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A 1.8 K test facility for superconducting RF cavities

Description: To demonstrate the feasibility of superconducting RF technology for a high energy e{sup +}/e{sup {minus}} collider, a research and development program has begun with collaborators from Europe, Asia, and North America. The immediate goal of the R&D program is to build and operate a 50 meter-long linac at DESY with 1.3 GHz superconducting RF cavities at a temperature of 1.8 K - 2.0 K and an accelerating gradient of 15 MV/meter. The refrigeration for the test system at DESY initially will have a c… more
Date: April 1, 1994
Creator: Horlitz, G.; Knopf, U.; Lange, R.; Petersen, B.; Sellmann, D.; Trines, D. et al.
Item Type: Refine your search to only Article
open access

1/12-Scale scoping experiments to characterize double-shell tank slurry uniformity: Test plan

Description: Million gallon double-shell tanks (DSTs) at Hanford are used to store transuranic, high-level, and low-level wastes. These wastes generally consist of a large volume of salt-laden solution covering a smaller volume of settled sludge primarily containing metal hydroxides. These wastes will be retrieved and processed into immobile waste forms suitable for permanent disposal. The current retrieval concept is to use submerged dual-nozzle pumps to mobilize the settled solids by creating jets of flui… more
Date: October 1994
Creator: Bamberger, J. A. & Liljegren, L. M.
Item Type: Refine your search to only Report
open access

1-Dimensional simulation of thermal annealing in a commercial nuclear power plant reactor pressure vessel wall section

Description: The objective of this work was to provide experimental heat transfer boundary condition and reactor pressure vessel (RPV) section thermal response data that can be used to benchmark computer codes that simulate thermal annealing of RPVS. This specific protect was designed to provide the Electric Power Research Institute (EPRI) with experimental data that could be used to support the development of a thermal annealing model. A secondary benefit is to provide additional experimental data (e.g., t… more
Date: November 1, 1994
Creator: Nakos, J. T.; Rosinski, S. T. & Acton, R. U.
Item Type: Refine your search to only Report
open access

2-D Tomography With Bolometry in DIII-D

Description: We have installed a 48-channel platinum-foil bolometer system on DIII-D achieve better spatial and temporal resolution of the radiated power in diverted discharges. Two 24-channel arrays provide complete plasma coverage with optimized views of the divertor. We have measured the divertor radiation profile for a series of radiative divertor and power balance experiments. We observe a rapid change in the magnitude and distribution of divertor radiation with heavy gas puffing. Unfolding the radiati… more
Date: July 1, 1994
Creator: Leonard, A. W.; Meyer, W. H.; Geer, B.; Behne, D. M. & Hill, D. N.
Item Type: Refine your search to only Article
open access

3-D subsurface modeling within the framework of an environmental restoration information system: Prototype results using earthvision

Description: As a result of the DOE Oak Ridge Reservation (DOE-ORR) placement on the EPA Superfund National Priorities List in December of 1989, all remedial activities, including characterization, remedial alternatives selection, and implementation of remedial measures, must meet the combined requirements of RCRA, CERCLA, and NEPA. The Environmental Restoration Program, therefore, was established with the mission of eliminating or reducing to prescribed safe levels the risks to the environment or to human … more
Date: December 31, 1994
Creator: Goeltz, R. T. & Zondlo, T. F.
Item Type: Refine your search to only Article
open access

3-D TECATE/BREW: Thermal, stress, and birefringent ray-tracing codes for solid-state laser design

Description: This report describes the physics, code formulations, and numerics that are used in the TECATE (totally Eulerian code for anisotropic thermo-elasticity) and BREW (birefringent ray-tracing of electromagnetic waves) codes for laser design. These codes resolve thermal, stress, and birefringent optical effects in 3-D stationary solid-state systems. This suite of three constituent codes is a package referred to as LASRPAK.
Date: July 20, 1994
Creator: Gelinas, R. J.; Doss, S. K. & Nelson, R. G.
Item Type: Refine your search to only Report
open access

A 3-D time-dependent unstructured tetrahedral-mesh SP{sub N} method

Description: We have developed a 3-D time-dependent multigroup SP{sub n} method for unstructured tetrahedral meshes. The SP{sub n} equations are expressed in a canonical form which allows them to be solved using standard diffusion solution techniques in conjunction with source iteration, diffusion-synthetic acceleration, and fission-source acceleration. A computational comparison of our SP{sub n} method with an even-parity S{sub n} method is given.
Date: October 1, 1994
Creator: Morel, J. E.; McGhee, J. M. & Larsen, E. W.
Item Type: Refine your search to only Article
open access

3-D Turbulent Particle Dispersion Submodel Development. Quarterly Progress Report No. 3, October 15, 1991--January 15, 1992

