States

Month

Intelligence Implications of the Military Technical Revolution (open access)

Intelligence Implications of the Military Technical Revolution

The availability of precise, real-time intelligence has been an integral part of a military technical revolution being implemented by the Department of Defense for post-Cold War conflicts and peacekeeping operations. Providing this intelligence requires new types of equipment, analysis and organizational relationships within the U.S. intelligence community.
Date: May 1, 1995
Creator: Best, Richard A., Jr.
Object Type: Report
System: The UNT Digital Library
Stratigraphic variations and secondary porosity within the Maynardville Limestone in Bear Creek Valley, Y-12 Plant, Oak Ridge, Tennessee (open access)

Stratigraphic variations and secondary porosity within the Maynardville Limestone in Bear Creek Valley, Y-12 Plant, Oak Ridge, Tennessee

To evaluate groundwater and surface water contamination and migration near the Oak Ridge Y-12 plant, a Comprehensive Groundwater Monitoring Plan was developed. As part of the Maynardville exit pathways monitoring program, monitoring well clusters were ii installed perpendicular to the strike of the Maynardville Limestone, that underlies the southern part of the Y-12 Plant and Bear Creek Valley (BCV). The Maynardville Project is designed to locate potential exit pathways of groundwater, study geochemical characteristics and factors affecting the occurrence and distribution of water-bearing intervals, and provide hydrogeologic information to be used to reduce the potential impacts of contaminants entering the Maynardville Limestone.
Date: May 1, 1995
Creator: Goldstrand, P.M.
Object Type: Report
System: The UNT Digital Library
M-area hazardous waste management facility groundwater monitoring and corrective-action report, First quarter 1995, Volume 3 (open access)

M-area hazardous waste management facility groundwater monitoring and corrective-action report, First quarter 1995, Volume 3

This report, in three volumes, describes the ground water monitoring and corrective-action program at the M-Area Hazardous Waste Management Facility (HWMF) at the Savannah River Site (SRS) during the fourth quarter 1994 and first quarter 1995. Concise description of the program and considerable data documenting the monitoring and remedial activities are included in the document. Volume II includes Appendix I - water elevation and isoconcentration contour maps.
Date: May 1, 1995
Creator: unknown
Object Type: Report
System: The UNT Digital Library
The beam envelope equation -- Systematic solution for a FODO lattice with space charge (open access)

The beam envelope equation -- Systematic solution for a FODO lattice with space charge

Many approximate solutions for matched beam envelope functions with space charge have been developed; they generally have efforts of 2--10% for the parameters of interest and cannot be reliably improved. The new, systematic approach described here provides the K-V envelope functions to arbitrarily high accuracy as a power series in the quadrupole gradient. A useful simplification results from defining the sum and difference of the envelope radii; S = (a+b)/2 varies only slightly with distance z along the system axis, and D = (a-b)/2 contains most of the envelope oscillations. To solve the coupled equations for S and D, the quadrupole strength K(z) is turned on by replacing K with {alpha}K{sub 1} and letting {alpha} increase continuously from 0 to 1. It is found that S and D may be expanded in even and odd powers of {alpha}, respectively. Equations for the coefficients of powers of {alpha} are then solved successively by integration in z. The periodicity conditions and tune integration close the calculation. Simple low order results are typically accurate to 1% or better.
Date: May 1, 1995
Creator: Lee, Edward P.
Object Type: Article
System: The UNT Digital Library
A comprehensive inventory of radiological and nonradiological contaminants in waste buried or projected to be buried in the subsurface disposal area of the INEL RWMC during the years 1984-2003, Volume 3 (open access)

A comprehensive inventory of radiological and nonradiological contaminants in waste buried or projected to be buried in the subsurface disposal area of the INEL RWMC during the years 1984-2003, Volume 3

This is the third volume of this comprehensive report of the inventory of radiological and nonradiological contaminants in waste buried or projected to be buried in the subsurface disposal area of the Idaho National Engineering Laboratory. Appendix B contains a complete printout of contaminant inventory and other information from the CIDRA Database and is presented in volumes 2 and 3 of the report.
Date: May 1, 1995
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Lawrence Berkeley Laboratory 1994 site environmental report (open access)

