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in subjects: "Lenses"

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Optical Processing of Radionuclide Images.

No Description Available.

Date: 1969~

Creator: Beck, Robert N.; Charleston, Donald B.; Harper, Paul V. & Yasillo, Nicholas J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Ion-optical studies for improved ion transmission in multistage isotope-ratio mass spectrometers

Theoretical and experimental ion-optical studies of multistage isotope-ratio mass spectrometers were conducted to determine what improvement in ion transmission efficiency might be attainable through design changes. The computer program GIOS (General Ion Optical Systems) was used to perform theoretical calculations of focusing properties and ion transmission efficiency. Actual transmission through multiple-sector instruments was determined from measurements of the ion beam vertical profile at t… more

Date: October 1, 1991

Creator: Stoffels, J.J. (Pacific Northwest Lab., Richland, WA (United States)) & Laue, H.J. (Purdue Univ., Lafayette, IN (United States))

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Advanced photovoltaic concentrator system low-cost prototype module

This report describes the continued development of an extruded lens and the development of a PV receiver, both of which will be used in the Solar Engineering Applications Corporation (SEA) 10X concentrator. These efforts were pare of a pre-Concentrator Initiative Program. The 10X concentrator consists of an inexpensive, extruded linear Fresnel lens which focuses on one-sun cells which are adhesive-bonded to an anodized aluminum heat sink. Module sides are planned to be molded along with the len… more

Date: September 1, 1991

Creator: Kaminar, N.R.; McEntee, J. & Curchod, D. (Solar Engineering Applications Corp., San Jose, CA (United States))

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Design of photovoltaic central power station concentrator array

A design for a photovoltaic central power station using tracking concentrators has been developed. The 100 MW plant is assumed to be located adjacent to the Saguaro Power Station of Arizona Public Service. The design assumes an advanced Martin Marietta two-axis tracking fresnel lens concentrator. The concentrators are arrayed in 5 MW subfields, each with its own power conditioning unit. The photovoltaic plant output is connected to the existing 115 kV switchyard. The site specific design allows… more

Date: February 1, 1984

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Nonequilibrium Ionization in Magnetohydrodynamic Generators

The steady state ionization of a gas in which the electrons are hot and the atoms cool is investigated. The rate equations governing ionization, excitation, recombination, and de-excitation are solved for a model system using rate coefficients appropriate to the Cs atom. Included are all processes involving free electrons as well as spontaneous emission and resonance trapping of radiation. No incoming radiation is assumed, and the system is assumed large compared with a collisional mean free pa… more

Date: January 1, 1962

Creator: BenDaniel, D.J. & Tamor, S.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Preliminary evaluation of two-element optical concentrators for use in solar photovoltaic systems

The objective of this program was: to evaluate for photovoltaic applications the use of the compound parabolic concentrator design as a field collector--in conjunction with a primary focusing concentrator. The primary focusing concentrator may be a parabolic reflector, an array of Fresnel mirrors, a Fresnel lens, or some other type; Select several candidate configurations of such compound systems (focusing concentrators/CPC field collectors); Perform an analytic evaluation of the technical perf… more

Date: June 30, 1975

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Broadband diffractive lens

Significant progress has been made toward solving the century-old problem of chromatic aberrations in diffractive optics. Our approach exploits modern materials and microfabrication technology and is very different from the purely diffractive strategy,'' which is commonly employed and which results in multiple diffractive elements separated by a finite distance. We have developed a Fresnel zone plate lens comprised of a serial stack of patterned minus-filters which allows broadband radiation to… more

Date: May 28, 1991

Creator: Ceglio, N. M.; Hawryluk, A. M.; London, R. A.; Seppala, L. G. (Lawrence Livermore National Lab., CA (USA)) & Gaines, D. P. (Brigham Young Univ., Provo, UT (USA))

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Telescopic zoom lens attachment for magnified views in underwater radiation environments

This document consists of the notes that accompany a slide presentation (15 slides). The discussion begins with the need for the Telescopic Zoom Lens or TZL; why is was designed and fabricated as well as the design restraints that dictated its final form and function. Next is the use and modification of existing equipment; equipment that was used to remotely scan a nuclear reactor tank using eddy current and ultrasound. The uniqueness of the TZL mechanism itself is discussed; how it meets the d… more

Date: January 1, 1991

Creator: Appel, D.K.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Design desiderata for a laminar flow quadrupole-focused acceleration column

The Pierce design acceleration column has been widely used to accelerate high current beams. It operates well in the space charge limited condition, and will produce beams with a temperature comparable with that of the source. It is restricted in current density, however, by the Child-Langmuir relation. If the ion source itself is not the limiting constraint, then the achievable current density is limited by the electric field at which sparking occurs. One sees clearly that the achievable curre… more

Date: January 1, 1983

Creator: Maschke, A.W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Monitoring of the performance of a solar heated and cooled apartment building. Final report

An all-electric apartment building in Texas was retrofitted for solar heating and cooling and hot water. The system consists of an array of 1280 square feet of Northrup concentrating tracking collectors, a 5000-gallon hot water storage vessel, a 500-gallon chilled water storage vessel, a 25-ton Arkla Industries absorption chiller, and a two-pipe hydronic air conditioning system. The solar air conditioning equipment is installed in parallel with the existing conventional electric heating and coo… more

Date: March 1, 1980

Creator: Vliet, G.C. & Srubar, R.L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

properties of low-index laser materials

Measurements of n/sub 2/ for a large class of oxide and fluoride crystals and glasses have been made using 100-ps, 1.06-..mu..m laser pulses and time-resolved interferometry. Values of n/sub 2/ for various glasses are summarized.

