7,346 Matching Results

Search Results

prev Results: 97 - 120 next
open access

Experiments and simulation of high current operation at CEBAF

Description: The superconducting rf, cw electron accelerator at CEBAF has achieved the design energy of 4 GeV using 5-pass recirculation through a pair of 400 MeV linacs. Stable beam current of 35 {mu}A has been delivered to the Experimental Hall C. The total beam current that has been recirculated so far is 248 {mu}A. Measurements of the performance of the rf control system have been made in both pulsed and cw mode, and a numerical model has been developed which describes the beam-cavity interaction, inclu… more
Date: July 1, 1996
Creator: Merminga, L.; Crawford, K.; Delayen, J. R.; Doolittle, L.; Hovater, C.; Kazimi, R. et al.
Partner: UNT Libraries Government Documents Department
open access

PAMS photo image retrieval prototype system requirements specification

Description: This project is part of the Photo Audiovisual Management System (PAMS). The project was initially identified in 1989 and has since been has been worked on under various names such as Image Retrieval and Viewing System, Photo Image Retrieval Subsystem and Image Processing and Compression System. This document builds upon the information collected and the analysis performed in the earlier phases of this project. The PAMS Photo Imaging subsystem will provide the means of capturing low resolution d… more
Date: April 30, 1996
Creator: Conner, M. L.
Partner: UNT Libraries Government Documents Department
open access

Solitary waves in particle beams

Description: Since space charge waves on a particle beam exhibit both dispersive and nonlinear character, solitary waves or solitons are possible. Dispersive, nonlinear wave propagation in high current beams is found to be similar to ion-acoustic waves in plasmas with an analogy between Debye screening and beam pipe shielding. Exact longitudinal solitary wave propagation is found for potentials associated with certain transverse distributions which fill the beam pipe. For weak dispersion, the waves satisfy … more
Date: July 1, 1996
Creator: Bisognano, J. J.
Partner: UNT Libraries Government Documents Department
open access

105-DR Large Sodium Fire Facility closure activities evaluation report

Description: This report evaluates the closure activities at the 105-DR Large Sodium Fire Facility. The evaluation compares these activities to the regulatory requirements and closure plan requirements. The report concludes that the areas identified in the closure plan can be clean closed. This report summarizes and evaluates the closure activities performed in support of partial closure of the 105-DR Large Sodium Fire Facility (LSFF). This evaluation will be used in assessing the condition of the 105-DR LS… more
Date: April 11, 1996
Creator: Adler, J. G.
Partner: UNT Libraries Government Documents Department
open access

A safety assessment of rotary mode core sampling in flammable gas single shell tanks: Hanford Site, Richland, Washington

Description: This safety assessment (SA) addresses each of the required elements associated with the installation, operation, and removal of a rotary-mode core sampling (RMCS) device in flammable-gas single-shell tanks (SSTs). The RMCS operations are needed in order to retrieve waste samples from SSTs with hard layers of waste for which push-mode sampling is not adequate for sampling. In this SA, potential hazards associated with the proposed action were identified and evaluated systematically. Several pote… more
Date: April 15, 1996
Creator: Raymond, R. E.
Partner: UNT Libraries Government Documents Department
open access

W-030, AY/AZ tank farm cooling and miscellaneous instrumentation

Description: This is the acceptance test report for construction functional testing of Project W-030 cooling systems and related instrumentation. Project W-030 provides a ventilation upgrade for the four Aging Waste Facility tanks. The Tank Farm Cooling System consists of four forced draft cooling towers, a chilled water system, and associated controls.
Date: April 29, 1996
Creator: Cole, D. B.
Partner: UNT Libraries Government Documents Department
open access

Early operating and reliability experience with the CEBAF DC magnet power supplies

Description: The CEBAF accelerator is a five pass, recirculating, CW electron linear accelerator. There are a total of nine recirculation arcs connecting the two linacs. Three experimental halls are serviced by the accelerator through separate transport channels. The magnet powering system for CEBAF consists of approximately 2000 independent control channels. About 1850 of these channels are low current, trim magnet power supplies. There are 28 higher power supplies used to energize the major bending elemen… more
Date: August 1, 1996
Creator: Merz, W.; Flood, R.; Martin, E. J. & O`Sullivan, M.
Partner: UNT Libraries Government Documents Department
open access

