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D-0 North End Cap Calorimeter Cold Test Results

Description: The North endcap calorimeter vessel was recieved on July 1, 1990. A cooldown of the pressure vessel with liquid nitrogen was performed on July 10-11 to check the vessel's integrity. With the pressure vessel cold, the insulating vacuum was monitored for leaks. Through out the testing, the insulating vacuum remained good and the vessel passed the test. The cold test was carried out per the procedures of D-Zero engineering note 3740.220-EN-250. The test was very similar to the cold test performed … more
Date: August 2, 1990
Creator: Michael, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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D-0 South End Cap Calorimeter Cold Test Results

Description: The South endcap calorimeter vessel was moved into Lab A on Sept. 18, 1990. A cooldown of the pressure vessel with liquid nitrogen was performed on Sept. 26 to check the vessel's integrity. With the pressure vessel cold, the insulating vacuum was monitored for leaks. Through out the testing, the insulating vacuum remained good and the vessel passed the test. The cold test was carried out per the procedures of D-Zero engineering note 3740.220-EN-250. The test was very similar to the cold test pe… more
Date: November 26, 1990
Creator: Rucinski, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A 1. 5--4 Kelvin detachable cold-sample transfer system: Application to inertially confined fusion with spin-polarized hydrogens fuels

Description: A compact cold-transfer apparatus for engaging and retrieving samples at liquid helium temperatures (1.5--4K), maintaining the samples at such temperatures for periods of hours, and subsequently inserting them in diverse apparatuses followed by disengagement, is described. The properties of several thermal radiation-insulating shrouds, necessary for very low sample temperatures, are presented. The immediate intended application is transportable target-shells containing highly spin-polarized deu… more
Date: January 1, 1990
Creator: Alexander, N.; Barden, J.; Fan, Q. & Honig, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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2-D Axisymmetric Line Transport

Description: The methods used in the ALTAIR code for computing the transfer of spectral line radiation in two-dimensional axially-symmetric geometry are described. ALTAIR uses a variable-Eddington-tensor approach, in which the transfer equation of non-coherent line scattering is written in moment form, and the moments are closed with an assumed tensor relating the monochromatic pressure tensor and energy density; this Eddington tensor is obtained self-consistently using an accurate angle-dependent solution … more
Date: November 20, 1990
Creator: Castor, John I.; Dykema, Pieter G. & Klein, Richard I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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2 MW 110 GHz ECH heating system for DIII-D

Description: A 2 MW 110 GHz ECH system using Varian 0.5 MW gyrotrons is under construction for use on the DIII-D tokamak by late 1991. Most of the components are being design and fabricated at General Atomics, including the gyrotron tanks, superconducting magnets, and transmission line. These components are intended for operation with 10 second pulses and, in the future, with 1 MW gyrotrons. 6 refs., 5 figs.
Date: September 1990
Creator: Moeller, C.; Prater, R.; Callis, R.; Remsen, D.; Doane, J.; Cary, W. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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3-D computer simulations of EM fields in the APS vacuum chamber: Part 1, Frequency-domain analysis

Description: The vacuum chamber proposed for the storage ring of the 7-GeV Advanced Photon Source (APS) basically consists of two parts: the beam chamber and the antechamber, connected to each other by a narrow gap. A sector of 1-meter-long chamber with dosed end plates, to which are attached the 1-inch-diameter beampipes centered at the beam chamber, has been built for experimental purposes. The 3-D code MAFIA has been used to simulate the frequency-domain behaviors of EM fields in this setup. The results … more
Date: September 4, 1990
Creator: Chou, W. & Bridges, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

3-D Depth Migration via McClellan Transformations

Description: Three-dimensional seismic wavefields may be extrapolated in depth, one frequency at a time, by two-dimensional convolution with a circularly symmetric, frequency- and velocity-dependent filter. This depth extrapolation, performed for each frequency independently, lies at the heart of 3-D finite-difference depth migration. The computational efficiency of 3-D depth migration depends directly on the efficiency of this depth extrapolation. McClellan transformations provide an efficient method for b… more
Date: 1990~
Creator: Hale, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

3 Dimensional radiation transport in dispersive media

Description: In plasmas the collective motion of free electrons affects the propagation of radiation by bending the light ray trajectory. The closer the light wave frequency is to the electron plasma frequency in value, the more pronounced the effect. We will present the results of radiation transport calculations in 3 spatial dimensions in the refractive plasma environment and compare the calculation to one done where the ray bending has been neglected (straight line ray paths). We also present the numeric… more
Date: November 1, 1990
Creator: Mayle, R.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department

3 pièces pour double basse et bande

Description: Recording of Orlando Jacinto Garcia's 3 pièces pour double basse et bande. Was written for bassist Robert Black and completed in the summer of 1990. The tape part was made using the bass player's recordings of brief musical pieces (i.e. tremolos, harmonics...) which were then digitized by the composer, sometimes transforming and mixing the material in layers of sound. The second of the three pieces is characteristic of a genre of glissandos, register changes, and also long holds both on tape an… more
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: 1990
Duration: 12 minutes 50 seconds
Creator: García, Orlando Jacinto
Item Type: Refine your search to only Sound
Partner: UNT Music Library
open access

A 4. pi. tracking TPC magnetic spectrometer for RHIC

Description: The primary physics objective of the 4{pi} TPC magnetic spectrometer proposal is to search for the Quark-Gluon Plasma. In previous workshops we have discussed what the possible hadronic signatures of such a state of matter would be. Succinctly, the QGP is a direct prediction of non-perturbative QCD. Therefore the question of the existence of this new state of matter bears directly on the validity of non-perturbative QCD. However, since non-perturbative QCD has never been established, it is appa… more
Date: January 1, 1990
Creator: Danby, G.; Eiseman, S. E.; Etkin, A.; Foley, K. J.; Hackenburg, R. W.; Longacre, R. S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A 5-cm dipole for the SSC-DE-1

