UNT Libraries Government Documents Department - 19 Matching Results

Search Results

Results: 1 - 19
open access

D0 Carriage Roller Bearing Measurements

Description: All of the ordered Tychoway rollers, to be used under the cryostat carriages on the center beam, have to be modified to accommodate a keyed way used to guide the cryostat along these same ways. A 0.320 x 0.406 inch notch is machined along one of the longer lower edges in order to create a 0.640 x 0.406 inch keyway when two of these notched rollers are bolted together (side by side) for installation. This keyway will fit over a .635 x .375 inch key, which is inserted into the ways. Due to the cl… more
Date: February 6, 1989
Creator: Jaques, Al
Item Type: Refine your search to only Report
open access

DRCELL: A software package for drift chamber cell design

Description: Designing a drift chamber cell geometry which optimizes resolution and two track separation is not a straightforward task. This paper describes a software package which helps visualize the behavior of drifting electrons within the cell under the influence of electric and magnetic fields. Histograms of chamber pulse shapes and arrival times may be generated. In addition, a calculation of the gas gain is performed. The package presently uses drift velocity, drift angle, gain, and dE/dx parameteri… more
Date: March 6, 1989
Creator: Baller, B. R.
Item Type: Refine your search to only Report
open access

Enhanced durability and reactivity for zinc ferrite desulfurization sorbent

Description: AMAX Research Development Center (AMAX R D) has been investigating methods for enhancing the reactivity and durability of the zinc ferrite desulfurization sorbent. Zinc ferrite sorbents are intended for use in desulfurization of hot coal gas in integrated gasification combined cycle (IGCC) or molten carbonate fuel cell (MCFC) applications. For the present program, the reactivity of the sorbent may be defined as its sulfur sorption capacity at the breakthrough point and at saturation in a bench-… more
Date: March 6, 1989
Creator: Jha, M. C. & Berggren, M. H.
Item Type: Refine your search to only Report
open access

Enhanced durability and reactivity for zinc ferrite desulfurization sorbent. Quarterly technical progress report 9, October--December 1988

Description: AMAX Research & Development Center (AMAX R&D) has been investigating methods for enhancing the reactivity and durability of the zinc ferrite desulfurization sorbent. Zinc ferrite sorbents are intended for use in desulfurization of hot coal gas in integrated gasification combined cycle (IGCC) or molten carbonate fuel cell (MCFC) applications. For the present program, the reactivity of the sorbent may be defined as its sulfur sorption capacity at the breakthrough point and at saturation in a benc… more
Date: March 6, 1989
Creator: Jha, Mahesh C. & Berggren, Mark H.
Item Type: Refine your search to only Report
open access

Modeling ferrite electromagnetic response in the time domain

Description: The behavior of ferrite loads commonly found in induction accelertors has important consequences for the performance of these accelerators. Previous work by the authors on modeling the electromagnetic fields in induction cavities has focussed upon use of a simple, phenomenological model for the process of magnetization reversal in these ferrite loads. In this paper we consider a model for magnetization reversal which is more deeply rooted in theory, and present a simulation of the reversal proc… more
Date: April 6, 1989
Creator: Johnson, J.; DeFord, J. F. & Craig, G. D.
Item Type: Refine your search to only Article
open access

Nuclear fuel element

Description: A nuclear fuel element and a method of manufacturing the element. The fuel element is comprised of a metal primary container and a fuel pellet which is located inside it and which is often fragmented. The primary container is subjected to elevated pressure and temperature to deform the container such that the container conforms to the fuel pellet, that is, such that the container is in substantial contact with the surface of the pellet. This conformance eliminates clearances which permit rubbin… more
Date: April 6, 1989
Creator: Zocher, R.W.
Item Type: Refine your search to only Thesis or Dissertation
open access

Nuclear reaction uncertainties in standard and non-standard cosmologies

Description: We discuss here the uncertainties in the nuclear input data relevant for calculations of standard and non-standard primordial nucleosynthesis. We show how these uncertainties can affect the predictive power of such calculations, and we identify those key nuclear reactions for which improved experimental data on the associated reaction rates is most needed. Such experimental data can lead to more accurate discriminatory tests between the differing primordial nucleosynthesis scenarios. 34 refs., … more
Date: October 6, 1989
Creator: Malaney, R.A.
Item Type: Refine your search to only Article
open access

NUMO: A new (D,T) fusion diagnostic technique

Description: A NeUtron MOnochromator, NUMO, for (D,T) fusion diagnostics is described. The monochromator consists of CH/sub 2/ (n,p) converter foil, a sector-magnet monochromator and Faraday cup detector. This system can be used to study some details of (D,T) fusion reaction history. 6 refs., 5 figs.
Date: February 6, 1989
Creator: Moran, M. J.
Item Type: Refine your search to only Report
open access

Proceedings of the Conference on technology-based confidence building: Energy and environment

Description: This document contains excerpts from the proceedings of the conference on Technology-based Confidence Building: Energy and the Environment.'' It contains the agenda for the conference and a document on Global Warming and Energy Use;'' a presentation on from Militarism to Environmentalism: a New Focus of US-Soviet Relations;'' a workshop on environmental challenges; a summary address on Science, Technology, and World Affairs;'' an address entitled Energy: the Coin of International Understanding;… more
Date: November 6, 1989
Item Type: Refine your search to only Article
open access