Lawrence Berkeley Laboratory 1994 site environmental report

The 1994 Site Environmental Report summarizes environmental activities at Lawrence Berkeley Laboratory (LBL) for the calendar year (CY) 1994. The report strives to present environmental data in a manner that characterizes the performance and compliance status of the Laboratory`s environmental management programs when measured against regulatory standards and DOE requirements. The report also discusses significant highlight and planning efforts of these programs. The format and content of the report are consistent with the requirements of the U.S. Department of Energy (DOE) Order 5400.1, General Environmental Protection Program.
Date: May 1, 1995
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Location analysis and strontium-90 concentrations in deer antlers on the Hanford Site (open access)

Location analysis and strontium-90 concentrations in deer antlers on the Hanford Site

The primary objective of this study was to examine the levels of strontium-90 ({sup 90}Sr) in deer antlers collected from near previously active reactor sites and distant from the reactor sites along that portion of the Columbia River which borders the Hanford Site. A second objective was to analyze the movements and home-ranges of mule deer residing within these areas and determine to what extent this information contributes to the observed {sup 90}Sr concentrations. {sup 90}Sr is a long-lived radionuclide (29.1 year half life) produced by fission in irradiated fuel in plutonium production reactors on the Hanford Site. It is also a major component of atmospheric fallout from weapons testing. Concentrations of radionuclides found in the developed environment onsite do not pose a health concern to humans or various wildlife routinely monitored. However, elevated levels of radionuclides in found biota may indicate routes of exposure requiring attention.
Date: May 1, 1995
Creator: Tiller, B L; Eberhardt, L E & Poston, T M
Object Type: Report
System: The UNT Digital Library
Bioavailability of mercury in East Fork Poplar Creek soils (open access)

Bioavailability of mercury in East Fork Poplar Creek soils

The initial risk assessment for the East Fork Poplar Creek (EFPC) floodplain in Oak Ridge, Tennessee, a superfund site heavily contaminated with mercury, was based upon a reference dose for mercuric chloride, a soluble mercury compound not expected to be present in the floodplain, which is frequently saturated with water. Previous investigations had suggested mercury in the EFPC floodplain was less soluble and therefore less bioavailable than mercuric chloride, possibly making the results of the risk assessment unduly conservative. A bioavailability study, designed to measure the amount of mercury available for absorption in a child`s digestive tract, the most critical risk endpoint and pathway, was performed on twenty soils from the EFPC floodplain. The average percentage of mercury released during the study for the twenty soils was 5.3%, compared to 100% of the compound mercuric chloride subjected to the same conditions. Alteration of the procedure to test additional conditions possible during soil digestion did not appreciably alter the results. Therefore, use of a reference dose for mercuric chloride in the EFPC risk assessment without inclusion of a corresponding bioavailability factor may be unduly conservative.
Date: May 1, 1995
Creator: Barnett, M. O. & Turner, R. R.
Object Type: Report
System: The UNT Digital Library
Novel bimetallic dispersed catalysts for temperature-programmed coal liquefaction. Technical progress report, January--March, 1995 (open access)

Novel bimetallic dispersed catalysts for temperature-programmed coal liquefaction. Technical progress report, January--March, 1995

Coal liquefaction involves cleavage of methylene, dimethylene and ether bridges connecting polycyclic aromatic units and the reactions of various oxygen functional groups. The selected compound for model coal liquefaction reactions are 4-(1-naphthylmethyl)bibenzyl (NMBB) and anthrone. This report describes hydrodeoxygenation of O-containing polycyclic model compounds using novel organometallic catalyst precursors and activity and selectivity of dispersed Fe catalysts from organometallic and inorganic precursors for hydrocracking of 4-(1-Naphthylmethyl) bibenzyl. For hydrodeoxygenation, model compound studies were performed using multi-ring systems, or those of comparable molecular weight, to investigate the capabilities of the dispersed catalysts. The model compounds selected include anthrone (carbonyl); dinaphthyl ether (aryl-aryl ether); xanthene (heterocyclic ether); and 2,6-di-t-butyl-4-methylphenol (hydroxyl). The catalyst precursors used were (NH{sub 4}){sub 2}MoS{sub 4}, [Ph{sub 4}P]{sub 2}[Ni(MoS{sub 4}){sub 2}] and Cp{sub 2}Co{sub 2}Mo{sub 2}(CO){sub 2}S{sub 4}. To examine what determines the activity and selectivity of Fe catalysts for hydrogenation and hydrocracking, various molecular precursors with Fe in different chemical environments have been tested in this work to help understand the influence of precursor structure and the effect of sulfur addition on the activity and selectivity of resulting Fe catalysts in model reactions of 4-(naphthylmethyl)bibenzyl. The authors have examined various precursors, including a thiocubane type cluster Cp{sub 4}Fe{sub …
Date: May 1, 1995
Creator: Song, C.; Kirby, S. Schmidt, E. & Schobert, H.H.
Object Type: Report
System: The UNT Digital Library
The growth of epitaxial iron oxides on platinum (111) as studied by X-ray photoelectron diffraction, scanning tunneling microscopy, and low energy electron diffraction (open access)

