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Gamma-Ray Compton Light Source Development at LLNL

No Description Available.

Date: June 20, 2007

Creator: Hartemann, F. V.; Anderson, S. G.; Barty, C. J.; Gibson, D. J.; Hagmann, C. A.; Johnson, M. S. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Xe-2 Gamma Rate Sensor Vibration Test

No Description Available.

Date: September 20, 1968

Creator: Anderson, Ralph S.; Burlas, T. C.; Ettenson, N. J.; Fatyol, C. A.; Feret, J. M.; Figenbaum, E. K. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Results of Preliminary Drilling, Red Rock, Arizona

Abstract: Structure drilling under Contract No. AT(05-l)-120 was begun May 13, 1951, and was suspended June 30, 1951, at Red Rock, Arizona with the completion of 12 holes and 2,390.5 feet of drilling. No mineralization was disclosed in the widely spaced holes. The structure and rock composition was found favorable for a potential drilling area.

Date: October 16, 1952

Creator: Anderson, Andrew H.; Foster, John R. & Hurley, Daniel B.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Fabrication of a Set of Realistic Torso Phantoms for Calibration of Transuranic Nuclide Lung Counting Facilities

A set of 16 tissue equivalent torso phantoms has been fabricated for use by major laboratories involved in counting transuranic nuclides in the lung. These phantoms, which have bone equivalent plastic rib cages, duplicate the performance of the DOE Realistic Phantom set. The new phantoms (and their successors) provide the user laboratories with a highly realistic calibration tool. Moreover, use of these phantoms will allow participating laboratories to intercompare calibration information, both… more

Date: October 26, 1983

Creator: Griffith, R. V.; Anderson, A. L.; Sundbeck, C. W. & Alderson, S. W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Development of Forging Techniques for Uranium

Uranium has been successfully forged using a Lobdell-Nazel forging hammer and a forging temperature range of 500 to 650 degrees centigrade. Using standard forging techniques, the metal readily flowed at the temperature chosen. A noticeable increase in tensile strength, yield strength and percent elongation was obtained in forged metal as compared with cast metal. To obtain complete recrystallization and uniform grain size, a minimum of approximately 75 percent reduction in cross section by forg… more

Date: November 1, 1950

Creator: Anderson, R. E.; Taub, J. M. & Doll, D. T.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Overview of Mono-Energetic Gamma-Ray Sources & Applications

Recent progress in accelerator physics and laser technology have enabled the development of a new class of tunable gamma-ray light sources based on Compton scattering between a high-brightness, relativistic electron beam and a high intensity laser pulse produced via chirped-pulse amplification (CPA). A precision, tunable Mono-Energetic Gamma-ray (MEGa-ray) source driven by a compact, high-gradient X-band linac is currently under development and construction at LLNL. High-brightness, relativisti… more

Date: May 18, 2010

Creator: Hartemann, F. V.; Albert, F.; Anderson, G. G.; Anderson, S. G.; Bayramian, A. J.; Betts, S. M. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Mask inspection microscopy with 13.2 nm table-top laser illumination

We report the demonstration of a reflection microscope that operates at 13.2-nm wavelength with a spatial resolution of 55 {+-} 3 nm. The microscope uses illumination from a table-top EUV laser to acquire aerial images of photolithography masks with a 20 second exposure time. The modulation transfer function of the optical system was characterized.

Date: October 14, 2008

Creator: Brizuela, Fernando; Wang, Yong; Brewer, Courtney A.; Pedaci, Francesco; Chao, Weilun; Anderson, Erik H. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

[Return of Capt. Hamilton K. Redway, January 1865]

Return of Capt. Hamilton K. Redway which details the present and absent men of Company "F" First Veteran regiment of the New York Cavalry for the month of January in the year of 1865. The return notes enlisted men on "extra or daily duty," commissioned officers present or absent, and any alterations made to the company for this particular month. This document was created while Redway was stationed at Kelley's Creek in West Virginia.

Date: January 31, 1865

Creator: Redway, Capt. Hamilton K.

Item Type: Text

Partner: UNT Libraries Special Collections

open access

Gamma-Ray Compton Light Source Development at Llnl

A new class of tunable, monochromatic {gamma}-ray sources capable of operating at high peak and average brightness is currently being developed at LLNL for nuclear photoscience and applications. These novel systems are based on Compton scattering of laser photons by a high brightness relativistic electron beam produced by an rf photoinjector. A prototype, capable of producing > 10{sup 8} 0.7 MeV photons in a single shot, with a fractional bandwidth of 1%, and a repetition rate of 10 Hz, is c… more

Date: August 15, 2007

Creator: Hartemann, F. V.; Anderson, S. G.; Gibson, D. J.; Hagmann, C. A.; Johnson, M. S.; Jovanovic, I. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Precision X-Band Linac Technologies for Nuclear Photonics Gamma-Ray Sources

