Page 1. Accelerated Insertion of Materials � Manufacturing and Producibility of Hat Stiffened Structure ... AIM-C Producibility Heuristics ...
DTIC Science & Technology
... The elemental additions also accelerated the formation of alpha manganese at the grain boundaries during aging. Descriptors ...
Material properties are vital for the field of accelerator R&D. Euclid Techlabs in collaboration with the Argonne Wakefield Accelerator facility team has investigated accelerator applications of metamaterials, photonic band gap structures, nonlinear, paramagnetic and ferroelectric ...
NASA Astrophysics Data System (ADS)
HOME RESEARCH Research at SLAC Accelerator Physics Astrophysics and Cosmology Elementary Particle Physics Materials and Nanoscience Molecular Environmental Science Structural...
Science.gov Websites
... Descriptors : *COMPOSITE MATERIALS, *COMPOSITE STRUCTURES, MILITARY REQUIREMENTS, LESSONS LEARNED, RISK, DEFENSE ...
AIM-C is a methodology for accelerated insertion of materials into defense structures at reduced costs. This methodology develops a design knowledge database that links what is known about a material system to what is needed in order to quality its applic...
National Technical Information Service (NTIS)
The accelerating gradient in a laser-driven dielectric accelerating structure is often limited by the laser damage threshold of the structure. For a given laser-driven dielectric accelerator design, we can maximize the accelerating gradient by choosing the best combination ...
Energy Citations Database
This is the summary of presentations and discussions of the High Gradient and EM Structure Based Accelerators Working Group at the 2008 Advanced Accelerator Concepts Workshop. The working group mission statement and charge are described and presentations on different topics are summarized. The topics include investigations of high ...
The accelerating gradient is one of the crucial parameters affecting the design, construction and cost of next-generation linear accelerators. For a specified final energy, the gradient sets the accelerator length, and for a given accelerating structure and pulse repetition rate, it determines ...
DOE Information Bridge
An electronuclear reactor is described in which a very high-energy particle accelerator is employed with appropriate target structure to produce an artificially produced material in commercial quantities by nuclear transformations. The principal novelty resides in the combination of an accelerator with a ...
DOEpatents
... Tools Risk Analysis Tools CC20044.07 Errors in material property definition, errors in coding, errors in integrating process and structural models. ...
This document contains briefing charts on the Accelerated Insertion of Materials - Composites (AIM-C). Topics covered include a summary of progress to date: accurately predicted laminate stiffness, accurately predicted typical unnotched and open hole stre...
The possibility of laser driven accelerators [1] suggests the need for new structures based on micromachining and integrated circuit technology because of the comparable scales. Thus, we are exploring fully integrated structures including sources, optics (for both light and particle) and acceleration in a common ...
The dual ion beam accelerator system has been developed for simulation studies of neutron radiation damage of structural materials for nuclear fusion and fission reactors. One accelerator is used to accelerate two different kinds of ions, which are generated in the ion source simultaneously. ...
Diamond is an excellent material for dielectric loaded accelerating structures. It has a high breakdown threshold, very low dielectric losses and an extremely high coefficient of thermal conductance. In this paper we review progress on the design and development of diamond-based accelerating ...
This paper reviews research in the United States and Japan on structural materials for high-field superconducting magnets. Superconducting magnets are used for magnetic fusion energy devices and for accelerators that are used in particle-physics research....
This paper reviews research in the United States and Japan on structural materials for high-field superconducting magnets. Superconducting magnets are used for magnetic fusion energy devices and for accelerators that are used in particle-physics research. The cryogenic structural materials that ...
Superconducting Radio Frequency (SRF) accelerator structures made from high purity niobium are becoming the technological choice for a large number of future accelerators and energy recovery LINAC�s (ERL). Most of the presently planned accelerators and ERL requirements will be met with some effort by the current ...
Superconducting Radio Frequency (SRF) accelerator structures made from high purity niobium are becoming the technological choice for a large number of future accelerators and energy recovery LINAC's (ERL). Most of the presently planned accelerators and ERL requirements will be met with some effort by the current ...
Vertebral compression represents a significant percentage of the morbidity associated with upward ejection. Vertebral and intervertebral structure reacts to and is sometimes irreversibly altered by ejection acceleration. Design and material properties of ...
The electron cloud effect (ECE) causes beam instabilities in accelerator structures with intense positively charged bunched beams. Reduction of the secondary electron yield (SEY) of the beam pipe inner wall is effective in controlling cloud formation. We ...
The beam entry window and container for a liquid lead spallation target will be exposed to high fluxes of protons and neutrons that are both higher in magnitude and energy than have been experienced in proton accelerators and fission reactors, as well as ...
The class of problems related to the use of heavy ion accelerators for the production of nuclear track membranes, a new type of polymer micro- and ultrafiltration material, is considered. The problem of forming a porous structure with required parameters ...
Previous encouraging results with titanium and silicone based coating agents for coupling dental resins to tooth surfaces have been reinforced with accelerated aging data. Accelerated aging data for bone bonded to bone specimens indicates that a viscous i...