The growth of epitaxial iron oxides on platinum (111) as studied by X-ray photoelectron diffraction, scanning tunneling microscopy, and low energy electron diffraction

Three complementary surface structure probes, x-ray photoelectron diffraction (XPD), scanning tunneling microscopy (STM), and low-energy electron diffraction (LEED) have been combined in a single instrument. This experimental system has been utilized to study the structure and growth mechanisms of iron oxide films on Pt(111); these films were formed by first depositing a single overlayer of Fe with a certain coverage in monolayers (ML`s), and then thermally oxidizing it in an oxygen atmosphere. For films up to {approximately}1 ML in thickness, a bilayer of Fe and O similar to those in FeO(111) is found to form. In agreement with prior studies, STM and LEED show this to be an incommensurate oxide film forming a lateral superlattice with short- and long-range periodicities of {approximately}3.1 {Angstrom} and {approximately}26.0 {Angstrom}. XPD in addition shows a topmost oxygen layer to be relaxed inward by -0.6 {Angstrom} compared to bulk FeO(111), and these are new structural conclusions. The oxygen stacking in the FeO(111) bilayer is dominated by one of two possible binding sites. For thicker iron oxide films from 1.25 ML to 3.0 ML, the growth mode is essentially Stranski-Krastanov: iron oxide islands form on top of the FeO(111) bilayer mentioned above. For iron oxide films …
Date: May 1, 1995
Creator: Kim, Y. J.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
A technical basis to relax the dew point specification for the environment in the vapor space in DWPF canisters (open access)

A technical basis to relax the dew point specification for the environment in the vapor space in DWPF canisters

This memorandum establishes the technical basis to conclude that relaxing, from 0 C to 20 C, the dew point specification for the atmosphere in the vapor space (free volume) of a DWPF canister will not provide an environment that will cause significant amounts of corrosion induced degradation of the canister wall. The conclusion is based on engineering analysis, experience and review of the corrosion literature. The basic assumptions underlying the conclusion are: (1) the canister was fabricated from Type 304L stainless steel; (2) the corrosion behavior of the canister material, including base metal, fusion zones and heat effected zones, is typified by literature data for, and industrial experience with, 300 series austenitic stainless steels; and (3) the glass-metal crevices created during the pouring operation will not alter the basic corrosion resistance of the steel although such crevices might serve as sites for the initiation of minor amounts of corrosion on the canister wall.
Date: May 1, 1995
Creator: Louthan, M. R. Jr.
Object Type: Report
System: The UNT Digital Library
NO decomposition in non-reducing atmospheres. Technical progress report, December 1994--February 1995 (open access)

NO decomposition in non-reducing atmospheres. Technical progress report, December 1994--February 1995

The overall goal of this research is to establish the fundamental science needed to develop catalysts that will exhibit high activity and selectivity in the decomposition of NO into N{sub 2} and O{sub 2}. This project is centered on the preparation, characterization, and testing of transition metal exchanged catalysts, especially Co(III) zeolites. Additional Co(II) exchanged A zeolite samples have been prepared in aqueous solution at pH = 5.0-6.1 that contain different exchange levels of Co(II). Some of these have been analyzed for Na and Co contents by chemical methods and by X-ray photoelectron spectroscopy. It was shown that preparation of the samples by ion exchange between pH {approx}6 and 7 tended to give stoichiometric ion exchange of Co(II) for Na{sup +}. However, ion exchange at lower pH tended to lead to exchange with H{sup +} while ion exchange at higher pH tended to lead to the presence of excess Co(H), probably by precipitation of a basic Co phase. Systematic analyses of Na A zeolite, CO(II) A zeolites, and Co(II)/Ce(III) A zeolites, as well as Na X zeolite, Na Y zeolite, and Na mordenite for comparison purposes, have been carried out by X-ray photoelectron spectroscopy and Auger spectroscopy methods. Complete data …
Date: May 1, 1995
Creator: Klier, Kamil; Herman, Richard G. & Jirka, Ivan
Object Type: Report
System: The UNT Digital Library
Test plan guidance for transuranic-contaminated arid landfill remedial technology development (open access)

