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9,768 Matching Results
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The 2mrad Crossing Angle Interaction Region and Extraction Line
A complete optics design for the 2mrad crossing angle interaction region and extraction line was presented at Snowmass 2005. Since this time, the design task force has been working on developing and improving the performance of the extraction line. The work has focused on optimizing the final doublet parameters and on reducing the power losses resulting from the disrupted beam transport. In this paper, the most recent status of the 2mrad layout and the corresponding performance are presented.
Date:
July 12, 2006
Creator:
Appleby, R.; U., Manchester; Angal-Kalinin, D.; Tech, /Cockcroft Inst. Accel. Sci.; Dadoun, O.; Bambade, P. et al.
Object Type:
Article
System:
The UNT Digital Library
Introduction to the Workshop, and a Brief Review of the Early Experiments on Multiple Crossing Laser Beams
The purpose of the workshop is to review recent experiments on the laser plasma interactions of multiple laser beams, and encourage interaction and collaboration on future experiments in this exciting emerging area. The format is a series of nine, 10 minute talks followed by a 5 minute question period covering the major topics of (1) scattering and transfer of power by multiple beams in ICF experiments; (2) basic studies of KEEN wave physics especially as facilitated by multi-beam interaction; and (3) compression of laser pulses by multi-beam interactions.
Date:
June 12, 2005
Creator:
Kirkwood, R K
Object Type:
Article
System:
The UNT Digital Library
Accuracy-Constrained Efficiency Optimization and GPU Profiling of CNN Inference for Detecting Drainage Crossing Locations
Article describes how the accurate and efficient determination of hydrologic connectivity has garnered significant attention from both academic and industrial sectors due to its critical implications for environment management. To address these challenges, the focus of the author's study is on detecting drainage crossings through the application of advanced convolutional neural networks.
Date:
November 12, 2023
Creator:
Zhang, Yicheng; Pandey, Dhroov; Wu, Di; Kundu, Turja; Li, Ruopu & Shu, Tong
Object Type:
Article
System:
The UNT Digital Library
Pareto Optimization of CNN Models via Hardware-Aware Neural Architecture Search for Drainage Crossing Classification on Resource-Limited Devices
Article describes how embedded devices, constrained by limited memory and processors, require deep learning models to be tailored to their specifications. This research explores customized model architectures for classifying drainage crossing images.
Date:
November 12, 2023
Creator:
Li, Yuke; Baik, Jiwon; Rahman, Md Marufi; Anagnostopoulos, Iraklis; Li, Ruopu & Shu, Tong
Object Type:
Article
System:
The UNT Digital Library
California's San Joaquin Valley: A Region in Transition
This report analyzes the San Joaquin Valley (SJV) counties and statistically documents the basis of current socioeconomic conditions. The report further explores the extent to which the SJV shares similarities with and differs from the Appalachian Regional Commission (ARC) area and a 68- county Central Appalachian subregion which contains some of the most economically distressed counties in Appalachia. The report also examines the role of federal expenditures in the cities and counties of the SJV. In addition to examining socioeconomic conditions in the SJV, the report provides analysis of water supply and quality issues especially those concerning agriculture, air quality concerns, and rail and shipping issues.
Date:
December 12, 2005
Creator:
Cowan, Tadlock
Object Type:
Report
System:
The UNT Digital Library
Neutron Production in the Pinch Due to Instability Breakup
Abstract: "The neutrons from the linear pinch in Berkeley have been shown to originate from deuteron collisions with a large net center-of-mass velocity in one direction along the axis of the pinch tube. The interpretation of this result is that the neutron production associated with the pinch is non-thermonuclear in origin. The object of this paper is to review the experimental evidence and discuss a possible source of the neutron production."
Date:
May 12, 1956
Creator:
Colgate, Stirling A.
Object Type:
Report
System:
The UNT Digital Library
Paramagnetic Susceptibilities and Electronic Structures of Aqueous Cations of Elements 92 to 95
Abstract: Magnetic susceptibilities per gram atomic weight of elements 92 to 95 in most of their oxidation states were measured at 20°C on 0.1 ml of solution which was 0.005 to 0.09M in heavy element. The values obtained (all paramagnetic) in units × 106 were: U(IV), 3690; Np(VI), 2060; Np(V), 4120; Np(IV), 4000; Pu(IV), 1610; Pu(III), 370; Am(III), 720. The results could be interpreted only on the basis of electronic configurations 5fn, even though susceptibilities were generally lower than the theoretical values and lower than experimental values for corresponding lanthanide 4fn cations. The lower values should be expected as a result of the Stark effect produced by electric fields of anions and of water dipoles. Failure of the Russell‐Saunders approximation to the coupling between electrons may account for some of the error in the theoretical calculations. That the susceptibilities of Pu(III) and Am(III) are manyfold lower than those of Sm(III) and Eu(III), respectively, is attributed to wider multiplet splitting in the actinide atoms.
Date:
November 12, 1948
Creator:
Howland, Jerome J. & Calvin, Melvin, 1911-1997
Object Type:
Report
System:
The UNT Digital Library
The Greensheet (Houston, Tex.), Vol. 41, No. 71, Ed. 1 Friday, March 12, 2010
Free weekly newspaper that includes business and classified advertising.
Date:
March 12, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 39, No. 539, Ed. 1 Friday, December 12, 2008
Free weekly newspaper that includes business and classified advertising.
Date:
December 12, 2008
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 43, No. 443, Ed. 1 Friday, October 12, 2012
Free weekly newspaper that includes business and classified advertising.
Date:
October 12, 2012
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 44, No. 131, Ed. 1 Friday, April 12, 2013
Free weekly newspaper that includes business and classified advertising.
Date:
April 12, 2013
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 41, No. 23, Ed. 1 Friday, February 12, 2010
Free weekly newspaper that includes business and classified advertising.
Date:
February 12, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 38, No. 431, Ed. 1 Friday, October 12, 2007
Free weekly newspaper that includes business and classified advertising.
Date:
October 12, 2007
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 167, Ed. 1 Friday, May 12, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
May 12, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 36, No. 323, Ed. 1 Friday, August 12, 2005
Free weekly newspaper that includes business and classified advertising.
Date:
August 12, 2005
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Plasma injection and atomic physics models for use in particle simulation codes
Models of plasma injection (creation) and charged/neutral atomic physics which are suitable for incorporation into particle simulation codes are described. Both planar and distributed source injection models are considered. Results obtained from planar injection into a collisionless plasma-sheath region are presented. The atomic physics package simulates the charge exchange and impact ionization interactions which occur between charged particles and neutral atoms in a partially-ionized plasma. These models are applicable to a wide range of problems, from plasma processing of materials to transport in the edge region of a tokamak plasma. 18 refs., 6 figs.
Date:
June 12, 1991
Creator:
Procassini, R.J. (Lawrence Livermore National Lab., CA (USA) California Univ., Berkeley, CA (USA). Electronics Research Lab.)
Object Type:
Report
System:
The UNT Digital Library
First mix experiments at Nova, the LoRo series
The first series of experiments using the Nova laser to investigate mix at an interface between different materials has been completed. Mix was induced by a shock crossing the interface and initiating a Richtmyer-Meshkov instability. Both low and high Atwood number targets were used and the results compare favorably with simulations using a k{var epsilon} mix model. These experiments pave the way for new designs which should provide data needed to develop mix models with predictive capabilities. 9 refs., 8 figs.
Date:
September 12, 1991
Creator:
Rupert, V.C.
Object Type:
Article
System:
The UNT Digital Library
Design of an Interaction Region with Head-On Collisions for the ILC
An interaction region (IR) with head-on collisions is considered as an alternative to the baseline configuration of the International Linear Collider (ILC) which includes two IRs with finite crossing-angles (2 and 20 mrad). Although more challenging for the beam extraction, the head-on scheme is favored by the experiments because it allows a more convenient detector configuration, particularly in the forward region. The optics of the head-on extraction is revisited by separating the e+ and e- beams horizontally, first by electrostatic separators operated at their LEP nominal field and then using a defocusing quadrupole of the final focus beam line. In this way the septum magnet is protected from the beamstrahlung power. Newly optimized final focus and extraction optics are presented, including a first look at post-collision diagnostics. The influence of parasitic collisions is shown to lead to a region of stable collision parameters. Disrupted beam and beamstrahlung photon losses are calculated along the extraction elements.
Date:
July 12, 2006
Creator:
Appleby, R.; U., /Cockcroft Inst. Accel. Sci. Tech. /Manchester; Angal-Kalinin, D.; Jackson, F.; /Daresbury; Alabau-Pons, M . et al.
Object Type:
Article
System:
The UNT Digital Library
An experimental study of the richtmyer-meshkov instability, including amplitude and wave length variations
We report on results of an experimental study of the Richtmyer- Meshkov instability. The growth of the mixing region in the nonlinear regime is measured for a set of cases in which the amplitude and wavelength of the initial perturbation are varied systematically. The experiments are conducted on the Nova laser facility, and use a Nova hohlraum as a driver source to launch a high-Mach number shock into a miniature shock tube attached to the hohlraum. The shock tube contains brominated plastic and low density carbon foam as the two working fluids, with a micro-machined, triangular sawtooth interface between them serving as the initial perturbation. The sawtooth perturbation waveform is dominated by a single mode, and the perturbation amplitudes are chosen to expedite transition into the nonlinear phase of the instability. The shock, upon crossing the perturbation at the interface, instigates the Richtmyer-Meshkov instability. The resulting growth of the mixing region is diagnosed radiographically. Quantitative measurements of the temporal growth of the width of the mixing region are made for six different combinations of amplitude and wavelength, building upon previous results which employed a single amplitude/wavelength combination. Data from both experimental and supporting simulations suggest that the nonlinear growth of …
Date:
June 12, 1997
Creator:
Logory, L. M.; Miller, P. L.; Peyser, T. A.; Murray, S. D.; Farley, D. R.; Burke, E. W. et al.
Object Type:
Article
System:
The UNT Digital Library
The Garland News (Garland, Tex.), Vol. 55, No. 46, Ed. 1 Friday, February 12, 1943
Weekly newspaper from Garland, Texas that includes local, state, and national news along with advertising.
Date:
February 12, 1943
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Garland News. (Garland, Tex.), Vol. 17, No. 43, Ed. 1 Friday, February 12, 1904
Weekly newspaper from Garland, Texas that includes local, state, and national news along with advertising.
Date:
February 12, 1904
Creator:
Green, Joe T.
Object Type:
Newspaper
System:
The Portal to Texas History
Garland News. (Garland, Tex.), Vol. 19, No. 5, Ed. 1 Friday, May 12, 1905
Weekly newspaper from Garland, Texas that includes local, state, and national news along with advertising.
Date:
May 12, 1905
Creator:
Holford, Will A.
Object Type:
Newspaper
System:
The Portal to Texas History
The Garland News (Garland, Tex.), Vol. 54, No. 37, Ed. 1 Friday, December 12, 1941
Weekly newspaper from Garland, Texas that includes local, state, and national news along with advertising.
Date:
December 12, 1941
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Garland News (Garland, Tex.), Vol. 55, No. 11, Ed. 1 Friday, June 12, 1942
Weekly newspaper from Garland, Texas that includes local, state, and national news along with advertising.
Date:
June 12, 1942
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History