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3,884 Matching Results

Start Over Partner UNT Libraries Government Documents Department Decade 1980-1989 Month March

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(open access)

Design of a pulsed switching magnet for the Bevalac

The design and construction of a water cooled, pulsed, laminated core dipole magnet which has recently been installed at the Bevalac is described. This new, energy efficient magnet was funded by the DOE In-House Energy Management Program. The magnet has been specifically designed for maximum efficiency in power utilization and has replaced two dc powered magnets in the Bevalac switchyard. It will reduce energy usage by 747 MWh/yr, and it provides the capability of pulse-to-pulse switching in 0.7 seconds between two major beamline channels serving the nuclear science and radiotherapy programs at the /Bevalac. A unique feature of this magnet is the core design which utilizes an external structure that remains integral with the core laminations after assembly. The structure provides for both torsional and longitudinal rigidity of the core while also facilitating the precision assembly and compression of the core laminations without the use of special assembly fixtures. 2 refs., 4 figs., 1 tab.

Date: March 1, 1989

Creator: Abbott, S.; Alonso, J.; Brown, J.; Kalnins, J.; Krebs, G. & Reimers, R.

Object Type: Article

System: The UNT Digital Library

(open access)

Mechanical design of a large bore quadrupole triplet magnet

The mechanical design and construction of a 1 meter bore, low gradient quadrupole triplet is described. The magnet will be used for focussing a proton beam in accelerator studies of neutral particle at the Los Alamos National Laboratory. A significant feature of this magnet design is the precision location of the coil conductors within the steel yoke tube. Each of the quadrupole coils have been fabricated from water cooled aluminum conductor, wound in a cosine 2-theta geometry. The conductor bundles have been wound to a positional accuracy within +-0.050 cm which was required to reduce the harmonic content to less than 0.04% of the quadrupole field. Important aspects of the design, construction and assembly are described.

Date: March 1, 1987

Creator: Abbott, S.; Caylor, R.; Fong, E. & Tanabe, J.

Object Type: Article

System: The UNT Digital Library

(open access)

Design of an integrally formed RFQ

The design, construction and testing of a 410 MHz RFQ utilizing a new mechanical design concept has been completed at LBL. The RFQ is planned to be used at the Bevatron for injecting protons into the present heavy ion linac. The integral vane-cavity construction is a significant and unique feature of this RFQ design, wherein four walls with integral vanes are assembled to form the RFQ geometry. This design concept provides the capability of achieving precision vane alignment in minimal assembly time with no adjustments required. The design concept including material selection, plating, vacuum seal design, assembly and testing are described. 4 refs., 4 figs., 1 tab.

Date: March 1, 1989

Creator: Abbott, S.; Caylor, R.; Gough, R.; Howard, D.; MacGill, R. & Staples, J.

Object Type: Article

System: The UNT Digital Library

(open access)

Mechanical design of a heavy-ion RFQ

The mechanical design and construction of a 199.3 MHz heavy ion RFQ for charge states q/A as low as 0.14 is described. The vane supports and positioning adjustments are significant features of this design. They provide the capability of achieving the precision vane alignment required. The maximum difference between calculated and measured apertures between the vanes is 0.0035 inches, and the average difference is 0.0010 inches. Various important aspects of the design and construction including material selection and plating, RF joints, thermal loading and vacuum system are described. Assembly techniques, methods of mechanical measurement, alignment and structure stability are discussed in detail.

Date: March 1, 1983

Creator: Abbott, S.; MacGill, R. & Yourd, R.

Object Type: Article

System: The UNT Digital Library

(open access)

Engineering evaluation of the proposed boiler addition for Minnegasco Energy Center, Minneapolis, Minnesota. Final draft report

The results are reported of a technical evaluation of alternate fuels for the proposed oil and natural gas fired No. 3 boiler at the Minnegasco Energy Center (MEC) located in Minneapolis, Minnesota. This report has been prepared for the Department of Energy, Office of Fuels Conversion for their use in considering an alternate fuel exemption petition submitted by MEC. The fuels considered for the proposed boiler include oil, natural gas, bituminous coal, petroleum coke/coal mixture, refuse-derived fuel (RDF), coal-oil mixtures, and coal/oil dual fuel fired. The purchase of steam from the Northern States Power Company (NSPCo) was also considered as an alternative to construction of another boiler at MEC. Evaluation of each fuel included review of the overall plant design, estimates of capital and O and M costs, salvage value, useful life, and quantities of solid waste produced. The MEC supplies steam and chilled water to the downtown Minneapolis area for building heating and cooling using two presently owned and operated 200,000 lb/h oil/natural gas fired boilers. If the proposed boiler is permitted to burn oil and natural gas, it will be identical in design to the existing boilers. The evaluation showed that the use of oil, natural gas, coal, …

Date: March 16, 1981

Creator: Abendroth, H.R. & Poon, A.