Jefferson Lab, a status report

Description: Thomas Jefferson National Accelerator Facility (Jefferson Lab; formerly known as CEBAF), operates a 4 GeV, 200 {micro}A continuous wave (CW) electron accelerator that re-circulates the beam five times through two superconducting 400 MeV linacs. Electrons can be extracted from any of the five recirculation passes and beam can be simultaneously delivered to the three experimental halls. As the commissioning stage nears completion, the accelerator is becoming a fully operational machine. Experimen… more
Date: October 1, 1996
Creator: Dunham, B. M.
Partner: UNT Libraries Government Documents Department
open access

GLASS FEASIBILITY STUDY: VITRIFICATION OF OAK RIDGE NATIONAL LABORATORY GUNITE WASTE USING IRON PHOSPHATE GLASS (U)

Description: This report describes the results of a glass feasibility study on vitrification of Oak Ridge National Laboratory (ORNL) Gunite waste into an Iron Phosphate glass. This glass feasibility study is part of a larger ORNL Gunite and Associated Tanks Treatability program (TTPSR1-6-WT-31). The treatability program explores different immobilization techniques of placing Gunite waste into a glass or grout form for long term storage. ORNL Gunite tanks contain waste that originated from years of various O… more
Date: March 1, 1996
Creator: Fellinger, T.
Partner: UNT Libraries Government Documents Department
open access

Current Experiments in Particle Physics (September 1996)

Description: This report contains summaries of current and recent experiments in Particle Physics. Included are experiments at BEPC (Beijing), BNL, CEBAF, CERN, CESR, DESY, FNAL, Frascati, ITEP (Moscow), JINR (Dubna), KEK, LAMPF, Novosibirsk, PNPI (St. Petersburg), PSI, Saclay, Serpukhov, SLAC, and TRIUMF, and also several proton decay and solar neutrino experiments. Excluded are experiments that finished taking data before 1991. Instructions are given for the World Wide Web (WWW) searching of the computer … more
Date: September 1, 1996
Creator: Galic, H.; Lehar, F.; Klyukhin, V.I.; Ryabov, Yu.G.; Bilak, S.V.; Illarionova, N.S. et al.
Partner: UNT Libraries Government Documents Department
open access

Automating Pro/Engineer Using Trail Files and External Programs

Description: Keyboard macros provide shortcuts to many repetitive command sequences in Pro/Engineer. They map any number of frequently used command sequences to user-selected keyboard keys. They may be nested within each other and may also include user keyboard entry within the macro. Another powerful feature of Pro/Engineer is adding menu options. Menu options may be added to any Pro/Engineer menu and is an effective way to graphically display keyboard macros to make them more accessible. Command sequences… more
Date: May 21, 1996
Creator: Chow, K.
Partner: UNT Libraries Government Documents Department
open access

D0 Silicon Upgrade: Thermal Analysis of the D0 3 CHIP Single Sided Ladder

Description: The design of the D0 single sided 3 chip ladder is shown in figures 1-3. The SVX II chips are mounted directly opposite the cooling channel so that they are most efficiently cooled. Outboard of the cooling channel on the ladder top side is mounted a flex hybrid of copper/kapton. which is adhered to a beryllium substrate using a two part epoxy. The beryllium substrate. aside from providing a solid mounting structure for the flex circuit. provides a thermal conduction path between the components … more
Date: June 18, 1996
Creator: Ratzmann, Paul M.
Partner: UNT Libraries Government Documents Department
open access

Beam Reconstruction in Longitudinal Phase Space

Description: This paper describes the reconstruction algorithm used in trc, program usage and gives some examples. Also given are sensitivity plots, which show the error in reconstruction due to insufficient profiles, samples, random noise, and an error estimate in synchrotron period.
Date: July 1, 1996
Creator: V., Mane
Partner: UNT Libraries Government Documents Department
open access

