaluation of time-dependent tritium inventories in the reactor system. The method presented can be applied to any fusion systems in operation on a steady-state mode as well as on a pulsed mode. As an example, the UWMAK-I design was analyzed and it has been found that the startup inventory requirement calculated by the present method significantly differs from those previou… more
Date: December 1, 1983
Creator: Jung, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Kinetic analysis of dynamic PET data

Description: Our goal is to quantify regional physiological processes such as blood flow and metabolism by means of tracer kinetic modeling and positron emission tomography (PET). Compartmental models are one way of characterizing the behavior of tracers in physiological systems. This paper describes a general method of estimating compartmental model rate constants from measurements of the concentration of tracers in blood and tissue, taken at multiple time intervals. A computer program which applies the me… more
Date: December 1, 1983
Creator: Knittel, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Microwave measurement test results of circular waveguide components for electron cyclotron resonant heating (ECRH) of the Tandem Mirror Experiment-Upgrade (TMX-U)

Description: Development of high-power components for electron cyclotron resonant heating (ECRH) applications requires extensive testing. In this paper we describe the high-power testing of various circular waveguide components designed for application on the Tandem Mirror Experiment-Upgrade (TMX-U). These include a 2.5-in. vacuum valve, polarizing reflectors, directional couplers, mode converters, and flexible waveguides. All of these components were tested to 200 kW power level with 40-ms pulses. Cold tes… more
Date: December 1, 1983
Creator: Williams, C.W.; Rubert, R.R.; Coffield, F.E.; Felker, B.; Stallard, B.W. & Taska, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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High performance, suppressed-fission ICF hybrid

Description: The neutronics aspects of an ICF hybrid concept are discussed. The breeding blanket consists of a beryllium neutron multiplier, metallic thorium fertile fuel and a liquid-lithium coolant. The fertile fuel fraction is 30 vol%, which is much higher than previous one-zone, suppressed-fission hybrid concepts. Fission in the bred /sup 233/U is suppressed by competition from tritium breeding reactions in /sup 6/Li. The total breeding ratio, T + F, is 2.05, and the total neutron energy deposited is 41… more
Date: December 1, 1983
Creator: Meier, W. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Thermionic cogeneration burner assessment study performance analysis results

Description: The purpose of this contract was to (1) test and evaluate two of the more important engineering aspects of designing and building thermionic cogeneration burners (TCB's); (2) make a cost and performance estimate of the TCB; and identify and evaluate industries where TCB's could be installed and where that the electrical power (dc) produced by the TCB's would be used directly in the process. The results of the performance analysis are detailed.
Date: December 1, 1983
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fuel systems for compact fast space reactors

Description: About 200 refractory metal clad ceramic fuel pins have been irradiated in thermal reactors under the 1200 K to 1550 K cladding temperature conditions of primary relevance to space reactors. This paper reviews performance with respect to fissile atom density, operating temperatures, fuel swelling, fission gas release, fuel-cladding compatibility, and consequences of failure. It was concluded that UO/sub 2/ and UN fuels show approximately equal performance potential and that UC fuel has lesser po… more
Date: December 1, 1983
Creator: Cox, C.M.; Dutt, D.S. & Karnesky, R.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Pressure bump instability in very large cold bore storage rings

Description: Calculations have been done to estimate the circulating current necessary to induce the onset of a pressure bump instability in a cold bore storage ring. For a wide range of storage ring parameters, the instability threshold current is more than an order of magnitude higher than the operating current. 4 references, 2 tables.
Date: December 1, 1983
Creator: Limon, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Answers to questions about updated estimates of occupational radiation doses at Three Mile Island, Unit 2

Description: The purpose of this question and answer report is to provide a clear, easy-to-understand explanation of revised radiation dose estimates which workers are likely to receive over the course of the cleanup at Three Mile Island, Unit 2, and of the possible health consequences to workers of these new estimates. We will focus primarily on occupational dose, although pertinent questions about public health and safety will also be answered.
Date: December 1, 1983
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Neutron therapy facility at the Institute of High Energy Physics, Academia Sinica

Description: The 10 MeV proton linac which was designed as preinjector for the Beijing 50 GeV Proton Synchrotron (BPS) was completed by the end of 1982. Because of the economic readjustment in the People's Republic of China the BPS project was cancelled. Then, the Institute of High Energy Physics decided to increase the energy of the linac from 10 MeV to 35.5 MeV. This increase will take place using the primary five megawatts RF system of the 10 MeV linac. This 35.5 MeV proton linac will be used for researc… more
Date: December 1, 1983
Creator: Zhu, Y.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Field testing of fugitive dust control techniques at a uranium mill tailings pile - 1982 Field Test, Gas Hills, Wyoming.

