28 Matching Results

Search Results

Results: 1 - 24 next
open access

APD detector electronics for the NSTX Thomson scattering system

Description: An electronics system has been installed and tested for the readout of APD detectors for the NSTX Thomson scattering system. Similar to previous designs, it features preamps with a fast and a slow output. The fast output uses pulse shaping to optimize sensitivity for the 8 nsec scattered light pulse while rejecting noise in the intrinsic plasma background. A low readout noise of {approximately}25 photoelectrons is achieved at an APD gain of 75. The design incorporates a number of features to pr… more
Date: August 7, 2000
Creator: Johnson, D. W.; LeBlanc, B. P.; Long, D. L. & Renda, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cold Vacuum Drying (CVD) Facility Hazards Analysis Report

Description: This report describes the methodology used in conducting the Cold Vacuum Drying Facility (CVDF) Hazard Analysis to support the CVDF Final Safety Analysis Report and documents the results. The hazard analysis was performed in accordance with DOE-STD-3009-94, ''Preparation Guide for US. Department of Energy Nonreactor Nuclear Facility Safety Analysis Reports,'' and implements the requirements of DOE Order 5480.23, ''Nuclear Safety Analysis Reports.''
Date: August 7, 2000
Creator: CROWE, R.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Gyrocenter-gauge kinetic theory

Description: Gyrocenter-gauge kinetic theory is developed as an extension of the existing gyrokinetic theories. In essence, the formalism introduced here is a kinetic description of magnetized plasmas in the gyrocenter coordinates which is fully equivalent to the Vlasov-Maxwell system in the particle coordinates. In particular, provided the gyroradius is smaller than the scale-length of the magnetic field, it can treat high frequency range as well as the usual low frequency range normally associated with gy… more
Date: August 7, 2000
Creator: Qin, H.; Tang, W. M. & Lee, W. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High intensity laser interactions with atomic clusters

Description: The development of ultrashort pulse table top lasers with peak pulse powers in excess of 1 TW has permitted an access to studies of matter subject to unprecedented light intensities. Such interactions have accessed exotic regimes of multiphoton atomic and high energy-density plasma physics. Very recently, the nature of the interactions between these very high intensity laser pulses and atomic clusters of a few hundred to a few thousand atoms has come under study. Such studies have found some ra… more
Date: August 7, 2000
Creator: Ditmire, T
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

IAEA Theory Summary 1998 IAEA Meeting, Yokohama, Japan - Oct. 17--24, 1998

Description: This is a summary of the advances in magnetic fusion energy theory research presented at the 17th International Atomic Energy Agency Fusion Energy Conference from 17--24 October, 1998 in Yokohama, Japan. Theory and simulation results from this conference provided encouraging evidence of significant progress in understanding the physics of thermonuclear plasmas. Indeed, the grand challenge for this field is to acquire the basic understanding that can readily enable the innovations which would ma… more
Date: August 7, 2000
Creator: Tang, W.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Internal Controls: Disbursement Processing Controls Need Improvement

Description: Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a legislative requirement, GAO provided information on the Financial Management Service's (FMS) controls over safeguarding of assets and documenting disbursements and reconciliation of reports as well as the results of previously suggested improvements."
Date: August 7, 2000
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Laboratory Astrophysics using a Spare XRS Microcalorimeter

Description: The XRS instrument on Astro-E is a fully self-contained microcalorimeter x-ray instrument capable of acquiring, optimally filtering, and characterizing events for 32 independent pixels. We have recently integrated a full engineering model XRS detector system into a laboratory cryostat for use on the electron beam ion trap (EBIT) at Lawrence Livermore National Laboratory. The detector system contains a microcalorimeter array with 32 instrumented pixels heat sunk to 60 mK using an adiabatic demag… more
Date: August 7, 2000
Creator: Porter, F. S.; Audley, M. D.; Beiersdorfer, P.; Boyce, K. R.; Brekosky, R. P.; Brown, G. V. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Micromirror Arrays for Adaptive Optics

Description: The long-range goal of this project is to develop the optical and mechanical design of a micromirror array for adaptive optics that will meet the following criteria: flat mirror surface ({lambda}/20), high fill factor (> 95%), large stroke (5-10 {micro}m), and pixel size {approx}-200 {micro}m. This will be accomplished by optimizing the mirror surface and actuators independently and then combining them using bonding technologies that are currently being developed.
Date: August 7, 2000
Creator: Carr, E.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Migration of Research Results into Operational Monitoring Systems

Description: For the Department of Energy (DOE) Knowledge Base to support activities for monitoring nuclear explosions consistent with eventual verification activities under the Comprehensive Nuclear-Test-Ban Treaty (CTBT), a process is defined to ensure the integrity and utility of research results during the migration into information products for use in operational monitoring systems. The process of validating, verifying, and managing the information products ensures deliveries of high-quality Knowledge … more
Date: August 7, 2000
Creator: Casey, Leslie; Shepherd, Ellen; Velasco, Aaron A. & Ruppert, Stan D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