Test plan guidance for transuranic-contaminated arid landfill remedial technology development

This document provides guidance for preparing plans to test or demonstrate buried waste assessment or remediation technologies supported by the U.S. Department of Energy`s Landfill Stabilization Focus Area, Transuranic-Contaminated Arid Landfill Product Line. This document also provides guidance for development of data quality objectives, along with the necessary data to meet the project objectives. The purpose is to ensure that useful data of known quality are collected to support conclusions associated with the designated demonstration or test. A properly prepared test plan will integrate specific and appropriate objectives with needed measurements to ensure data will reflect the Department of Energy Office of Technology Development`s mission, be consistent with Landfill Stabilization Focus Area test goals, and be useful for the Department of Energy Environmental Restoration and Waste Management programs and other potential partners (e.g., commercial concerns). The test plan becomes the planning and working document for the demonstration or test to be conducted ensuring procedures are followed that will allow data of sufficient quality to be collected for comparison and evaluation.
Date: May 1, 1995
Creator: Evans, J. & Shaw, P.
Object Type: Report
System: The UNT Digital Library
Portable electro-mechanically cooled high-resolution germanium detector (open access)

Portable electro-mechanically cooled high-resolution germanium detector

We have integrated a small, highly-reliable, electro-mechanical cryo-cooler with a high-resolution germanium detector for portable/field applications. The system weighs 6.8 kg and requires 40 watts of power to operate once the detector is cooled to its operating temperature. the detector is a 500 mm{sup 2} by 20-mm thick low-energy configuration that gives a full-width at half maximum (FWHM) energy resolution of 523 eV at 122 keV, when cooled with liquid nitrogen. The energy resolution of the detector, when cooled with the electro-mechanical cooler, is 570 eV at 122 keV. We have field tested this system in measurements of plutonium and uranium for isotopic and enrichment information using the MGA and MGAU analysis programs without any noticeable effects on the results.
Date: May 1, 1995
Creator: Neufeld, K. W. & Ruhter, W. D.
Object Type: Article
System: The UNT Digital Library
Utilization of photoconductive gain in a-Si:H devices for radiation detection (open access)

Utilization of photoconductive gain in a-Si:H devices for radiation detection

The photoconductive gain mechanism in a-Si:H was investigated in connection with applications to radiation detection. Various device types such as p-i-n, n-i-n and n-i-p-i-n structures were fabricated and tested. Photoconductive gain was measured in two time scales: one for short pulses of visible light (<1 {mu}sec) which simulates the transit of an energetic charged particle, and the other for rather long pulses of light (1 msec) which simulates x-ray exposure in medical imaging. We used two definitions of photoconductive gain: current gain and charge gain which is an integration of the current gain. We found typical charge gains of 3 {approximately} 9 for short pulses and a few hundred for long pulses at a dark current level of 10 mA/cm{sup 2}. Various gain results are discussed in terms of the device structure, applied bias and dark current.
Date: May 1, 1995
Creator: Lee, H. K.; Drewery, J. S.; Hong, W. S.; Jing, T.; Kaplan, S. N. & Perez-Mendez, V.
Object Type: Article
System: The UNT Digital Library
Trivalent metallocene chemistry of some uranium, titanium, and zirconium complexes (open access)

Trivalent metallocene chemistry of some uranium, titanium, and zirconium complexes

Dicyclopentadienyluranium halide dimers have been prepared and their solution behavior examined. These molecules exist as dimers in solution, and the halide ligands undergo rapid site exchange on the NMR timescale above 50 C. Analogous dicyclopentadienyluranium hydroxide dimers have also been prepared; they oxidatively eliminate hydrogen to give the corresponding oxide dimers. Mechanism of this reaction is consistent with {alpha}migration of one of the hydroxide hydrogen atoms to a uranium center followed by elimination of hydrogen. Ground state of [(Me{sub 3}Si){sub 2}C{sub 5}H{sub 3}]{sub 3}M M = Nd, U and their base adducts has been examined by variable temperature magnetic susceptibility and EPR spectroscopy. The ground state is found to be {sup 4}I{sub 9/2} with a crystal field state consisting largely of J{sub z} = 1/2 lowest, in agreement with previous studies on tris-cyclopentadienylneodymium complexes. The zirconium metallocene Cp{sub 3}Zr has been prepared, characterized crystallographically, and its reactivity studied. Its chemical behavior is controlled by presence of an electron in the non-bonding, d{sub z}2 orbital which prevents formation of base adducts Of Cp{sub 3}Zr, but allows Cp{sub 3}Zr to abstract atoms from other molecules. Electonic and EPR spectra of Cp*{sub 2}TiX complexes, where Cp* is Me{sub 5}C{sub 5} and X is …
Date: May 1, 1995
Creator: Lukens, W. W., Jr.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Inverse modeling as a step in the calibration of the LBL-USGS site-scale model of Yucca Mountain (open access)

