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Notes on Luminosity Variation at ISABELLE

Description: In the present ISABELLE design, the luminosity at each insertion will be the same, unless special efforts are taken to get a low-..beta.. insertion or reduced crossing angle. These can only change the luminosity by factors of 2 to 4 from insertion to insertion. An estimation of the range of desired luminosities is given.
Date: October 19, 1977
Creator: Herrera, J. C.; Marx, M.; Roe, B. & Rosenberg, E. I.
Partner: UNT Libraries Government Documents Department
open access

Tokamak Fusion Test Reactor neutral beam injection system vacuum chamber

Description: Most of the components of the Neutral Beam Lines of the Tokamak Fusion Test Reactor (TFTR) will be enclosed in a 50 cubic meter box-shaped vacuum chamber. The chamber will have a number of unorthodox features to accomodate both neutral beam and TFTR requirements. The design constraints, and the resulting chamber design, are presented.
Date: October 19, 1977
Creator: Pedrotti, L.R.
Partner: UNT Libraries Government Documents Department
open access

Ion-beam inertial fusion: the requirements posed by target and deposition physics

Description: The demonstration of ICF scientific feasibility requires success in target design, driver development and target fabrication. Since these are interrelated, we present here some results of ion beam target studies and relate them to parameters of interest to ion accelerators. Ion deposition physics have long been a well known subject apart from high beam currents. Recent NRL experiments at up to 250 kA/cm/sup 2/ ions confirm the classical deposition physics now at current densities which are comp… more
Date: October 19, 1981
Creator: Mark, J.W.K.
Partner: UNT Libraries Government Documents Department
open access

Delay line proportional chambers for the Fermilab external muon identifier

Description: Thirty-nine one meter square proportional chambers with delay line readout were constructed for the external muon identifier of the Fermilab 15 foot bubble chamber. They provide X,Y,U(45/sup 0/) and T (avalanche time) information using a single wire plane, etched strip cathodes and nine amplifiers. They have a time resolution of +-27ns, single particle spatial resolution of +-2 to +-3mm and double particle resolution of approximately 2/sup 1///sub 2/ to 4cm. The energy accessible to each wire i… more
Date: October 19, 1977
Creator: Parker, S.; Orthel, J. & Marriner, J.
Partner: UNT Libraries Government Documents Department
open access

X-ray lines as a density diagnostic in DT plasmas near 100x solid density

Description: The use of electron impact broadened resonance lines to diagnose near-term high density diagnostics is discussed. In particular, the question of how to choose seed and pusher materials to have discernible broadening effects while maintaining line visibility is discussed.
Date: October 19, 1977
Creator: Bailey, D.S.
Partner: UNT Libraries Government Documents Department
open access

Neutral beam injection system for the Tokamak Fusion Test Reactor

Description: The Tokamak Fusion Test Reactor will be installed at the Princeton Plasma Physics Laboratory facility. This is a major step to reach the goal of fusion power using toroidal magnetic fields for plasma confinement. A major part of this test reactor will be four neutral beam injection systems. These systems will inject 20 MW of 120 kV neutral deuterium atoms into the plasma for 0.5 seconds. In order to achieve the required power input to the plasma, several systems are required within the neutral … more
Date: October 19, 1977
Creator: Pittenger, L.C.; Stone, R.R.; Valby, L.E. & Pedrotti, L.R.
Partner: UNT Libraries Government Documents Department
open access

System design for the new TMX machine

Description: The Tandem Mirror Experiment (TMX) is designed to test the physics of a new approach to Q-enhancement in open confinement systems. In the tandem mirror concept, the ends of a long solenoid are plugged electrostatically by means of ambipolar potential barriers created in two mirror machines or plugs, one at each end of the solenoid. The ambipolar potential in mirror machines develops as a consequence of the higher scattering rate of electrons and the balancing of electron and ion loss rates. The… more
Date: October 19, 1977
Creator: Chargin, A. K.; Calderon, M. O.; Mooney, L. J. & Vogtlin, G. E.
Partner: UNT Libraries Government Documents Department
open access

Investigation of Charge Transport Properties of CdZnTe Detectors with Synchrotron X-ray Radiation

Description: Various internal defects, such as Te inclusions, twin boundaries, dislocation, etc., are prevalent in as-grown CdZnTe (CZT) crystals, which affect the charge transport properties of CZT crystals and, therefore, worsen the performance of CZT detectors. In order to develop high quality CZT detectors, it is imperative to clarify the effects of internal defects on the charge transport properties of CZT. Simple flood illumination with nuclear radiation source cannot reveal the nature of highly local… more
Date: October 19, 2008
Creator: Yang, G.; Bolotnikov, A. E.; Camarda, G. S.; Cui, Y.; Hossain, A. & James, R. B.
Partner: UNT Libraries Government Documents Department
open access