Description: Many practical combustion processes which use solid particles, liquid droplets, or slurries as fuels introduce these fuels into turbulent environments. Examples include spray combustion, pulverized coal and coal slurry combustion, fluidized beds, sorbent injection, and hazardous waste incineration. The interactions of the condensed phases with turbulent environments have not been well described. Such a description is complicated by the difficulty of describing turbulence in general, even in the… more
Date: September 1, 1994
Creator: Smith, P. J.
Item Type: Refine your search to only Report
open access

3-D turbulent particle dispersion submodel development. Quarterly progress report No. 4, January 15, 1992--April 15, 1992

Description: Many practical combustion processes which use solid particles, liquid droplets, or slurries as fuels introduce these fuels into turbulent environments. Examples include spray combustion, pulverized coal and coal slurry combustion, fluidized beds, sorbent injection, and hazardous waste incineration. The interactions of the condensed phases with turbulent environments have not been well described. Such a description is complicated by the difficulty of describing turbulence in general, even in the… more
Date: September 1, 1994
Creator: Smith, P. J.
Item Type: Refine your search to only Report
open access

4 MW Fast Wave Current Drive Upgrade for DIII-D

Description: The DIII-D program has just completed a major addition to its ion cyclotron range of frequency (ICRF) systems. This upgrade project added two new fast wave current drive (FWCD) systems, with each system consisting of a 2 MW, 30 to 120 MHz transmitter, ceramic insulated transmission lines and tuner elements, and water-cooled four-strap antenna. With this addition of 4 MW of FWCD power to the original 2 MW, 30 to 60 MHz capability, experiments can be performed that will explore advanced tokamak p… more
Date: September 1, 1994
Creator: Callis, R. W.; Cary, W. P. & Baity, F. W.
Item Type: Refine your search to only Article
open access

5 MW pulsed spallation neutron source, Preconceptual design study

Description: This report describes a self-consistent base line design for a 5 MW Pulsed Spallation Neutron Source (PSNS). It is intended to establish feasibility of design and as a basis for further expanded and detailed studies. It may also serve as a basis for establishing project cost (30% accuracy) in order to intercompare competing designs for a PSNS not only on the basis of technical feasibility and technical merit but also on the basis of projected total cost. The accelerator design considered here i… more
Date: June 1, 1994
Item Type: Refine your search to only Report
open access

8. annual national conference of black physics students -- A summary report

Description: The primary goals of the conference were to: (1) Develop a peer/mentor network within the African-American physics community; (2) Inform African-American students in physics of the various academic and professional opportunities; and (3) Bring important academic, economic and political issues and developments in the field to the attention of the students. The conference program was designed to fulfill these goals and optimize the students` exposure to physics as a professional and its real-life… more
Date: December 31, 1994
Creator: Valk, H.S.
Item Type: Refine your search to only Article
open access

An 8-meter-long coupled cavity RFQ linac

Description: A model has been constructed of an 8-m-long high energy (7 MeV) Radio-Frequency Quadrupole (RFQ) to prove the concept of a resonantly coupled RFQ. The model consists of four 2-in-long RFQ segments resonantly coupled together. A small gap (3 mm) between the vane tips, at the segment joints, provides capacitive coupling. This model is of a RFQ designed for a proposed Los Alamos Accelerator Performance Demonstration Facility (APDF). The RFQ, as designed, will operate cw at 350 kHz and accelerate a… more
Date: September 1, 1994
Creator: Young, L. M.
Item Type: Refine your search to only Article
open access

A 10 GHz BANDWIDTH, SINGLE TRANSIENT, DIGITIZED OSCILLOSCOPE WITH 20 GHz CAPABILITY

Description: EG&G/EM has developed an oscilloscope with a {minus}3 dB bandwidth greater than 10 GHz. Its rolloff characteristics are such that single-transient data greater than 20 GHz may be captured. A demountable CCD camera records the oscilloscope trace and is provided with PC-compatible capture and data processing software. The capabilities of the oscilloscope, camera, and its processing software are described and examples of the system`s performance is shown.
Date: January 24, 1994
Creator: Hudson, C. L.; Kocimski, S. M.; Spector, J.; Thomas, J. B. & Woodstra, R. R.
Item Type: Refine your search to only Article
open access

10{times} reduction imaging at 13.4nm

Description: A Schwarzschild imaging system has been designed to achieve 0.1 {mu}m resolution in a 0.4 mm diameter field of view when operated at a center wavelength of 13.4 nm. A decentered aperture is located on the convex primary resulting in an unobstructed numerical aperture of 0.08 and a corresponding depth of field of {plus_minus} 1 {mu}m. The Schwarzschild imaging objective is part of a five-reflection system containing the laser plasma source (LPS), condensing optics, turning mirror and reflection … more
Date: August 1, 1994
Creator: Tichenor, D. A.; Kubiak, G. D. & Malinowski, M. E.
Item Type: Refine your search to only Article
open access