Object Type: Report

System: The UNT Digital Library

(open access)

Experience in using workstations as hosts in an accelerator control environment

A new control system has been used for light ion acceleration at the Alternating Gradient Synchrotron (AGS). The control system uses Apollo workstations in the dual role of console hardware computer and controls system host. It has been found that having a powerful dedicated CPU with a demand paging virtual memory OS featuring strong interprocess communication, mapped memory shared files, shared code, and multi-window capabilities, allows us to provide an efficient operation environment in which users may view and manage several control processes simultaneously. The same features which make workstations good console computers also provide an outstanding platform for code development. The software for the system, consisting of about 30K lines of ''C'' code, was developed on schedule, ready for light ion commissioning. System development is continuing with work being done on applications programs.

Date: March 1, 1987

Creator: Abola, A.; Casella, R.; Clifford, T.; Hoff, L.; Katz, R.; Kennell, S. et al.

Object Type: Article

System: The UNT Digital Library

[Appendix D: Analytic Data (Color Photographs)]

Color photographs of representative thin sections of cutting samples and cores examined for the Missoula/Bitterroot Drilling Project using a petrographic microscope in order to identify major mineral constituents

Date: March 1981

Creator: Abramiuk, I. Nicholas

Object Type: Photograph

System: The UNT Digital Library

(open access)

A Summary Geologic Report on the Missoula/Bitterroot Drilling Project, Missoula/Bitterroot Basins, Montana

A report discussing a drilling project with the objective of obtaining information to assess the favorability of the Tertiary sedimentary units in the Missoula and Bitterroot Valleys for uranium potential.

Date: March 1981

Creator: Abramiuk, I. Nicholas

Object Type: Report

System: The UNT Digital Library

(open access)

Finite Temperature Instability for Compactification

We consider finite temperature effects upon theories with extra dimensions compactified via vacuum stress energy (Casimir) effects. For sufficiently high temperature, a static configuration for the internal space is impossible. At somewhat lower temperatures, there is an instability due to thermal fluctuations of radius of the compact dimensions. For both cases, the Universe can evolve to a de Sitter-like expansion of all dimensions. Stability to late times constrains the initial entropy of the universe. 28 refs., 1 fig., 2 tabs.

Date: March 1, 1986

Creator: Accetta, F. S. & Kolb, E. W.

Object Type: Report

System: The UNT Digital Library

(open access)

Stable Compactifications

We show that compactifications of theories with extra dimensions are unstable if due to monopole configurations of an antisymmetric tensor field balanced against one-loop Casimir corrections. In the case of ten dimensional supergravity, it is possible, at least for a portion of the phase space, to achieve a stable compactification without fine-tuning by including the contribution of fermionic condensates to the monopole configurations. 23 refs., 2 figs.

Date: March 1, 1986

Creator: Accetta, F. S.; Gleiser, M.; Holman, R. & Kolb, E. W.

Object Type: Report

System: The UNT Digital Library

(open access)

Small Sample Assay Station users guide

A system for acquisition of delayed neutron data, based on an LSI-11 with 28 K words of memory, is described. Hardware features are a six-channel scaler and level sensor to determine the state of the experiment; and normal peripherals include dual floppy-disk drive, line printer, and CRT terminal. The software for experiment control and for the analysis of data is presented. The protocol for assays that optimally utilize the system is suggested.

Date: March 1, 1981

Creator: Adams, E.L.; Bourret, S. & Meier, M.M.

Object Type: Report

System: The UNT Digital Library

(open access)

Action description memorandum for the FY 1992 line item: Environmental, Safety and Health Upgrades, Phase 4, Site Drainage Control

This ADM documents the evaluation of the potential environmental impact hazards from the Environmental, Safety and Health Upgrades, Phase 4, Site Drainage Control Project.

Date: March 1, 1989

Creator: Adams, F. S. & Hunter, M. R.

Object Type: Report

System: The UNT Digital Library

(open access)

Action Description Memorandum for the FY 1989 Line Item: Environmental, Safety and Health Upgrades, Phase 2

This ADM documents the evaluation of the potential environmental impact hazards from the Environmental, Safety and Health Upgrades, Phase 2, project. Environmental, Safety and Health Upgrades, Phase 2, project is a $6,500,000 Line Item project for FY 1989. ES and H Phase 2, is a portion of a continuing effort to protect the environment, neighbors and employees from any adverse effects caused by the development and production missions of EG and G Mound Applied Technologies. The three parts of ES and H Phase 2 include: (A) new piping to separate potable water from domestic and process water; (B) improvements in explosive storage facilities; and (C) upgrades of the fuel oil storage systems, including a new tank, the containment basin, and dike.