TRANSPARENCY: Tracking Uranium under the U.S. / Russian HEU Purchase Agreement

Description: By the end of August, 2005, the Russia Federation delivered to the United States (U.S.) more than 7,000 metric tons (MT) of low enriched uranium (LEU) containing approximately 46 million SWU and 75,000 MT of natural uranium. This uranium was blended down from weapons-grade (nominally enriched to 90% {sup 235}U) highly enriched uranium (HEU) under the 1993 HEU Purchase Agreement that provides for the blend down of 500 MT HEU into LEU for use as fuel in commercial nuclear reactors. The HEU Transp… more
Date: October 19, 2005
Creator: Benton, J B; Decman, D J & Leich, D A
Partner: UNT Libraries Government Documents Department
open access

Good electrical contacts for high resistivity (Cd,Mn)Te crystals

Description: We consider that semi-insulating (Cd,Mn)Te crystals may well successfully replace the commonly used (Cd,Zn)Te crystals as a material for manufacturing large-area X- and gamma-ray detectors. The Bridgman growth method yields good quality and high-resistivity (10{sup 9}-10{sup 10} {Omega}-cm) crystals of (Cd,Mn)Te:V. Doping with vanadium ({approx} 10{sup 16} cm{sup -3}), which acts as a compensating agent, and annealing in cadmium vapors, which reduces the number of cadmium vacancies in the as-gr… more
Date: October 19, 2008
Creator: Witkowska-Baran, M.; Mycielski, A.; Kochanowska, D.; Szadkowski, A. J.; Jakiela, r.; Witkowska, B. et al.
Partner: UNT Libraries Government Documents Department
open access

Orbital HP-Clouds for Solving Schrödinger Equation in Quantum Mechanics

Description: Solving Schroedinger equation in quantum mechanics presents a challenging task in numerical methods due to the high order behavior and high dimension characteristics in the wave functions, in addition to the highly coupled nature between wave functions. This work introduces orbital and polynomial enrichment functions to the partition of unity for solution of Schroedinger equation under the framework of HP-Clouds. An intrinsic enrichment of orbital function and extrinsic enrichment of monomial f… more
Date: October 19, 2006
Creator: Chen, J. S.; Hu, W. & Puso, M. A.
Partner: UNT Libraries Government Documents Department
open access

Interspecific Differences in Metabolic Rate and Metabolic Temperature Sensitivity Create Distinct Thermal Ecological Niches in Lizards (Plestiodon)

Description: This article examines three congeneric lizards from the southeastern United States (Plestiodon fasciatus, P. inexpectatus, and P. laticeps) and hypothesizes that interspecific differences in metabolic temperature sensitivity locally segregates them across their total range.
Date: October 19, 2016
Creator: Watson, Charles M. & Burggren, Warren W.
Partner: UNT College of Arts and Sciences
open access

Sodium pool fire model for CONACS code. [LMFBR]

Description: The modeling of sodium pool fires constitutes an important ingredient in conducting LMFBR accident analysis. Such modeling capability has recently come under scrutiny at Westinghouse Hanford Company (WHC) within the context of developing CONACS, the Containment Analysis Code System. One of the efforts in the CONACS program is to model various combustion processes anticipated to occur during postulated accident paths. This effort includes the selection or modification of an existing model and de… more
Date: October 19, 1982
Creator: Yung, S.C.
Partner: UNT Libraries Government Documents Department
open access

Safety procedures for the MFTF sustaining-neutral-beam power supply

Description: The MFTF SNBPSS comprises a number of sources of potentially hazardous electrical energy in a small physical area. Power is handled at 80 kV dc, 80 A; 70 V dc, 4000 A; 25 V dc, 5500 A; 3 kV dc, 10 A; and 2 kV dc, 10 A. Power for these systems is furnished from two separate 480 V distribution systems and a 13.8 kV distribution system. A defense in depth approach is used; interlocks are provided in the hardware to make it difficult to gain access to an energized circuit, and the operating procedu… more
Date: October 19, 1981
Creator: Wilson, J. H.
Partner: UNT Libraries Government Documents Department
open access

Constraints on the atmospheres of Type I supernovae

Description: The Ca II absorption lines observed in the late time optical spectra of Type I supernovae are analyzed in the context of the /sup 56/Ni model. The analysis indicates that a metal rich atmosphere of mass approx. 0.2 M/sub solar mass/ surrounds the /sup 56/Ni core. This result is consistent with properties of the atmosphere derived from spectra near maximum light.
Date: October 19, 1981
Creator: Axelrod, T.S.
Partner: UNT Libraries Government Documents Department
open access

Computer simulation of superthermal transport for laser fusion

Description: The relativistic multigroup diffusion equations describing superthermal electron transport in laser fusion plasmas were derived in an earlier UCRL. A successful numerical scheme based on these equations which is now being used to model laser fusion experiments is described.
Date: October 19, 1979
Creator: Kershaw, D.S.
Partner: UNT Libraries Government Documents Department
open access