While silicon has several properties making it an attractive material for structure-based laser-driven acceleration, its optical damage threshold, a key parameter for high-gradient acceleration, has been unknown. Here we present measurements of the optica...
Accelerators of sufficient energy and particle fluence can produce radioactivity as an unwanted byproduct. The radioactivity is typically imbedded in structural materials but may also be removable from surfaces. Many of these radionuclides decay by positr...
The primary goal of the program is to develop the necessary scientific and engineering base for accelerated development of the powder fabrication route as a technologically and economically attractive means of materials production. Primary areas of study ...
The evolution of composites applications in aeronautics from 1970 to the present is discussed. The barriers and challenges to economic application and to certification are presented and recommendations for accelerated development are outlined. The potenti...
accelerator technology, heavy ion physics, and particle detector development. crystal structure Rare Coupling of Magnetic and Electric Properties in a Single Material...
... DARPA AIM-C Structural Property Prediction ... Composite INVAR Aluminum ... Many parameters can affect residual stress: local fiber volume fraction ...
The radio-frequency quadrupole (RFQ) linac structure is being developed for the acceleration of low-velocity ions. Recent experimental tests have confirmed its expected performance and have led to an increased interest in a wide range of possible applications. The general properties of RFQ accelerators are reviewed and beam dynamics ...
Recent initiatives to accelerate the insertion of materials and link the materials design and systems design processes have called for the advancement of microstructure-property relationships. In order to achieve these goals, the development of digital mi...
Accelerating gradient is one of the crucial parameters affecting design, construction and cost of next-generation linear accelerators. Operating accelerating gradient in normal conducting accelerating structures is limited by rf breakdown. In this paper we describe an experimental setup for ...
... INDUCTION SYSTEMS, *ELECTRON ACCELERATORS, *PARTICLE ACCELERATORS, IMPEDANCE, BETATRONS, NUCLEAR STRUCTURE. ...
As the frontier of particle physics moves towards higher energies, there is a mounting pressure on the accelerator physics community to develop new accelerating concepts resulting in more compact accelerators. This requires higher accelerating gradients and, owing to the trapping criterion, higher radiation ...
Superconducting RF technology is since nearly a decade routinely applied to different kinds of accelerating devices: linear accelerators, storage rings, synchrotron light sources and FEL's. With the technology recommendation for the International Linear Collider (ILC) a year ago, new emphasis has been placed on improving the performance of ...
The development of accelerator-driven systems involving the production of spallation neutrons will require extensive materials data on the response of structural components to the effects of the mixed charged particle and neutron fluxes. Failure to anticipate the potentially strong influence of radiation on ...
The design of high-intensity accelerators is described, using examples of machines being built at the Los Alamos National Laboratory. The major design problem with these accelerators is associated with control of beam loss when accelerator intensity is increased. Beam dynamics, beam loss, and the radio-frequency quadrupole ...
-filled with a dense material (e.g. concrete or steel) � All the way through concrete radiation shielding Contact), a radioactive material management area (RMMA), or part of accelerator shielding (for example, the Accelerator, such as radiological shielding or hazardous material confinement ...
E-print Network
We have directly measured the damping of wake-field deflection modes in a slow-wave accelerating structure consisting of a dielectric-lined waveguide with segmented conducting boundaries wrapped with rf absorbing material. Such damping of deflection modes is desired to prevent beam breakup instabilities. Attenuation {ital e}-folding ...
The importance of particle acceleration may be judged from the number of applications which require some sort of accelerated beam. In addition to accelerator-based high energy physics research, non-academic applications include medical imaging and treatment, structural biology by x-ray diffraction, pulse ...
A radar absorbing material, CMS-184, and assemblies bonded with two silicone based structural adhesives, DC-577 and RTV-630, were subjected to limited accelerated aging conditions and then evaluated for degradation of mechanical properties and adhesion, r...
The development of structural barriers for nuclear waste packages involves selection of candidate materials, their screening by mechanical and corrosion testing, rigorous accelerated testing, and evaluation and comparison with other package elements. This document presents results from work conducted on titanium and ferrous alloys.
The pulsed energy programs at Sandia National Laboratories (SNLA) have often required dielectric materials that provide a dual role of high voltage insulation as well as critical structural support. One typical application is the dielectric tension rods for the trigatron gas switch used on the PBFA-I Accelerator. This paper describes ...
Dispersion strengthened copper, known by the trade name GLIDCOP{reg_sign}, has found various applications in accelerator designs. Glidcop has material properties similar to OFE copper, such as thermal and electrical conductivity. Unlike OFE, however, Glidcop has yield and ultimate strengths equivalent to those of mild-carbon steel, making it a good ...
A 100-mA 50-MeV H exp - accelerator is being designed at Los Alamos. The accelerating structures will operate at 425-MHz and will consist of a radio-frequency quadrupole (RFQ) to 2-MeV and a drift-tube linac (DTL) from 2 to 50-MeV. Design parameters have ...