Date: May 9, 1980

Creator: Weber, M. J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Hybrid charged-particle guide for studying (n, charged particle) reactions

Charged-particle transport systems consisting of magnetic quadrupole lenses have been employed in recent years in the study of (n, charged particle) reactions. We have completed a new transport system that is based both on magnetic lenses as well as electrostatic fields. The magnetic focusing of this charged-particle guide is provided by six magnetic quadrupole lenses arranged in a CDCCDC sequence (in the vertical plane). The electrostatic field is produced by a wire at high voltage which stret… more

Date: August 25, 1982

Creator: Haight, R. C.; White, R. M. & Zinkle, S. J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Solar Total Energy System, Large Scale Experiment, Shenandoah, Georgia. Final technical progress report. Volume II, Section 3. Facility concept design. [1. 72 MW thermal and 383. 6 kW electric power for 42,000 ft/sup 2/ knitwear plant]

The Stearns-Roger Engineering Company conceptual design of ERDA's Large Scale Experiment No. 2 (LSE No. 2) is presented. The various LSEs are part of ERDA's Solar Total Energy Program (STES) and a separate activity of the National Solar Thermal Power Systems Program. The object of this LSE is to design, construct, test, evaluate and operate a STES for the purpose of obtaining experience with large scale hardware systems and to establish engineering capability for subsequent demonstrat… more

Date: October 17, 1977

Creator: None,

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Concentrating solar collector test results

Some of the results obtained from three years of testing concentrating solar collectors at Sandia National Laboratories are summarized. Efficiency and thermal loss test data is shown for 16 collectors from 11 different manufacturers.

Date: January 1, 1980

Creator: Dudley, V. E. & Workhoven, R. M.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Transportable charge in a periodic alternating gradient system

A simple set of formulas is derived which relate emittance, line charge density, matched maximum and average envelope radii, occupancy factors, and the (space charge) depressed and vacuum values of tune. This formulation is an improvement on the smooth limit approximation; deviations from exact (numerically determined) relations are on the order of +-2%, while the smooth limit values are in error by up to +-30%. This transport formalism is used to determine the limits of transportable line char… more

Date: May 1, 1985

Creator: Lee, E.P.; Fessenden, T.J. & Laslett, L.J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Development and fabrication of a solar cell junction processing system. Quarterly report No. 2, July 1980

The basic objectives of the program are the following: (1) to design, develop, construct and deliver a junction processing system which will be capable of producing solar cell junctions by means of ion implantation followed by pulsed electron beam annealing; (2) to include in the system a wafer transport mechanism capable of transferring 4-inch-diameter wafers into and out of the vacuum chamber where the ion implantation and pulsed electron beam annealing processes take place; (3) to integrate,… more

Date: July 1, 1980

Creator: Siesling, R.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Integrating figure and finish measurements with surface profiling instruments

No Description Available.

Date: January 1, 1992

Creator: Takacs, P.Z. (Brookhaven National Lab., Upton, NY (United States)) & Church, E.L. (ARDEC, Picatinny, NJ (United States))

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Polymers in solar technologies: an R and D strategy

The use of polymers can increase the cost-effectiveness of solar technologies. The potential impact of polymers may be enhanced earlier if R and D is carried out according to a plan. The purpose of this plan is to present a five-year program consisting of 20 tasks categorized into six major problem areas: response to combined stresses; photochemistry; permeability/adhesion; surface properties; mechanical properties; and development of polymers. A budget required for each task is estimated and s… more

Date: July 1, 1980

Creator: Carroll, W.F. & Schissel, P.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

X-ray zone plates fabricated using electron-beam and x-ray lithography

Fresnel zone plate patterns, free of spherical abberation, with diameters of up to 0.63 mm and linewidths as small as 1000 A were fabricated on polyimide-membrane x-ray masks using scanning electron beam lithography Distortion of the electron beam scan raster was reduced to < 2500 A over a 2 mm x 2 mm field by applying deflection corrections, while viewing the distortion using a moire method. C/sub k/ x-ray lithography was used to replicate the zone plate pattern in thick PMMA over a 100 A thic… more

Date: May 1979

Creator: Shaver, D. C.; Flanders, D. C.; Ceglio, N. M. & Smith, H. I.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

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

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: Report

Partner: UNT Libraries Government Documents Department

open access

Attempt to develop an ''intelligent'' lens design program

We are developing a Lens Design Program intended to operate without user intervention, and to improve its performace with repeated usage. The methodology and current status will be discussed in this paper. 5 refs., 6 figs.

Date: January 1, 1985

Creator: Viswanathan, V. K.; Bohachevsky, I. O. & Cotter, T. P.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Description of the M1 MEQALAC and operating results

MEQALAC stands for Multiple Electrostatic Quadrupole Array Linear Accelerator. The first model, M1, was designed, built, and tested in a three month period from July to October 1979. Within a week of operation a Xenon output current of 85% of the calculated space-charge limit was obtained. In the following sections, the M1 components and operation are described. Some of the design choices were made to allow hand-fabrication with available tools (principally a table-top lathe and a table-top dri… more

Date: January 1, 1979

Creator: Adams, R; Boruch, J & Bertsche, A

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Survey mirrors and lenses and their required surface accuracy. Semiannual technical progress report, September 15, 1978-April 15, 1979

Since the beginning of widespread research and development for solar energy, a major concern has been the effect of optical and surface quality of collector materials on collector performance and the changes in these properties due to environmental conditions. In many instances, this type of data has not been compiled. When data is available on surface quality, mirror or lens optical characteristics, surface deformations due to stress and other errors, it is difficult to quantify the effect the… more

Date: May 1, 1979

Item Type: Report

Partner: UNT Libraries Government Documents Department

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30-kV Proton Injector for PIGMI

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: Article

Partner: UNT Libraries Government Documents Department