Pulse shaping on the Nova laser system

Description: Inertial confinement fusion requires temporally shaped pulses to achieve high gain efficiency. Recently, we demonstrated the ability to produce complex temporal pulse shapes at high power at 0.35 microns on the Nova laser system. 2 refs., 2 figs.
Date: February 6, 1989
Creator: Lawson, J. K.; Speck, D. R.; Bibeau, C.; Weiland, T. L. & Chaffee, P. H.
Item Type: Refine your search to only Article
open access

Relativity: X-ray and auger transitions of highly charged ions

Description: Many-electron QED correction is one of the unsolved problems in relativistic atomic structure calculations for many-electron systems. The accuracy of the effective-charged screening approach frequently used in the MCDF model to estimate the many-electron QED corrections is examined. The effects of relativity and configuration interaction are simultaneously important in the treatment of highly-charged ions. These effects can sometimes change the transition rates by orders of magnitude; numerous … more
Date: March 6, 1989
Creator: Chen, Mau Hsiung
Item Type: Refine your search to only Article
open access

A site oriented supercomputer for theoretical physics: The Fermilab Advanced Computer Program Multi Array Processor System (ACMAPS)

Description: The ACPMAPS multipocessor is a highly cost effective, local memory parallel computer with a hypercube or compound hypercube architecture. Communication requires the attention of only the two communicating nodes. The design is aimed at floating point intensive, grid like problems, particularly those with extreme computing requirements. The processing nodes of the system are single board array processors, each with a peak power of 20 Mflops, supported by 8 Mbytes of data and 2 Mbytes of instructi… more
Date: March 6, 1989
Creator: Nash, T.; Atac, R.; Cook, A.; Deppe, J.; Fischler, M.; Gaines, I. et al.
Item Type: Refine your search to only Article
open access

Small power plant reverse trade mission

Description: This draft report was prepared as required by Task No. 2 of the US Department of Energy, Grant No. FG07-89ID12850 Reverse Trade Mission to Acquaint International Representatives with US Power Plant and Drilling Technology'' (mission). As described in the grant proposal, this report covers the reactions of attendees toward US technology, its possible use in their countries, and an evaluation of the mission by the staff leaders. Note this is the draft report of one of two missions carried out und… more
Date: September 6, 1989
Item Type: Refine your search to only Article
open access

Thermionic converter emitter support arrangement

Description: This document discusses a support provided for use in a thermionic converter to support an end of an emitter to keep it out of contact with a surrounding collector while allowing the emitter end to move axially as its temperature changes. The emitter end is supported by a spring structure that includes a pair of Belleville springs, and the spring structure is supported by a support structure fixed to the housing that includes the collector. The support structure is in the form of a sandwich wit… more
Date: July 6, 1989
Creator: Allen, D.T.
Item Type: Refine your search to only Thesis or Dissertation
open access

Trip report, Interagency Manufacturing Operations Group (IMOG) Steering Committee meeting, November 29, 1989

Description: As the Subgroup Chairman for the Process Automation Control Technology Subgroup of IMOG, I was requested to attend the annual Steering Committee Meeting held this year at the Allied-Signal Kansas City Plant and summarize the past year's activities of the Subgroup. The next IMOG Steering Committee Meeting will be held November 14 and 15, 1990 in Los Alamos. The next Process Automation Control Technology Subgroup Meeting will be held in June, 1990 in Rocky Flats.
Date: December 6, 1989
Creator: Butterworth, R.R.
Item Type: Refine your search to only Report
open access

User computer system pilot project

Description: The User Computer System (UCS) is a general purpose unclassified, nonproduction system for Mound users. The UCS pilot project was successfully completed, and the system currently has more than 250 users. Over 100 tables were installed on the UCS for use by subscribers, including tables containing data on employees, budgets, and purchasing. In addition, a UCS training course was developed and implemented.
Date: September 6, 1989
Creator: Eimutis, E.C.
Item Type: Refine your search to only Report
open access

V-TOUGH: An enhanced version of the TOUGH code for the thermal and hydrologic simulation of large-scale problems in nuclear waste isolation

Description: The TOUGH code developed at Lawrence Berkeley Laboratory (LBL) is being extensively used to numerically simulate the thermal and hydrologic environment around nuclear waste packages in the unsaturated zone for the Yucca Mountain Project. At the Lawrence Livermore National Laboratory (LLNL) we have rewritten approximately 80 percent of the TOUGH code to increase its speed and incorporate new options. The geometry of many problems requires large numbers of computational elements elements in order… more
Date: November 6, 1989
Creator: Nitao, J. J.
Item Type: Refine your search to only Report
open access

Vibration analysis of APS magnet/support systems based on the finite element method

Description: Prediction of the dynamic response of APS magnet/support systems requires knowledge of the free vibrational characteristics, including natural frequencies, modes, and modal damping ratios. A preliminary dynamic analysis of the magnet/support system of a typical section of the APS storage ring, as presented in the APS Conceptual Design Report, was performed to gain insight. The preliminary analysis is based on the assumption that the support girder could be considered rigid relative to the stiff… more
Date: March 6, 1989
Creator: Chen, S.S. & Wambsganss, M.W.
Item Type: Refine your search to only Report
open access

Vibration analysis of APS magnet/support systems based on the finite element method

Description: Prediction of the dynamic response of APS magnet/support systems requires knowledge of the free vibrational characteristics, including natural frequencies, modes, and modal damping ratios. A preliminary dynamic analysis of the magnet/support system of a typical section of the APS storage ring, as presented in the APS Conceptual Design Report, was performed to gain insight. The preliminary analysis is based on the assumption that the support girder could be considered rigid relative to the stiff… more
Date: March 6, 1989
Creator: Chen, S. S. & Wambsganss, M. W.
Item Type: Refine your search to only Report
Back to Top of Screen