Nuclear photonics is an emerging field of research requiring new tools, including high spectral brightness, tunable gamma-ray sources; high photon energy, ultrahigh-resolution crystal spectrometers; and novel detectors. This presentation focuses on the precision linac technology required for Compton scattering gamma-ray light sources, and on the optimization of the laser and electron beam pulse format to achieve unprecedented spectral brightness. Within this context, high-gradient X-band techno… more

Date: August 31, 2011

Creator: Hartemann, F. V.; Albert, F.; Anderson, S. G.; Bayramian, A. J.; Cross, R. R.; Ebbers, C. A. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Properties of CsI and CsI-TMAE photocathodes

The importance of heating the CsI or CsI-TMAE photocathodes during preparation, as well as the importance of the gas environment on the quantum efficiency is presented. The dependence of the aging characteristics of these photocathodes on the operating temperature, on the presence of gas, and on the charge amplification of the chamber is also discussed. For CsI photocathodes charges in excess of 2{times}10{sup 14} e{sup {minus}}/mm{sup 2} can be collected with little degradation of performance.… more

Date: June 1, 1992

Creator: Anderson, D. F.; Kwan, S.; Peskov, V. & Hoeneisen, B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Geology and Petrophysical Characterization of the Ferron Sandstone for 3-D Simulation of a Fluvial-Deltaic Reservoir Quarterly Report: January 1 - March 31, 1997

The objective of this project is to develop a comprehensive, interdisciplinary, and quantitative characterization of a fluvial-deltaic reservoir which will allow realistic inter-well and reservoir-scale modeling to be constructed for improved oil-field development in similar reservoirs world-wide. The geological and petrophysical properties of the Cretaceous Ferron Sandstone in east-central Utah will be quantitatively determined. Both new and existing data will be integrated into a three-dimens… more

Date: May 20, 1997

Creator: Mattson, Ann; Forster, Craig B.; Anderson, Paul B.; Snelgrove, Steve H. & Chidsey, Thomas C., Jr.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Transportable Vitrification System: Operational experience gained during vitrification of simulated mixed waste

The Transportable Vitrification System (TVS) is a large-scale, fully-integrated, transportable, vitrification system for the treatment of low-level nuclear and mixed wastes in the form of sludges, soils, incinerator ash, and similar waste streams. The TVS was built to demonstrate the vitrification of actual mixed waste at U. S. Department of Energy (DOE) sites. Currently, Westinghouse Savannah River Company (WSRC) is working with Lockheed Martin Energy Systems (LMES) to apply field scale vitrif… more

Date: November 21, 1996

Creator: Whitehouse, J. C.; Burket, P. R.; Crowley, D. A.; Hansen, E. K.; Jantzen, Carol M.; Smith, M. E. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Measurement of the polarization parameter for the reaction $pi$$sup - $p$Yields$$pi$$sup 0$n between 1.03 and 1.79 GeV/c

From 2nd international conference on elementary particles; Aixen- Provence, France (6 Sep 1973). Measurements of the polarization parameter for the reaction pi /sup -/p yields pi /sup o/n were made at the five momenta 1.03, 1.245, 1.44, 1.5 and 1.79 GeV/c. A polarized target was used, with polarizations achieved ranging from 48 to 57%. Salient features of the experiment were the use of neutron counters for time-of-flight measurements as well as angular information and the use of optical spark c… more

Date: September 1, 1973

Creator: Shannon, S.R.; Anderson, L.; Bridgewater, A.; Chaffee, R.; Chamberlain, O.; Dahl, O. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Properties of CsI and CsI-TMAE photocathodes

Date: June 1, 1992

Creator: Anderson, D. F.; Kwan, S.; Peskov, V. (Fermi National Accelerator Lab., Batavia, IL (United States)) & Hoeneisen, B. (Universidad San Francisco de Quito (Ecuador))

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Fiber-Based, Spatially and Temporally Shaped Picosecond UV Laser for Advanced RF Gun Applications

The fiber-based, spatially and temporally shaped, picosecond UV laser system described here has been specifically designed for advanced rf gun applications, with a special emphasis on the production of high-brightness electron beams for free-electron lasers and Compton scattering light sources. The laser pulse can be shaped to a flat-top in both space and time with a duration of 10 ps at full width of half-maximum (FWHM) and rise and fall times under 1 ps. The expected pulse energy is 50 {micro… more

Date: June 8, 2007

Creator: Shverdin, M Y; Anderson, S G; Betts, S M; Gibson, D J; Hartemann, F V; Hernandez, J E et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Circuit bridging of components by smoke

Smoke can adversely affect digital electronics; in the short term, it can lead to circuit bridging and in the long term to corrosion of metal parts. This report is a summary of the work to date and component-level tests by Sandia National Laboratories for the Nuclear Regulatory Commission to determine the impact of smoke on digital instrumentation and control equipment. The component tests focused on short-term effects such as circuit bridging in typical components and the factors that can infl… more

Date: October 1, 1996

Creator: Tanaka, T. J.; Nowlen, S. P. & Anderson, D. J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Measurement of two-component flow using ultrasonic flowmeters