12 PWR Assembly MPC Waste Package Criticality Analysis

Description: This analysis was prepared to determine the viability of the MPC PWR-12 waste package concept with respect to criticality regulatory requirements in compliance with the goals of the Waste Package Implementation Plans for conceptual design.
Date: January 18, 1996
Creator: Davis, J.
Partner: UNT Libraries Government Documents Department
open access

MATERIAL COMPOSITIONS AND NUMBER DENSITIES FOR NEUTRONICS CALCULATIONS

Description: The purpose of this analysis is to calculate the number densities and isotopic weight percentages of the standard materials to be used in the neutronics (criticality and radiation shielding) evaluations by the Waste Package Development Department. The objective of this analysis is to provide material number density information which can be referenced by future neutronics design analyses, such as for those supporting the Conceptual Design Report.
Date: January 2, 1996
Creator: Thomas, D. A.
Partner: UNT Libraries Government Documents Department
open access

QA CLASSIFICATION ANALYSIS OF GROUND SUPPORT SYSTEMS

Description: The purpose and objective of this analysis is to determine if the permanent function Ground Support Systems (CI: BABEEOOOO) are quality-affecting items and if so, to establish the appropriate Quality Assurance (QA) classification.
Date: October 29, 1996
Creator: Gwyn, D. W.
Partner: UNT Libraries Government Documents Department
open access

SPENT NUCLEAR FUEL NUMBER DENSITIES FOR MULTI-PURPOSE CANISTER CRITICALITY CALCULATIONS

Description: The purpose of this analysis is to calculate the number densities for spent nuclear fuel (SNF) to be used in criticality evaluations of the Multi-Purpose Canister (MPC) waste packages. The objective of this analysis is to provide material number density information which will be referenced by future MPC criticality design analyses, such as for those supporting the Conceptual Design Report.
Date: January 12, 1996
Creator: Thomas, D. A.
Partner: UNT Libraries Government Documents Department
open access

THERMAL EVALUATION OF THE CONCEPTUAL 12 PWR UNCANISTERED FUEL (UCF) TUBE BASKET DESIGN DISPOSAL CONTAINER

Description: This analysis is prepared by the Mined Geologic Disposal System (MGDS) Waste Package Development Department (WPDD) as specified in the Waste Package Implementation Plan (pp. 4-8, 4-11, 4-24, 5-1, and 5-13. Ref. 5.10) and Waste package Plan (pp. 3-15, 3-17, and 3-24, Ref. 5.9). The design data request addressed herein is: Characterize the conceptual 12 pressurized water reactor (PWR) uncanistered fuel (UCF) waste package (WP) to show that the design is feasible for use in the MGDS environment. T… more
Date: March 1, 1996
Creator: Wang, H.
Partner: UNT Libraries Government Documents Department
open access

Technology Development for a Neutrino AstrophysicalObservatory

Description: We propose a set of technology developments relevant to the design of an optimized Cerenkov detector for the study of neutrino interactions of astrophysical interest. Emphasis is placed on signal processing innovations that enhance significantly the quality of primary data. These technical advances, combined with field experience from a follow-on test deployment, are intended to provide a basis for the engineering design for a kilometer-scale Neutrino Astrophysical Observatory.
Date: February 1, 1996
Creator: Chaloupka, V.; Cole, T.; Crawford, H.J.; He, Y.D.; Jackson, S.; Kleinfelder, S. et al.
Partner: UNT Libraries Government Documents Department
open access

Advanced drilling systems study.

Description: This report documents the results of a study of advanced drilling concepts conducted jointly for the Natural Gas Technology Branch and the Geothermal Division of the U.S. Department of Energy. A number of alternative rock cutting concepts and drilling systems are examined. The systems cover the range from current technology, through ongoing efforts in drilling research, to highly speculative concepts. Cutting mechanisms that induce stress mechanically, hydraulically, and thermally are included.… more
Date: May 1, 1996
Creator: Pierce, Kenneth G.; Livesay, Billy Joe & Finger, John Travis (Livesay Consultants, Encintas, CA)
Partner: UNT Libraries Government Documents Department
Back to Top of Screen