New Building Approach Saves Energy and Cost: Retreat at the Bluffs Prototype, Pulte Homes, Tucson, Arizona

Description: An innovative prototype house built by Pulte Homes as part of the U.S. Department of Energy's Building America program in Tucson, Arizona, saves money for the homeowner by reducing electric air-conditioning costs and gas-heating costs with little or no additional investment.
Date: August 7, 2000
Creator: Hendron, B.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

Office of Personnel Management: Health Insurance Premium Conversion

Description: Other written product issued by the General Accounting Office with an abstract that begins "Pursuant to a legislative requirement, GAO reviewed the Office of Personnel Management's (OPM) new rule on health insurance premium conversion. GAO noted that: (1) the interim rule enables federal employees to pay Federal Employees Health Benefits premiums with pre-tax dollars, as provided by statutory law; and (2) OPM complied with applicable requirements in promulgating the rule."
Date: August 7, 2000
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Phase Startup Initiative Phases 3 and 4 Test Plan and Test Specification ( OCRWM)

Description: Construction for the Spent Nuclear Fuel (SNF) Project facilities is continuing per the Level III Baseline Schedule, and installation of the Fuel Retrieval System (FRS) and Integrated Water Treatment System (IWTS) in K West Basin is now complete. In order to accelerate the project, a phased start up strategy to initiate testing of the FRS and IWTS early in the overall project schedule was proposed (Williams 1999). Wilkinson (1999) expands the definition of the original proposal into four functio… more
Date: August 7, 2000
Creator: PAJUNEN, A.L. & LANGEVIN, M.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Phased Startup Initiative Phase 3 and 4 Test Procedure (OCRWM)

Description: The purpose of this test procedure is to safely operate the Fuel Retrieval System (FRS) and Integrated Water Treatment System (IWTS) with specific fuel canisters, and show that canisters containing fuel can be retrieved from the canister queue, decapped in the Canister Decapper, and loaded into the Primary Clean Machine (PCM) for fuel cleaning; and that fuel can be sorted on the Process Table, then loaded back into fuel canisters and relocated in basin storage. An option is included to load sel… more
Date: August 7, 2000
Creator: PAJUNEN, A.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Precision Agriculture and Site-Specific Management: Current Status and Emerging Policy Issues

Description: Precision agriculture (PA) is a suite of information technologies that can support a farm-based and site-specific crop management system in agricultural production. PA is not a single technology or farming system, but rather a cluster of different techniques. PA uses advanced information technologies to identify and to evaluate temporal and spatial variation in cropland
Date: August 7, 2000
Creator: Cowan, Tadlock
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Prescription Drugs: Expanding Access to Federal Prices Could Cause Other Price Changes

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the expansion of Medicare beneficiaries' access to prescription drugs, focusing on the: (1) federal drug price discounts available to federal and nonfederal purchasers and the size of those discounts; and (2) potential effects that extending such discounts to nonfederal purchasers may have on outpatient drug prices paid by federal and nonfederal … more
Date: August 7, 2000
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Products of an Artificially Induced Hydrothermal System at Yucca Mountain

Description: Studies of mineral deposition in the recent geologic past at Yucca Mountain, Nevada, address competing hypotheses of hydrothermal alteration and deposition from percolating groundwater. The secondary minerals being studied are calcite-opal deposits in fractures and lithophysal cavities of ash-flow tuffs exposed in the Exploratory Studies Facility (ESF), a 7.7-km tunnel excavated by the Yucca Mountain Site Characterization Project within Yucca Mountain. An underground field test in the ESF provi… more
Date: August 7, 2000
Creator: Levy, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Spent Nuclear Fuel (SNF) Removal Campaign Plan

Description: The overall operation of the Spent Nuclear Fuel Project will include fuel removal, sludge removal, debris removal, and deactivation transition activities. Figure 1-1 provides an overview of the current baseline operating schedule for project sub-systems, indicating that a majority of fuel removal activities are performed over an approximately three-and-one-half year time period. The purpose of this document is to describe the strategy for operating the fuel removal process systems. The campaign… more
Date: August 7, 2000
Creator: PAJUNEN, A.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Stabilization of tokamak plasma by lithium streams

Description: The stabilization theory of free-boundary magnetohydrodynamic instabilities in tokamaks by liquid lithium streams driven by magnetic propulsion is formulated. While the conventional, wall-locked, resistive wall mode can be well suppressed by the flow, a new, stream-locked mode determines the limits of the flow stabilization.
Date: August 7, 2000
Creator: Zakharov, L.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen