Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.

In the HYLIFE-2 Inertial Confinement Fusion reactor, an array of Flibe (Li{sub 2}BeFe{sub 4}) jets is designed to protect the chamber from the fusion radiation. During the fusion pulse the Flibe jets sustain an instantaneous neutron and X-ray heating. The high energy neutrons from fusion can penetrate deep into the Flibe jets and the sudden increase in internal energy can induce a great pressure rise inside the jets. The subsequent relaxation of the jets is important for the reactor design, because the configuration of the jets will control the subsequent impact forces of vapor and liquid on the reactor chamber wall. The calculations for the lithium jets in the HYLIFE-1 reactor were done previously by using a compressible flow model with a soft sphere equation of state for lithium. A similar equation of state model for Flibe was recently developed. This model allows us to use the same compressible analysis code to calculate the pressure field in the Flibe jets and to estimate the upper bound of the Flibe tension limit. With these results we can analyze the mechanisms of jet relaxation and breakup. 4 refs., 1 fig.

The SAMUS collimator cart is a support for shielding blocks and the vacuum assembly of the Tevatron beam tube as it passes through the D0 End Iron. It slides on linear bearings mounted in the SAMUS toroid as the End Iron moves in and out. There are two collimators designed for the D0 experiment, designated North and South, each identical except for the shimming of the tungsten center blocks, and thereby the relative position of the Tevatron tube. This report contains calculations of the stresses during installation as well as the installed configurations. To support the analysis of the installation case, loads were simulated on the cart held in a mock-up of the lifting fixture.

Efforts are currently underway to redesign the neutron covers to meet radiation-safety guidelines, with the goal of reducing the radiation level over the vault by at least a factor of 100. This note describes the results of measurements of radiation attenuation by sample shields. The purpose of the shielding study is to provide data for the redesign of the neutron covers. The radiation escaping from the neutron covers appears to be predominantly gammas. In addition, there is a small, more penetrating component, which may consist of energetic (>200 MeV) neutrons leaking past the neutron covers. Reduction of the measured radiation by more than an order of magnitude is easily achieved by placing a 6-inch steel plate over the existing neutron covers. However, the desired reduction by two orders of magnitude requires further attenuation of the more penetrating component. The conclusion of the study is that 48 inches of concrete should adequately attenuate the radiation.

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.

You are at D0, the newest and most advanced experiment at Fermilab. Its goal is to find the 'top quark', nicknamed 'truth'. theoretically one of the six fundamental building blocks of matter. Combinations of the six quarks are said to make up electrons, protons and neutrons. Your group at D0 is the cryogenic division. Its goal is to provide and maintain a cryogenic system which ultimately supplies and controls the liquid argon used in the giant cryostats for the experiment. The high purity liquid argon is needed to keep the detector modules inside the cryostats cold, so that they will operate properly. Your job at D0 is to be a co-op for the research and development group of the cryogenics division. Your goals are dependent on the needs of the cryo group. D0 is where you will spend most of your time. The co-op office is located on what is known as the 3rd floor, but is actually on the ground floor. The floor directly above the 3rd floor is the 5th floor, which contains your immediate superiors and the D0 secretary. The 6th and top floor is above that, and contains the D0 secretary for official and important business. …

Flibe (Li{sub 2}BeF{sub 4}) is a candidate material for the liquid blanket in the HYLIFE-2 fusion reactor. The thermodynamic properties of the material are important for the study of thermohydraulic behavior of the concept design, including the compressible analysis of the blanket isochoric heating problem and resulting jet breakup. The equation of state provides the relationship between all the thermodynamic properties. Previously, a soft sphere model of liquid equation of state was used for describing a number of liquid metals. In this paper we have fitted the available experimental data for liquid Flibe with a modified soft sphere model. 5 refs.

Weekly newsletter published for employees of the Fort Worth Division of General Dynamics containing work-related information, updates about employees, and other news.

Weekly newspaper from Grandview, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from Sulphur Springs, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.

The theoretical development of relations governing the eddy current induced losses in iron electromagnet yokes is reviewed. A baseline laminated electromagnet design is analyzed and a parametric study illustrates the sensitivity of core losses to perturbations of various geometrical, material, and excitation parameters. Core losses and field gradients for the ALS septum magnets are calculated. Design modifications capable of eliminating transverse and longitudinal field gradients are discussed.

The theoretical development of relations governing the eddy current induced losses in iron electromagnet yokes is reviewed. A baseline laminated electromagnet design is analyzed and a parametric study illustrates the sensitivity of core losses to perturbations of various geometrical, material, and excitation parameters. Core losses and field gradients for the ALS septum magnets are calculated. Design modifications capable of eliminating transverse and longitudinal field gradients are discussed.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

A video of orientation information for new students at the University of North Texas.

Several buildings at Y-12 Plant rely on unreinforced hollow clay tile walls (HCTW) infilled between unbraced, non-moment resisting steel frames to resist natural phenomena forces, seismic and wind. One critical building relies on moment resisting steel frames in one direction while relying on unreinforced HCTWs infilled between the columns in the orthogonal direction to resist these forces. The HCTWs must act as shear walls while maintaining out-of-plane lateral stability. In assessing the safety of these buildings to seismic forces, several models to study the in- and out-of-plane effects were made and analyzed. The study of the moment resisting steel framed building indicated that bending stresses in the walls were induced by building drift and not by inertial forces per se. The discovery of this phenomenon was some what of a surprise in that the analysis performed is not typically used in design of these structures. The study indicated that the walls began to crack at their interface with the foundation at a low ``g`` level and that horizontal cracking at different elevations continued until the walls exhibited little bending resistance. This paper presents results of the study for out-of-plane behavior of unreinforced HCTWs infilled between adjacent moment resisting steel frames …