Inverse modeling as a step in the calibration of the LBL-USGS site-scale model of Yucca Mountain

Calibration of the LBL-USGS site-scale model of Yucca Mountain is initiated. Inverse modeling techniques are used to match the results of simplified submodels to the observed pressure, saturation, and temperature data. Hydrologic and thermal parameters are determined and compared to the values obtained from laboratory measurements and conventional field test analysis.
Date: May 1, 1995
Creator: Finsterle, S.; Bodvarsson, G.S. & Chen, G.
Object Type: Article
System: The UNT Digital Library
Solubility-limited concentrations and aqueous speciation fo U, Pu, Np, Am and Tc: Comparison between results of Bruno and Sellin (1992) and calculations using GEMBOCHS (version R16) (open access)

Solubility-limited concentrations and aqueous speciation fo U, Pu, Np, Am and Tc: Comparison between results of Bruno and Sellin (1992) and calculations using GEMBOCHS (version R16)

Aqueous speciation and solubility-limited concentrations of U, Pu, Np, Am and Tc were calculated with EQ3/6 and version comR16 of the GEMBOCHS data base for comparison to similar calculations made by Bruno and Sellin (1992) for the SKB 91 exercise. Bruno and Sellin utilized data from the older 0288 version of the EQ3/6 data base but substituted their own data sets for U and Pu. Equilibria were computed in representative fresh and saline Finnsjoen-waters under oxidizing and reducing conditions. The comparisons showed that slight discrepancies exist for U because Bruno and Sellin used thermodynamic data from sources that pre-date the NEA data base. This NEA data base is incorporated into GEMBOCHS. Discrepancy also exists for Pu under reducing conditions because of the choice of thermodynamic data for solid Pu(OH){sub 4}. GEMBOCHS predicts Pu concentrations in solution that are about 1 to 2 orders of magnitude greater than Bruno and Sellin`s values. Np concentration in the oxidizing saline water computed with GEMBOCHS is 20 times higher than Bruno and Sellin`s value. Under reducing conditions, however, GEMBOCHS predicts an order of magnitude less Np in solution. GEMBOCHS computes Am concentrations in solution about 2--3-times larger than those of Bruno and Sellin. Bruno …
Date: May 1, 1995
Creator: Bruton, C. J.
Object Type: Report
System: The UNT Digital Library
Impacts of Western Area Power Administration`s power marketing alternatives on air quality and noise (open access)

Impacts of Western Area Power Administration`s power marketing alternatives on air quality and noise

The Western Area Power Administration, which is responsible for marketing electricity produced at the hydroelectric power-generating facilities operated by the Bureau of Reclamation on the Upper Colorado River, has proposed changes in the levels of its commitment (sales) of long-term firm capacity and energy to its customers. This report describes (1) the existing conditions of air resources (climate and meteorology, ambient air quality, and acoustic environment) of the region potentially affected by the proposed action and (2) the methodology used and the results of analyses conducted to assess the potential impacts on air resources of the proposed action and the commitment-level alternatives. Analyses were performed for the potential impacts of both commitment-level alternatives and supply options, which include combinations of electric power purchases and different operational scenarios of the hydroelectric power-generating facilities.
Date: May 1, 1995
Creator: Chun, K.C.; Chang, Y.S. & Rabchuk, J.A.
Object Type: Report
System: The UNT Digital Library
Maryland Controlled Fusion Research Program. Progress report, November 1, 1992--October 31, 1995 (open access)

Maryland Controlled Fusion Research Program. Progress report, November 1, 1992--October 31, 1995

In the past three years, members of the Maryland Plasma Theory Group have made significant contributions to the national fusion theory program, and, in many cases, these theoretical developments helped to interpret experimental results and to design new experimental programs. In this report, they summarize the technical progress in four major areas of tokamak research: (a) L/H transition and edge turbulence and transport; (b) active control of micro-turbulence and transport; (c) major disruptions; and (d) the sawtooth crash.
Date: May 1, 1995
Creator: Antonsen, T. M. Jr.; Drake, J. F.; Guzdar, P.; Hassam, A.; Liu, C. S. & Ott, E.
Object Type: Report
System: The UNT Digital Library
Savannah River Site offsite hazardous waste shipment data validation report. Revision 1 (open access)

