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1.1-meter bore, 8-Tesla test facility

Description: The design and fabrication of a 1.1-m bore superconducting coil for an 8- T facility at Lawrence Livermore Laboratory are discussed. This facility will provide the backing field required for testing large multifilamentary Nb$sub 3$Sn coils as part of the superconductor development program at Livermore. The magnet measures 1.85 m o.d., is 1.5 m in length, and is solenoid wound in four separate modules. Total cold weight of the assembly is 18,000 Kg. A NbTi superconductor is used throughout with … more
Date: November 19, 1975
Creator: Nelson, R.; Cornish, D.; Zbasnik, J.; Sackett, S. & Taylor, C.
Item Type: Refine your search to only Article
open access

1.06 μm 150 psec laser damage study of diamond turned, diamond turned/ polished and polished metal mirrors

Description: Using a well characterized 1.06 μm 150 ps glass laser pulse the damage characteristics for diamond turned, diamond turned/ polished, and polished copper and silver mirrors less than 5 cm diameter were studied. Although most samples were tested with a normal angle of incidence, some were tested at 45$sup 0$ with different linear polarization showing an increase in damage threshold for S polarization. Different damage mechanisms observed will be discussed. Laser damage is related to residual surf… more
Date: July 24, 1975
Creator: Saito, T. T.; Milam, D.; Baker, P. & Murphy, G.
Item Type: Refine your search to only Article
open access

15 MeV neutron damage in Cu and Nb

Description: An investigation was made of high-energy neutron damage in Cu and Nb irradiated with approximately 15 MeV neutrons at the Oak Ridge Isochronous Cyclotron. The neutrons were generated by bombarding a thick Be target with 40- MeV deuterons resulting in a high energy neutron spectrum broadly peaked at 15 MeV. Single crystals of Cu and Nb were irradiated at room temperature to fluences of approximately 2 x 10$sup 17$ n/cm$sup 2$. The resulting loop-type defect clusters in the crystals were characte… more
Date: January 1, 1975
Creator: Roberto, J. B.; Narayan, J. & Saltmarsh, M. J.
Item Type: Refine your search to only Article
open access

19 mm ballistic range: a potpourri of techniques and recipes

Description: The expansion of ballistic gun range facilities at LLL has introduced state-of-the-art diagnostic techniques to glovebox-enclosed ballistic guns systems. These enclosed ballistic ranges are designed for the study of one- dimensional shock phenomena in extremely toxic material such as plutonium. The extension of state-of-the-art phtographic and interferometric diagnostic systems to glovebox-enclosed gun systems introduces new design boundaries and performance criteria on optical and mechanical c… more
Date: September 23, 1975
Creator: Carpluk, G.T.
Item Type: Refine your search to only Article
open access

100 mg $sup 251$Cf activation analysis facility at the Savannah River Laboratory

Description: The $sup 252$Cf Activation Analysis Facility at the Savannah River Laboratory (SRL) is used routinely for multielement analyses of a wide variety of solid and liquid samples (e.g., metal alloys, fly ash and other airborne particles, rocks, and aqueous and nonaqueous solutions). An automated absolute activation analysis technique, developed to use neutron transport codes to calculate multienergy group neutron spectra and fluxes, converts counting data directly into elemental concentrations expre… more
Date: January 1, 1975
Creator: MacMurdo, K. W. & Bowman, W. W.
Item Type: Refine your search to only Article
open access

120 kA pulsed dc power system with computerized thyristor triggering

Description: A pulsed dc power system provides 120 kA excitation current for the ORMAK toroidal field coils. A drive potential of 1000 volts brings the coils up to full current in about 0.5 seconds. Constant current is maintained for 0.25 seconds, then approximately 20 x 10$sup 6$ joules of stored energy is dumped in a free-wheeling diode and resistance network. The power system contains 8 each, 30 kA, 500 V thyristor controlled dc power modules in a series/parallel combination. A control computer generates… more
Date: January 1, 1975
Creator: Mosko, S. W.; Bates, D. D.; Bigelow, R. R.; Cottongim, E. K.; Pipes, E. W. & Sueker, K.
Item Type: Refine your search to only Article
open access

200 kW, 800 MHz transmitter system for lower hybrid heating

Description: This paper describes a new rf heating system which has just been completed and is now operational on the ATC machine. The system utilizes four UHF TV klystrons to generate at least 200 kW of power at a frequency of 800 MHz. Pulse widths can be varied from 20 $mu$sec up to 20 msec. A radar type floating deck modulator along with photo-optical transmitting and receiving devices have been incorporated into the system to provide the pulse fidelity and versatility which characterizes this equipment.… more
Date: January 1, 1975
Creator: Deitz, A.
Item Type: Refine your search to only Article
open access

A 218 neutron group master cross section library for criticality safety studies

Description: The AMPX system was used to generate a P$sub 3$ 218 neutron group master cross-section library from ENDF/B-IV data for the fuel, structural, and neutron- absorbing materials tabulated. The library is the data base for the generation of broad-group cross sections for shipping cask calculations and other criticality safety analyses using codes such as KENO and ANISN. Selection of the fine-group energy structure for the 3-eV to 20-MeV energy range included consideration of the resonance structure … more
Date: January 1, 1975
Creator: Ford, W. E., III; Westfall, R. M. & Webster, C. C.
Item Type: Refine your search to only Article
open access

1024-channel portable gamma-ray spectrometer

Description: An instrument is described which is designed to determine radioactive isotope spectra in the field under adverse environmental conditions. The instrument is battery-powered, stores and compares multiple spectra, and performs computations upon the resulting displayed graph. (auth)
Date: November 10, 1975
Creator: McGibbon, A. L.
Item Type: Refine your search to only Article
open access

16th Annual Report

Description: The ACIR Library is composed of publications that study the interactions between different levels of government. This document is an annual report.
Date: January 1975
Creator: United States. Advisory Commission on Intergovernmental Relations.
Item Type: Refine your search to only Book
open access

1964 Project Springfield studies. Research Report 2. [Stratospheric-tropospheric exchange of fallout particles and subsequent rainout of radioactive particles by precipitation systems]

Description: The analysis of the data for a storm on April 4, 1964, showed that in spite of all efforts to obtain a dynamically and internally consistent three-dimensional analysis of conventional wind, pressure, and temperature data, there remain ambiguities of 50 to 100 miles in the horizontal location of the boundaries of the stratospheric air. Missing wind data and temperature errors, though not disastrous in routine meteorological analysis, can seriously affect the potential vorticity computations for … more
Date: October 1, 1975
Creator: Feteris, P. J.
Item Type: Refine your search to only Report
open access

1974 annual report

Description: Separate abstracts were prepared for 12 sections of this report. Six items have been announced in Nuclear Science Abstracts and all twelve items have been announced in ERDA Research Abstracts. (CH)
Date: September 1, 1975
Item Type: Refine your search to only Report
open access

239Pu Contamination in Snakes Inhabiting the Rocky Flats Plant Site

Description: For approximately four years studies have been under way at the Rocky Flats plant to determine contamination patterns and concentrations of Pu in the biota. Contamination of the Rocky Flats environs has resulted from at least three incidents, a September 1957 fire, a May 1969 fire, and leaking barrels containing plutonium-laden cutting oil. The latter incident was considered by far the major source of the plutonium contamination. Results are reported from a study conducted to determine whether … more
Date: January 1, 1975
Creator: Geiger, R. A. & Winsor, T. F.
Item Type: Refine your search to only Report
open access

2XIIB computer data acquisition system

Description: All major plasma diagnostic measurements from the 2XIIB experiment are recorded, digitized, and stored by the computer data acquisition system. The raw data is then examined, correlated, reduced, and useful portions are quickly retrieved which direct the future conduct of the plasma experiment. This is done in real time and on line while the data is current. The immediate availability of this pertinent data has accelerated the rate at which the 2XII personnel have been able to gain knowledge in… more
Date: November 18, 1975
Creator: Tyler, G.C.
Item Type: Refine your search to only Article
open access

2XIIB getter material problems

Description: The uniformity of wire characteristics is vital to the reliable long- time operation of the titanium alloy wire. Of particular importance is the diameter, total emissivity, and alloy mix. The getter wire must be operated at a minimum rate while the life is determined by the maximum rate. At a particular current the difference between the maximum and minimum rate is determined by variations in wire characteristics. Small percentage variations in these characteristics can result in large variatio… more
Date: November 18, 1975
Creator: Vogtlin, G. E.
Item Type: Refine your search to only Article
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