UNT Libraries Government Documents Department - 52,430 Matching Results

Search Results

prev Results: 97 - 120 next
open access

25 MV tandem accelerator at Oak Ridge

Description: A new heavy-ion accelerator facility is under construction at the Oak Ridge National Laboratory. A brief description of the scope and status of this project is presented with emphasis on the first operational experience with the 25 MV tandem accelerator.
Date: January 1, 1980
Creator: Jones, C. M.
Item Type: Refine your search to only Article
open access

28-nm laser damage testing of LIF

Description: We have tested several samples of LIF, both single crystal and press forged, for damage resistance to 10-ns 248-nm pulses at 35 pps. The damage thresholds - the highest levels at which no damage could be produced - ranged from 4 to 6 J/cm/sup 2/ although some test sites survived irradiation at approx. 30 J/cm/sup 2/. We observed that bulk damage is the primary failure mechanism in single crystal and press forged samples and that both types exhibit the same resistance to laser damage.
Date: January 1, 1981
Creator: Foltyn, S. R. & Newman, B. E.
Item Type: Refine your search to only Article
open access

30-kV Proton Injector for PIGMI

Description: A 30-kV proton injector designed for matching a 31-mA proton beam into the radio-frequency quadrupole (RFQ) section of the PIGMI accelerator has been constructed and tested. This injector uses a small efficient duoplasmatron ion source and a single-gap extraction system for creating a convergent ion beam, and a three-element unipotential einzel lens for focusing the ion beam into the RFQ. A description of this prototype injector is presented, along with the experimental data obtained during the… more
Date: January 1, 1981
Creator: Hamm, R. W.; Mueller, D. W. & Sturgess, R. G.
Item Type: Refine your search to only Article
open access

30-MJ SMES system operating experience: November 1982-June 1983

Description: This paper describes performance measurements on the dewar, coil, and cryogenic system for the 30-MJ superconducting magnetic energy storage (SMES) unit that has recently been tested at a Bonneville Power Administration substation in Tacoma, Washington. The cryostat, the world's largest fiber-reinforced plastic, open-mouthed dewar, boils off 12 l/h in accordance with previous calculations. Cyclic losses in the coil, 54 W for +-8.4-MW modulation at 1 Hz, are approximately 50% greater than calcul… more
Date: January 1, 1983
Creator: Schermer, R.I.
Item Type: Refine your search to only Article
open access

30-MJ superconducting magnetic energy storage for BPA transmission-line stabilizer

Description: The Bonneville Power Administration operates the transmission system that joins the Pacific Northwest and southern California. A 30 MJ (8.4 kWh) superconducting Magnetic Energy Storage (SMES) unit with a 10 MW converter can provide system damping for low frequency oscillations. The unit is scheduled to operate in late 1982. Progress to date is described. The coil is complete. All major components of the electrical and cryogenic systems have been received and testing has begun. Computer control … more
Date: January 1, 1981
Creator: Schermer, R.I.
Item Type: Refine your search to only Article
open access

30-MJ superconducting magnetic-energy storage for BPA transmission-line stabilizer

Description: The Bonneville Power Administration operates the transmission system that joins the Pacific Northwest and southern California. A 30 MJ (8.4 kWh) Superconducting Magnetic Energy Storage (SMES) unit with a 10 MW converter can provide system damping for low frequency oscillations. The unit is scheduled to operate in 1982. Progress during FY 81 is described. The coil is complete. All major components of the electrical and cryogenic systems have been received and testing has begun. Computer control … more
Date: January 1, 1981
Creator: Schermer, R. I.
Item Type: Refine your search to only Article
open access

30-MJ superconducting magnetic energy storage for BPA transmission line stabilizer

Description: The Bonneville Power Administration operates the transmission system that joins the Pacific Northwest and southern California. A 30-MJ (8.4-kWh) Superconducting Magnet Energy Storage (SMES) unit with a 10-MW converter can provide system damping for low frequency oscillations. The unit is scheduled to operate in 1982. Progress during FY 80 is described. The conductor has been fully tested both electrically and mechanically, all of the necessary copper and superconductor has been purchased, and t… more
Date: January 1, 1980
Creator: Schermer, R. I.
Item Type: Refine your search to only Article
open access

30-MJ superconducting magnetic energy storage for electric-transmission stabilization