Date: March 1, 1989

Creator: Adams, Frank S.; Hunter, Michael R. & Anderson, Carol R.

Object Type: Report

System: The UNT Digital Library

(open access)

Sodium oxide and uranium oxide aerosol experiments: NSPP Tests 106-108 and Tests 204-207, data record report

This data record report describes three sodium oxide aerosol tests and four uranium oxide aerosol tests conducted in the Nuclear Safety Pilot Plant project at Oak Ridge National Laboratory. The goal of this project is to establish the validity (or level of conservatism) of the aerosol behavioral code, HAARM-3, and follow-on codes under development at the Battelle Columbus Laboratories for the US Nuclear Regulatory Commission. Descriptions of the seven tests with tables and graphs summarizing the results are included. 92 figs.

Date: March 1, 1981

Creator: Adams, R. E.; Kress, T. S. & Tobias, M. L.

Object Type: Report

System: The UNT Digital Library

(open access)

Environmental Transport Division. 1980 report

Aquatic, atmospheric, and terrestrial studies and instrumentation developments are described in a series of articles. More details about specific studies are given in publications listed at the end of the report.

Date: March 1, 1981

Creator: Adams, S.E.; Fliermans, C.B.; Garrett, A.J. & Halverson, J.E.

Object Type: Report

System: The UNT Digital Library

(open access)

CsAlSi/sub 5/O/sub 12/: a possible host for /sup 137/Cs immobilization

CsAlSi/sub 5/O/sub 12/ exhibits more acid resistance than pollucite (CsAlSi/sub 2/O/sub 6/). At pH values of 1.02 and 1.40, the extraction of Cs from CsAlSi/sub 5/O/sub 12/ at 25/sup 0/C was approximately proportional to the square root of leach time. The Cs extraction at 25/sup 0/C varied as (H/sup +/)/sup 0/ /sup 36/ over the pH range of 1 to 6. Also, the Cs extraction in various brines at 300/sup 0/C/30 MPa was comparable with that for pollucite. CsAlSi/sub 5/O/sub 12/ can be crystallized at about 1000/sup 0/C from calcines if a small amount of CaO is present, but in the absence of such sintering acids, crystallization temperatures of about 1400/sup 0/C are necessary. Compatibility data were also obtained with respect to several other phases with which CsAlSi/sub 5/O/sub 12/ might be expected to coexist in tailored ceramics designed for high-level defense waste.

Date: March 31, 1982

Creator: Adl, T. & Vance, E.R.

Object Type: Report

System: The UNT Digital Library

(open access)

Some concepts of favorability for world-class-type uranium deposits in the northeastern United States

An account is given of concepts of favorability of geologic environments in the eastern United States for uranium deposits of several major types existing elsewhere in the world. The purpose is to convey some initial ideas about the interrelationships of the geology of the eastern United States and the geologic settings of certain of these world-class deposits. The study and report include consideration of uranium deposits other than those generally manifesting the geologic, geochemical and genetic characteristics associated with the conventional sandstone-type ores of the western United States.

Date: March 1, 1981

Creator: Adler, H.H.

Object Type: Report

System: The UNT Digital Library

(open access)

Beam-based alignment technique for the SLC (Stanford Linear Collider) linac

Misalignment of quadrupole magnets and beam position monitors (BPMs) in the linac of the SLAC Linear Collider (SLC) cause the electron and positron beams to be steered off-center in the disk-loaded waveguide accelerator structures. Off-center beams produce wakefields which limit the SLC performance at high beam intensities by causing emittance growth. Here, we present a general method for simultaneously determining quadrupole magnet and BPM offsets using beam trajectory measurements. Results from the application of the method to the SLC linac are described. The alignment precision achieved is approximately 100 ..mu..m, which is significantly better than that obtained using optical surveying techniques. 2 refs., 4 figs.

Date: March 1, 1989

Creator: Adolphsen, C. E.; Lavine, T. L.; Atwood, W. B.; Himel, T. M.; Lee, M. J.; Mattison, T. S. et al.

Object Type: Article

System: The UNT Digital Library

(open access)

ACTVE News, Volume 11, Number 3, March 1980

Newsletter issued by the Advisory Council for Technical-Vocational Education in Texas discussing news, events, and other relevant information related to technical and vocational education for adults in Texas.

Date: March 1980

Creator: Advisory Council for Technical-Vocational Education in Texas

Object Type: Journal/Magazine/Newsletter

System: The Portal to Texas History