Modeling of brine migration in halite

Description: Four different models of the migration process have been reviewed to determine their suitability as a working model. While there are several common factors in the models additional factors are included to account for several possible effects. The detail of each model leads to a certain degree of difficulty in applying the model to the problem at hand. One model predicts that inclusions smaller than 0.1 mm dimension probably will not migrate. The other models do not consider size as a factor. Th… more
Date: October 19, 1979
Creator: Cheung, H.; Fuller, M.E. & Gaffney, E.S.
Partner: UNT Libraries Government Documents Department
open access

Modeling of brine migration in halite

Description: When canisters containing radwastes are emplaced in a repository the heat produced by the decaying radwaste will cause moderate thermal gradients to develop which will cause the brine present in a halite medium (salt deposits) to accumulate around the canister. Four different models of the migration process have been reviewed to determine their suitability as a working model. One model predicts that inclusions smaller than 0.1 mm dimension probably will not migrate. The other models do not cons… more
Date: October 19, 1979
Creator: Cheung, H.; Fuller, M.E. & Gaffney, E.S.
Partner: UNT Libraries Government Documents Department
open access

Transcript of the workshop to discuss plans for a National High Intensity Radioactive Nuclear Beam Facility

Description: Following the First International Conference on Radioactive Nuclear Beams'' in Berkeley, a workshop was held on October 19, 1989 at the Lawrence Berkeley Laboratory to discuss plans for a National High Intensity Radioactive Nuclear Beam (RNB) Facility. The purpose of the workshop was -- after having discussed during the conference the physics question that can be addressed with RNBs -- to evaluate more concretely the possibilities for actually constructing such a facility in this country. It is… more
Date: October 19, 1989
Creator: Nitschke, J.M. (ed.)
Partner: UNT Libraries Government Documents Department
open access

Potentially Hazardous Air Contaminants in the Home

Description: The health concerns of several substances likely to be encountered in the non-industrial indoor environment are discussed. Monitoring data and information on the health effects of CO, NO/sub 2/, formaldehyde, and radon are included. (JGB)
Date: October 19, 1982
Creator: Woodring, J. L.
Partner: UNT Libraries Government Documents Department
open access

A Dynamically Adaptive Arbitrary Lagrangian-Eulerian Method for Hydrodynamics

Description: A new method that combines staggered grid Arbitrary Lagrangian-Eulerian (ALE) techniques with structured local adaptive mesh refinement (AMR) has been developed for solution of the Euler equations. The novel components of the combined ALE-AMR method hinge upon the integration of traditional AMR techniques with both staggered grid Lagrangian operators as well as elliptic relaxation operators on moving, deforming mesh hierarchies. Numerical examples demonstrate the utility of the method in perfor… more
Date: October 19, 2002
Creator: Anderson, R W; Pember, R B & Elliott, N S
Partner: UNT Libraries Government Documents Department
open access

Recent Test Results of the High Field Nb3Sn Dipole Magnet HD2

Description: The 1 m long Nb{sub 3}Sn dipole magnet HD2, fabricated and tested at Lawrence Berkeley National Laboratory, represents a step towards the development of block-type accelerator quality magnets operating in the range of 13-15 T. The magnet design features two coil modules composed of two layers wound around a titanium-alloy pole. The layer 1 pole includes a round cutout to provide room for a bore tube with a clear aperture of 36 mm. After a first series of tests where HD2 reached a maximum bore f… more
Date: October 19, 2009
Creator: Ferracin, P.; Bingham, B.; Caspi, S.; Cheng, D. W.; Dietderich, D. R.; Felice, H. et al.
Partner: UNT Libraries Government Documents Department
open access

Megachannel. gamma. --. gamma. coincidence system using a PDP-8/E computer and moving-head disks

Description: A megachannel pulse-height analysis system using a PDP-8/E computer and two moving-head disk memories has been developed. The system has a storage capacity of 220 memory locations, is capable of processing 1100 events/s, and provides on-line sorting and disk storage. An X- or Y-pulse-height spectrum in coincidence with one or several arbitrary pulse-height windows can be assembled in core for scope display and spectral analysis within 2 to 20 seconds. Reconstruction of a complete X- or Y-pulse-… more
Date: October 19, 1976
Creator: Ruhter, W. D.; Camp, D. C.; Mann, L. G.; Niday, J. B. & Siemens, P. D.
Partner: UNT Libraries Government Documents Department
open access

Evaluation Of The Integrated Solubility Model, A Graded Approach For Predicting Phase Distribution In Hanford Tank Waste

Description: The mission of the DOE River Protection Project (RPP) is to store, retrieve, treat and dispose of Hanford's tank waste. Waste is retrieved from the underground tanks and delivered to the Waste Treatment and Immobilization Plant (WTP). Waste is processed through a pretreatment facility where it is separated into low activity waste (LAW), which is primarily liquid, and high level waste (HLW), which is primarily solid. The LAW and HLW are sent to two different vitrification facilities and gla… more
Date: October 19, 2012
Creator: Pierson, Kayla L.; Belsher, Jeremy D. & Seniow, Kendra R.
Partner: UNT Libraries Government Documents Department
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