Calibration of transit-time and Doppler ultrasonic flowmeters under two-component flow conditions has been conducted on 400 mm (16-in.) pipe. Testing covered total flows of 0.19 to 1.89 m{sup 3}/s (3000 to 30,000 gpm) and void fractions up to 40%. Both flowmeter types of accurately measured total volumetric flow over a portion of their ranges. Pipe average void fraction, based on a three-beam gamma densitometer, was used to determine water component flow under stratified flow conditions, with s… more

Date: January 1, 1991

Creator: Whitehouse, J. C.; Eghbali, D. A. (Westinghouse Savannah River Co., Aiken, SC (United States)); Flitton, V. E. (EG and G Idaho, Inc., Idaho Falls, ID (United States)) & Anderson, D. G. (Wyle Labs., Norco, CA (United States))

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Operation of a DC large aperture volume-production H sup minus source

In testing a multicusp volume-production H{sup {minus}} ion source (20 cm diameter, 23 cm long), we optimized the gas pressure, the plasma electrode bias potential and the magnetic filter. At the optimum pressure of 9 mT, the H{sup {minus}} beam output increased linearly with discharge power. The maximum H{sup {minus}} beam, measured with a current transformer downstream of the accelerator, was 100 mA while using a 6.67 cm{sup 2} aperture. Presently we are limited by overheating of the cathodes… more

Date: April 1, 1989

Creator: Kwan, J. W.; Ackerman, G. D.; Anderson, O. A.; Chan, C. F.; Cooper, W. S.; deVries, G. J. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

The Sort on Radioactive Waste Type model: A method to sort single-shell tanks into characteristic groups. Revision 2

The SORWT model presents a methodology to group SSTs that is both simple to understand and logical in its assumptions and construction. The SORWT model has predicted the existence of 24 groups of SSTs ranging from 22 tanks per group to two tanks per group. These 24 groups encompass 133 tanks and 93% of the total waste contained in SSTs. The first 14 groups (i.e., those that contain four tanks per group or more) represent 109 tanks and 83% of the total waste volume. This demonstrates the potenti… more

Date: March 1, 1995

Creator: Hill, J.G.; Anderson, G.S. & Simpson, B.C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Synchrotron radiation photoemission studies of core level excitation effects

The recent availability of intense polarized radiation tunable over the range 20-150 eV enables several core levels to be excited. Several remarkable effects have recently been reported when core excitation thresholds have been reached. For example, an increase in yield of 50% was observed in GaSe at the Se 3d threshold (h omega approx. = 57 eV). A considerable increase in photoemission intensity at 6 eV binding energy has been reported by Guillot et al. for Ni at the 3p threshold. A very caref… more

Date: 1979~

Creator: Williams, G. P.; Lapeyre, G. J.; Anderson, J.; Cerrina, F.; Dietz, R. E. & Yafet, Y.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Rapidity and species dependence of particle production at largetransverse momentum for d+Au collisions at psNN = 200 GeV

We determine rapidity asymmetry in the production of charged pions, protons and anti-protons for large transverse momentum (p{sub T}) for d+Au collisions at {radical}s{sub NN} = 200 GeV. The rapidity asymmetry is defined as the ratio of particle yields at backward rapidity (Au beam direction or -ve rapidity) to those at forward rapidity (d beam direction or +ve rapidity). The identified hadrons are measured in the rapidity regions |y| < 0.5 and 0.5 < |y| < 1.0 for the p{sub T} range 2.… more

Date: December 19, 2006

Creator: Abelev, B. I.; Adams, J.; Aggarwal, M. M.; Ahammed, Z.; Amonett, J.; Anderson, B. D. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Seasonal and intraspecific variability of chlorophyll fluorescence, pigmentation and growth of Pinus ponderosa subjected to elevated CO{sub 2}

Atmospheric CO{sub 2}2 is expected to double in the next century, and these increases will have substantial impact on forest ecosystems. However, the database on the effects of elevated CO{sub 2} on forests is limited, and the extent of intraspecific variability remains unknown. We are investigating the effects of elevated CO{sub 2} on the intraspecific variability of quantum yield (as measured through chlorophyll fluorescence Fv/Fm ratio) and pigmentation, and how these are correlated to varia… more

Date: December 1994

Creator: Houpis, J. L. J.; Anschel, D.; Pushnik, J. C.; Demaree, R. S. & Anderson, P. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Projecting future solid waste management requirements on the Hanford Site

The problem of treating and disposing of hazardous transuranic (TRU), low-level radioactive, and mixed waste has become a major concern of the public and the government. At the US Department of Energy's Hanford Site in Washington state, the problem is compounded by the need to characterize, retrieve, and treat the solid waste that was generated and stored for retrieval during the past 20 years. This paper discusses the development and application of a Solid Waste Projection Model that uses fore… more

Date: September 1, 1990

Creator: Shaver, S.R.; Stiles, D.L.; Holter, G.M. (Pacific Northwest Lab., Richland, WA (USA)) & Anderson, B.C. (Westinghouse Hanford Co., Richland, WA (USA))

Item Type: Article

Partner: UNT Libraries Government Documents Department