A 10 um Resolution Secondary Emission Monitor for Fermilab's Targeting Station

Description: Improvement in focusing the proton beam onto the antiproton production target necessitates the development of a higher resolution beam profile monitor. Two designs for the construction of a multiwire profile mointor grid are presented. The first is a conventional strung and tensioned Ti wire design. The second is a photo etched Ti grid of wires bonded to a ceramic substrate. Both have a central wire spacing of 125 {mu}m. The completed beam profile monitors are designed to operate in a 120 GeV b… more
Date: January 1, 1994
Creator: Hurh, P.; O'Day, S.; Dombrowski, R. & Page, T.
Item Type: Refine your search to only Report
open access

The 12-GeV/c beam transfer and absorber lines for the Superconducting Super Collider

Description: The beam optics of the 12-GeV/c proton beam transfer line between the Low Energy Booster (LEB) and the Medium Energy Booster (MEB) at the Superconducting Super Collider is presented. The beam is extracted from the LEB vertically and is injected into the MEB through a vertical Lambertson magnet and a horizontal kicker. The beamline has high flexibility for amplitude and dispersion function matching. Effects of various errors in the transfer line are studied, and a beam position correction scheme… more
Date: August 1, 1994
Creator: Mao, N.; McGill, J.; Gerig, R. & Brown, K.
Item Type: Refine your search to only Report
open access

24-th Order high temperature expansion for the 3-d Ising model

Description: The authors present the series for the free energy and their estimate for the critical exponent {alpha}, as computed by a recursive bookkeeping algorithm on the CM5. They begin with a discussion of the algorithm to compute the High-Temperature expansion on finite 3-D Ising lattices.
Date: December 1, 1994
Creator: Glaessner, U.; Schilling, K.; Bhanot, G. & Creutz, M.
Item Type: Refine your search to only Article
open access

25-ps neutron detector for measuring ICF-target burn history

Description: We have developed a fast, sensitive neutron detector for recording the fusion reaction-rate history of inertial-confinement fusion (ICF) experiments. The detector is based on the fast rise-time of a commercial plastic scintillator (BC-422) and has a response < 25 ps FWHM. A thin piece of scintillator material acts as a neutron-to-light converter. A zoom lens images scintillator light to a high-speed (15 ps) optical streak camera for recording. A retractable nose cone positions the scintillator … more
Date: May 2, 1994
Creator: Lerche, R. A.; Phillion, D. W. & Tietbohl, G. L.
Item Type: Refine your search to only Article
open access

A 40 GByte/s read-out system for GEM

Description: The preliminary design of the read-out system for the GEM (Gammas, Electrons, Muons) detector at the Superconducting Super Collider is presented. The system reads all digitized data from the detector data sources at a Level 1 trigger rate of up to 100 kHz. A total read-out bandwidth of 40 GBytes/s is available. Data are stored in buffers that are accessible for further event filtering by an on-line, processor farm. Data are transported to the farm only as they are needed by the higher-level tri… more
Date: April 1994
Creator: Bowden, M.; Carrel, J.; Dorenbosch, J. & Kapoor, V.
Item Type: Refine your search to only Report
open access

45-Day deliverable for Tank 241-BX-105 Auger samples, risers 2 and 6

Description: Two auger samples from single-shell tank 241-BX-105 (BX-105) were extruded, broken down, and analyzed for DSC, TGA, and total alpha as prescribed. Analytical results were tracked and reported using the laboratory information management system known as LabCore. This is the final report for the fiscal year 1995 BX-105 auger sample characterization effort. Included are copies of the differential scanning calorimetry (DSC) and thermogravimetric analyses (TGA) scans as requested. Also included is a … more
Date: November 16, 1994
Creator: Bell, K. E.
Item Type: Refine your search to only Report
open access

45-Day safety screen results for single shell tank 241-AP-106, liquid grab samples, riser 1, 30{degrees} and 150{degrees} in conjunction with evaporator campaign 95-1

Description: This is the 45-Day report for the fiscal year 1995 safety screening characterization of three liquid grab samples from single shell tank 241-AP-106. The required analyses are differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA) and appearance (APPR). No analytes exceeded the notification limits, therefore, secondary analyses (RSST, cyanide, and hot persulfate-total organic carbon) were not required. Summary data tables 2, 3 and 4 present the appearance, DSC and TGA data, … more
Date: December 14, 1994
Creator: Miller, G. L.
Item Type: Refine your search to only Report
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