Description: A field test was conducted on a uranium tailings pile to evaluate the effectiveness of 15 chemical stabilizers for control of fugitive dust from uranium mill tailings. A tailings pile at the Federal American Partners (FAP) Uranium Mill, Gas Hills, Wyoming, was used for the field test. Preliminary laboratory tests using a wing tunnel were conducted to select the more promising stabilizers for field testing. Fourteen of the chemical stabilizers were applied with a field spray system pulled behind… more
Date: December 1, 1983
Creator: Elmore, M.R. & Hartley, J.N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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First wall and limiter lifetime in pulsed tokamak reactors

Description: This study concentrates on the structural integrity of certain reactor subsystems under cyclic operation to answer the question: how long a burn pulse is needed to achieve the benefits of steady-state operation. Component lifetime in the steady-state is limited by three effects: radiation damage, disruptions, and sputtering erosion. Cyclic operation modifies one of these (the number of disruptions may increase with the number of burn cycles) and introduces a fourth life limit, thermal fatigue. … more
Date: December 1, 1983
Creator: Ehst, D.; Majumdar, S.; Cha, Y. & Hassanein, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Fundamental mode rectangular waveguide system for electron-cyclotron resonant heating (ECRH) for tandem mirror experiment-upgrade (TMX-U)

Description: We present a brief history of TMX-U's electron cyclotron resonant heating (ECRH) progress. We emphasize the 2-year performance of the system, which is composed of four 200-kW pulsed gyrotrons operated at 28 GHz. This system uses WR42 waveguide inside the vacuum vessel, and includes barrier windows, twists, elbows, and antennas, as well as custom-formed waveguides. Outside the TMX-U vessel are directional couplers, detectors, elbows, and waveguide bends in WR42 rectangular waveguide. An arc dete… more
Date: December 1, 1983
Creator: Rubert, R.R.; Felker, B.; Stallard, B.W. & Williams, C.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Review of negative ion source technology

Description: H/sup -/ or D/sup -/ ions are required for generating high energy neutral beams in heating fusion plasmas. Two distinct types of H/sup -/ ion sources can be identified: (1) surface sources - in which the H/sup -/ ions are generated by particle collisions with low work function metal surfaces; and (2) volume sources - in which the H/sup -/ ions are produced by electron-molecules and electron-ion collision processes in the volume of a hydrogen discharge. Recent experiments demonstrate that reason… more
Date: December 1, 1983
Creator: Leung, K. N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Fabrication and testing of the flexible transmission line to the TFTR neutral beam ion sources

Description: The four Neutral Beam Injectors (NBI) on the TFTR Tokamak Test Cell (TTC) floor require twelve transmission lines to carry arc and filament power to the twelve ion sources from the basement. Also, the Neutral Beam Test Cell (NBTC) requires three lines but on the same floor through a wall. The same basic specifications apply: (1) center bundle operates at 120 kV with respect to the outer cables, (2) filament circuits at 6000 A, (3) arc circuits at 3000 A, (4) gradient grid, (5) accel grids in a … more
Date: December 1, 1983
Creator: Haughian, J.; Lou, K.; Byrns, R.; Fong, E. & Carrieri, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Emittance growth in the collider arcs due to transverse wakefields

Description: The three main components of the dipole wakefield in the collider arcs are the resistive wall wake due to the finite conductivity of the vacuum chamber wall and the wakes due to discontinuities at the beam position monitors and vacuum chamber bellows. In the first section we estimate the dipole wakefield arising from the resistive wall wake. In the second section results of TBCI calculations of the wakes due to the BPM's and bellows are presented, and compared with the resistive wall calculatio… more
Date: December 1, 1983
Creator: Peterson, J. M. & Wilson, P. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reactor safety research programs. Quarterly report, April-June 1983. Vol. 2

Description: This document summarizes work performed by Pacific Northwest Laboratory from April 1 through June 30, 1983, for the Division of Accident Evaluation and the Division of Engineering Technology, US Nuclear Regulatory Commission. Evaluations of nondestructive examination (NDE) techniques and instrumentation are reported; areas of investigation include demonstrating the feasibility of determining the strength of structural graphite, evaluating the feasibility of detecting and analyzing flaw growth i… more
Date: December 1, 1983
Creator: Edler, S.K. (ed.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Impact of inservice inspection on the reliability of nuclear piping

Description: The reliability of nuclear piping is a function of piping quality as fabricated, service loadings and environments, plus programs of continuing inspection during operation. This report presents the results of a study of the impact of inservice inspection (ISI) programs on the reliability of specific nuclear piping systems that have actually failed in service. Two major factors are considered in the ISI programs: one is the capability of detecting flaws; the other is the frequency of performing … more
Date: December 1, 1983
Creator: Woo, H.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Drift-pump coil design for a tandem mirror reactor

Description: This paper describes both the theory and mechanical design behind a new concept for trapped ion removal from tandem mirror end plugs. The design has been developed for the Mirror Advanced Reactor Study (MARS). The new drift-pump coils replace charge-exchange pump beams. Pump beams consume large amounts of power and seriously reduce reactor performance. Drift-pump coils consume only a few megawatts of power and introduce no added burden to the reactor vacuum pumps. In addition, they are easy to … more
Date: December 1, 1983
Creator: Logan, B. G. & Neef, W. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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