Savannah River Site offsite hazardous waste shipment data validation report. Revision 1

The objective of this data validation is to verify that waste shipments reported in response to the US Department of Energy Headquarters data request are properly categorized according to DOE-HQ definitions. This report documents all findings and actions resulting from the independent review of the Savannah River Site data submittal, and provides a summary of the SRS data submittal and data validation strategy. The overall hazardous waste management and offsite release process from 1987--1991 is documented, along with an identification and description of the hazardous waste generation facilities. SRS did not ship any hazardous waste offsite before 1987. Sampling and analysis and surface surveying procedures and techniques used in determining offsite releasability of the shipments are also described in this report. SRS reported 150 manifested waste shipments from 1984 to 1991 that included 4,755 drums or lab packs and 13 tankers. Of these waste items, this report categorizes 4,251 as clean (including 12 tankers), 326 as likely clean, 138 as likely radioactive, and 55 as radioactive (including one tanker). Although outside the original scope of this report, 14 manifests from 1992 and 1993 are included, covering 393 drums or lab packs and seven tankers. From the 1992--1993 shipments, 58 drums …
Date: May 1, 1995
Creator: Casey, C.; Kudera, D. E.; Page, L. A. & Rohe, M. J.
Object Type: Report
System: The UNT Digital Library
Center for Beam Physics: 1994--95 (open access)

Center for Beam Physics: 1994--95

The Center for Beam Physics is a multidisciplinary research and development unit in the Accelerator and Fusion Research Division at the Lawrence Berkeley Laboratory of the University of California. At the heart of the Center`s mission is a fundamental quest for mechanisms of acceleration, radiation, transport, and focusing of energy and information. Dedicated to exploring the frontiers of particle and photon beam physics, its primary mission is to promote the science and technology of the production, manipulation, storage, and control of systems of charged particles and photons. This roster and annual report provides a glimpse of the scientists, engineers, technical support, students, and administrative staff that make up the CBP`s team and gives a brief review of the multifaceted activities during 1994 and 1995.
Date: May 1, 1995
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Simulation and analysis of the plutonium oxide/metal storage containers subject to various loading conditions (open access)

Simulation and analysis of the plutonium oxide/metal storage containers subject to various loading conditions

The structural and functional requirements of the Plutonium Oxide/Metal Storage Containers are specified in the Report ``Complex 21 Plutonium Storage Facility Material Containment Team Technical Data Report`` [Complex 21, 1993]. There are no existing storage containers designed for long term storage of plutonium and current codes, standards or regulations do not adequately cover this case. As there is no extensive experience with the long term (50+ years) storage of plutonium, the design of high integrity storage containers must address many technical considerations. This analysis discusses a few potential natural phenomena that could theoretically adversely affect the container integrity over time. The plutonium oxide/metal storage container consists of a primary containment vessel (the outer container), a bagless transfer can (the inner container), two vertical plates on top of the primary containment vessel, a circular plate (the flange) supported by the two plates, tube for gas sampling operations mounted at the center of the primary containment vessel top and a spring system being inserted in the cavity between the primary containment vessel and the cap of the bagless transfer can. The dimensions of the plutonium oxide/metal storage container assembly can be found in Figure 2-1. The primary container, the bagless transfer can, …
Date: May 1, 1995
Creator: Gong, C. & Miller, R.F.
Object Type: Report
System: The UNT Digital Library
Alignment and magnet error tolerances for the LCLS x-ray FEL (open access)

Alignment and magnet error tolerances for the LCLS x-ray FEL

We have examined the influence of misalignments and magnet errors on the predicted performance of the Linac Coherent Light Source (LCLS). Due to the extremely large number of wiggler periods (> 10{sup 3}) and the small optical mode size (20 {mu}m), alignment and magnet tolerances will be quite demanding. These demands may increase if the wiggler is split into separate sections by the possible inclusion of diagnostic stations, dispersive sections, etc. We have attempted to quantify such tolerances using the numerical simulation code FRED-3D.
Date: May 1, 1995
Creator: Nuhn, H. D.; Scharlemann, E. T. & Schlueter, R.
Object Type: Article
System: The UNT Digital Library