The Naval Academy Tandem Accelerator Laboratory is dedicated to providing educational experiences for undergraduates. Students gain experience in accelerator operations, detector and data acquisition systems, nuclear structure and reaction mechanisms, and materials analysis techniques. Suggestions for managing the ...
Laser acceleration is based on the concept to marshal collective fields that may be induced by laser. In order to exceed the material breakdown field by a large factor, we employ the broken-down matter of plasma. While the generated wakefields resemble with the fields in conventional accelerators in their structure ...
PubMed
Linear accelerations measurements are needed in many applications, as industry, military, aircrafts, space navigation, robotics and others. Actually, the most usual solutions to measure linear accelerations are three piezoelectric sensors used in orthogonal mounting, or MEM's sensors chips. Angular accelerations also are interesting to ...
... rays is used to study acceleration and higher order discontinuities in nonlinear simple elastic materials. No special material symmetry is assumed ...
... Title : Accelerating Utilization of New Materials. Descriptive Note : Final rept. ... The advantages to be derived from new materials are documented. ...
The Fusion Materials Irradiation Test Facility will provide a unique testing environment for irradiation of structural and special-purpose materials in support of fusion-power systems. The neutron source will be produced by a deuteron-lithium stripping reaction to generate high-energy neutrons to ensure materials ...
The principle of magnetic induction has been applied to the acceleration of high current beams in betatrons and a variety of induction accelerators. The linear induction accelerator (LIA) consists of a simple nonresonant structure where the drive voltage is applied to an axially symmetric gap that encloses a ...
This paper presents a progress report on the development of a dielectric-loaded test accelerator in the Magnicon Facility at the Naval Research Laboratory (NRL). The accelerator will be powered by an 11.4-GHz magnicon amplifier that provides up to 25 MW of output power in a {approx}250-ns pulse at up to 10 Hz. The accelerator includes ...
The article compares the relative stability of MCM-41 and related mesoporous materials in electron beam at an accelerating voltage of 100 300 kV. The work encountered in electron microscopy presents a comparison with similar research that has been carried out on nonporous and microporous silicates, especially [alpha]-quartz and zeolite Y. The trends in ...
Results of research work of a pulsed plasma accelerator, designed as diagnostic and material science stands in SRIETP are presented. We present results on the development of electric and magnetic probes used for measurement of plasma parameters. The physical properties and changes in structure of vanadium alloy, common quality carbon ...
We report on the use of paramagnetic active media for the PASER (Particle Acceleration by Stimulated Emission of Radiation) and for dielectric loaded accelerating structures with tunable absorption for high order modes. The dielectric is doped with a material exhibiting high paramagnetic resonance, e.g. ruby with ...
The work is aimed at measurements and computer simulations of independent and cumulative yields of residual product nuclei in thin targets relevant as target materials and structure materials for hybrid accelerator-driven systems coupled to high-energy proton accelerators.
This paper describes considerations for selection of structural and target materials for accelerator-driven neutron sources. Due to the operating constraints of proposed accelerator-driven neutron sources, the criteria for selection are different than those commonly applied to fission and fusion systems. ...
AD-A 247 769 k4 49c16(- 0 ACCELERATED DRYING OF WETTED MATERIALS ... evidence for accelerated drying of wetted materials emanating ...
Page 1. 0 Acceleration Waves in Elasti3-Plastic Materials tM. ... Abstract. -Acceleration waves in elastic-plastic materials are studied in ...
As part of our ongoing development of the Dielectric Wall Accelerator, we are studying the performance of multilayer high-gradient insulators. These vacuum insulating structures are composed of thin, alternating layers of metal and dielectric, and have been shown to withstand higher gradients than conventional vacuum insulator ...
The Fusion Materials Irradiation Test (FMIT) Facility accelerator is being designed to continuously accelerate 100-mA deuterons to 25 MeV. High vacuum pumping of the accelerator structure and beam lines will be done by ion pumps and titanium sublimation pumps. The design of the roughing system ...
Over the last sixty years the applications of ion beam accelerators has grown from basic nuclear structure research to the manufacture, preservation, and development of a large number of products which directly affect every day life. In addition, ion beam accelerators continue to provide a unique contribution in both basic and applied ...
Laser-driven acceleration holds great promise for significantly improving accelerating gradient. However, scaling the conventional process of structure-based acceleration in vacuum down to optical wavelengths requires a substantially different kind of structure. We require an optical waveguide ...
The Fusion Materials Irradiation Test (FMIT) accelerator will supply the neutron flux required for studying materials that may be used in a fusion environment. The diagnostic measurement instrumentation, which will characterize the accelerator beam, must be noninterceptive because of the beam's power ...
We discuss simulated photonic crystal structure designs for laser-driven particle acceleration, focusing on three-dimensional planar structures based on the so-called ''woodpile'' lattice. We describe guiding of a speed-of-light accelerating mode by a defect in the photonic ...