Description: A 5cm SSC superconducting dipole that develops 6.6 tesla at 5790 A is proposed. The two layer magnet has 12% more transfer function than the present design as a result of using thin collars and close in'' iron. The thin collars provide precise positioning of the coils; they also provide minimum prestress (perhaps 2000 psi) as aid for magnet assembly. A welded skin around the iron provides the final prestress and shapes and the coil geometry. A prestressed aluminum bar placed between the vertica… more
Date: April 30, 1990
Creator: Caspi, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A 15 MeV proton diagnostic for DIII-D

Description: A 15 MeV proton diagnostic that is patterned after the ASDEX proton probe is presently being fabricated for the DIII-D tokamak. A bellows assembly inserts a silicon detector into the vacuum for plasma operation and retracts it for baking. The detector preamplifier is situated in a reentrant tube (at atmosphere) beside the detector; electrically, the whole assembly is referenced to vessel potential. Orbit calculations in realistic magnetic field geometries predict a proton detection efficiency o… more
Date: October 1, 1990
Creator: Duong, Hau & Heidbrink, W.W. (California Univ., Irvine, CA (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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24 Hour pumping test of production well 905-120P

Description: As part of the Savannah River Site (SRS) Aquifer Characterization Program, the Environmental Sciences Section (ESS) of the Savannah River Laboratory (SRL) is attempting to determine the water transmitting characteristics of the different aquifer units underlying the SRS by conducting single well pumping tests on wells installed as part of the SRS Baseline Hydrogeologic Investigation. In April 1990, while performing the single well pumping test, an opportunity became available to collect data on… more
Date: December 1, 1990
Creator: Bledsoe, H.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

24 Hour pumping test of production well 905-120P

Description: As part of the Savannah River Site (SRS) Aquifer Characterization Program, the Environmental Sciences Section (ESS) of the Savannah River Laboratory (SRL) is attempting to determine the water transmitting characteristics of the different aquifer units underlying the SRS by conducting single well pumping tests on wells installed as part of the SRS Baseline Hydrogeologic Investigation. In April 1990, while performing the single well pumping test, an opportunity became available to collect data on… more
Date: December 1, 1990
Creator: Bledsoe, H. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A 40 mm bore quadrupole magnet for the SSC

Description: A 40 mm bore quadrupole magnet design, called QC'', has been made for the SSC with the following parameters: 208 T/m gradient at 6500A, 2-layer cos 2 {theta}'' winding arrangement with 30 strand cable and one spacer wedge per coil. Structural support is provided by self-supporting interlocking collars; two types of symmetrical laminations are pre-assembled into collar packs for ease of assembly. This paper will describe the design of a prototype quadrupole magnet for the SSC and preliminary tes… more
Date: September 1, 1990
Creator: Taylor, C.E.; Barale, P.; Caspi, S.; Dell'Orco, D.; Fritz, D.; Gilbert, W.S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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50 kA, 50 kV DC international and switching systems for the Los Alamos ZTH experiment

Description: Los Alamos National Laboratory has completed the engineering design and development for the high power electrical switching networks for the ZTH experiment. ZTH is Reversed Field Pinch (RFP) plasma experiment with a 4 MA plasma current capability. Power to the ohmic heating (OH), equilibrium field (EF), and toroidal field (TF) coils will be provided from a 1.43 GVA turbo-alternator, which has over 600 MJ of extractable energy. The DC interrupting switch will handle 2.4 GVA, 150 MJ during initia… more
Date: January 1, 1990
Creator: Reass, W. A.; Cordova, R. J. & Garcia, J. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department

90-208, Voyager

Description: Light shades of pinkish grays create the background juxtaposed with linear pattern and layered with small multi-hued geometric shapes and a linear drawing of a ship and silhouettes of two figures.
Date: 1990
Creator: Falsetta, Vincent
Item Type: Refine your search to only Artwork
Partner: UNT College of Visual Arts + Design
open access

A 250-GHz CARM (Cyclotron Auto Resonance Maser) oscillator experiment driven by an induction linac

Description: A 250-GHz Cyclotron Auto Resonance Maser (CARM) oscillator has been designed and constructed and will be tested using a 1-kA, 2-MeV electron beam produced by the induction linac at the Accelerator Research Center (ARC) facility of Lawrence Livermore National Laboratory (LLNL). The oscillator circuit was made to operate in the TE{sub 11} mode at ten times cutoff using waveguide Bragg reflectors to create an external cavity Q of 8000. Theory predicts cavity fill times of less than 30 ns (pulse le… more
Date: September 14, 1990
Creator: Caplan, M.; Kulke, B.; Bubp, D.G. (Lawrence Livermore National Lab., CA (USA)); McDermott, D. & Luhmann, N. (California Univ., Los Angeles, CA (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department

311 South Wacker

Description: The view of the skyscraper at 311 South Wacker street in Chicago is shown near the Sears Tower. All 65 stories of the building are visible.
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: 1990
Creator: Kohn Pederson Fox Associates
Item Type: Refine your search to only Physical Object
Location: 41.877456 -87.635963
Partner: UNT College of Visual Arts + Design

311 South Wacker

Description: The upper half of the skyscraper is shown in this view. The building is light in color and composed of several vertical elements.
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: 1990
Creator: Kohn Pederson Fox Associates
Item Type: Refine your search to only Physical Object
Location: None
Partner: UNT College of Visual Arts + Design
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