Description: The Bonneville Power Administration operates the electric power transmission system that connects the Pacific Northwest and southern California. The HVAC interties develop 0.35 Hz oscillations when the lines are heavily loaded. A 30 MJ (8.4 kWh) Superconducting Magnetic Energy Storage (SMES) unit with a 10 MW converter can provide system damping for the oscillation. The unit is scheduled for installation in 1982 and operation in 1982-83. Status of the project is described. The conductor has bee… more
Date: January 1, 1981
Creator: Turner, R. D. & Rogers, J. D.
Item Type: Refine your search to only Article
open access

30 MJ superconducting magnetic energy storage stabilizing coil. Final report for construction

Description: This report covers Phase II, Fabrication and Delivery of the 30 MJ Superconducting Magnetic Energy Storage Stabilizing Coil. A history of the manufacturing and assembly phase of the magnet is presented. Major problems and solutions are summarized, and illustrations of the major operations are provided. The Quality Assurance program is described with a listing of all nonconformance reports. Design documentation is provided, including a Design Document Index, monthly progress reports, and a list … more
Date: March 1, 1983
Item Type: Refine your search to only Report
open access

30-MJ Superconducting Magnetic-Energy-Storage Stabilizing System: An Overview

Description: The 30-MJ superconducting magnetic-energy-storage (SMES) system was devised as an alternate means to modulate the Bonneville Power Administration (BPA) Pacific AC Intertie, a part of the Western US Power System, to prevent undamped power oscillations at 0.35 Hz that were observed to be associated with high power transmission. The SMES system was installed at the BPA Tacoma Substation and successfully operated as an experimental device to initiate tests to determine power system dynamics, to inv… more
Date: January 1, 1983
Creator: Roger, J. D.; Boenig, H. J.; Dean, J. W.; Schermer, R. I.; Annestrand, S. A.; Hauer, J. F. et al.
Item Type: Refine your search to only Article
open access

A 30 MW, 10 GHz Gyroklystron With Linear Collider Application

Description: In this paper, the final preparations for bringing the University of Maryland's 10 GHz, 30 MW gyroklystron experiment on-line are discussed. We describe the initial operation of the modulator and the acceptance tests performed on the electron gun. We explain the enhanced circuit modelling and present a two-cavity design which predicts an efficiency of 33% and a gain of 27 dB. The realization of the design is also discussed. In addition, we briefly discuss the output waveguide and the diagnostic… more
Date: January 1, 1989
Creator: Lawson, W.; Latham, P.E.; Calame, J.; Skopec, M.; Welsh, D.; Hogan, B. et al.
Item Type: Refine your search to only Article
open access

32-Bit computer for large memory applications on FASTBUS

Description: A FASTBUS based 32-bit computer is being built at Los Alamos National Laboratory for use in systems requiring large fast memory in the FASTBUS environment. A separate local execution bus allows data reduction to proceed concurrently with other FASTBUS operations. The computer, which can operate in either master or slave mode, includes the National Semiconductor NS32032 chip set with demand paged memory management, floating point slave processor, interrupt control unit, timers, and time-of-day c… more
Date: January 1, 1985
Creator: Blossom, J. M.; Hong, J. P. & Kellner, R. G.
Item Type: Refine your search to only Article
open access

32-Bit FASTBUS computer

Description: Los Alamos National Laboratory is building a 32-bit FASTBUS computer using the NATIONAL SEMICONDUCTOR 32032 central processing unit (CPU) and containing 16 million bytes of memory. The board can act both as a FASTBUS master and as a FASTBUS slave. It contains a custom direct memory access (DMA) channel which can perform 80 million bytes per second block transfers across the FASTBUS.
Date: January 1, 1985
Creator: Blossom, J.M.; Hong, J.P. & Kellner, R.G.
Item Type: Refine your search to only Article
open access

35 Years of Electron Scattering

Description: A review of the current knowledge of nuclear and nucleon structure gained from electron beam physics is given. Also, the reasons for development of new accelerator facilities (in particular, CEBAF) are discussed.
Date: October 1, 1986
Creator: Walecka, J.
Item Type: Refine your search to only Article
open access

40 CFR 265 interim-status ground-water monitoring plan for the 2101-M pond

Description: This report outlines a ground-water monitoring plan for the 2101-M pond, located in the southwestern part of the 200-East Area on the Hanford Site in south-central Washington State. It has been determined that hazardous materials may have been discharged to the pond. Installation of an interim-status ground-water monitoring system is required under the Resource Conservation and Recovery Act to determine if hazardous chemicals are moving out of the pond. This plan describes the location of new w… more
Date: March 1, 1989
Creator: Chamness, M.A.; Luttrell, S.P. & Dudziak, S.
Item Type: Refine your search to only Report
open access

40 CFR 265 interim status indicator-evaluation ground-water monitoring plan for the 216-B-63 trench

Description: This document outlines a ground-water monitoring plan for the 216-B-63 trench located in the northeast corner of the 200-East Area on the Hanford Site in southeastern Washington State. It has been determined that hazardous materials (corrosives) were disposed of to the trench during past operations. Installation of an interim-status ground-water monitoring system is required to determine whether hazardous chemicals are leaching to the ground water from beneath the trench. This document summariz… more
Date: March 1, 1989
Creator: Bjornstad, B.N. & Dudziak, S.
Item Type: Refine your search to only Report
open access

40 mm bore Nb-Ti model dipole magnet

Description: Preliminary R and D has been started on magnets for a next-generation high-energy-physics accelerator, the 20 TeV Superconducting Supercollider (SSC). One design now being developed at LBL is described in this paper. The design is based on two layers of flattened Nb-Ti cable, a 40 mm ID winding with flared ends, and an operating field of 6.5 T. Experimental results are presented on several one-meter-long models tested at both He I and He II temperature. Measurement of field, residual magnetizat… more
Date: September 10, 1984
Creator: Taylor, C.; Gilbert, W.; Hassenzahl, W.; Meuser, R.; Peters, C.; Rechen, J. et al.
Item Type: Refine your search to only Article
open access

50 MeV polarimeter

Description: A description is given of the construction, operation and calibration of the 50 MeV polarimeter which was used at the ZGS. The dependence of the observed counts on various parameters, including the beam polarization, beam intensity and the solid angle in the two polarimeter arms is also discussed.
Date: April 15, 1980
Creator: Spinka, H.
Item Type: Refine your search to only Report
open access

60 GHz, 200 kW CW gyrotron with high output mode purity

Description: For the first time, a Varian 60 GHz gyrotron, designed specifically to generate microwaves in a single output mode, has been operated at power levels up to 200 kW CW. High output mode purity is required for the efficient utilization of gyrotrons as high power microwave sources for electron cyclotron resonance heating (ECRH) in magnetic fusion plasmas. Using mode-specific directional couplers, measurements of the output mode content indicated that greater than 95% of the microwave output was in … more
Date: January 1, 1984
Creator: Jory, H.; Felch, K.; Bier, R.; Fox, L.; Huey, H.; Ives, L. et al.
Item Type: Refine your search to only Article
open access

60 GHz gyrotron development program. Quarterly report No. 4, April-June 1980

Description: The objective of this program is to develop a microwave oscillator capable of producing 200 kW of CW output power at 60 GHz. The use of cyclotron resonance interaction is being pursued. The design and early procurement and construction phases of this program are discussed.
Date: January 1, 1980
Creator: Shively, J.F.; Grant, T.J.; Stone, D.S.; Symons, R.S. & Wendell, G.E.
Item Type: Refine your search to only Report
open access

60 GHz gyrotron development program. Quarterly report No. 5, July-September 1980

Description: The objective of this program is to develop a microwave oscillator capable of producing 200 kW of CW output power at 60 GHz. The use of cyclotron resonance interaction is being pursued. The design, procurement and early construction phases of this program are discussed.
Date: January 1, 1980
Creator: Shively, J.F.; Grant, T.J.; Nordquist, A.L.; Stone, D.S. & Wendell, G.E.
Item Type: Refine your search to only Report
open access

64 kW concentrator Photovoltaics Application Test Center. Volume. Final report

Description: Kaman Sciences Corporation has designed a 64 kW Concentrating Photovoltaic Applications Test Center (APTEC). The APTEC employs a combined concentrating photovoltaic array in a total energy system application for load sharing the electric and thermal demands of a large computer center with the interfaced electric and natural gas utility. The photovoltaic array is composed of two-axis tracking heliostats of Fresnel lens concentrating, silicon solar cell modules. The modules are cooled with a flui… more
Date: June 1, 1980
Creator: Jardine, D.M. & Jones, D.W.
Item Type: Refine your search to only Report
Back to Top of Screen