... Accession Number : ADA225678. Title : Potential Application of Magnetohydrodynamic Acceleration to Hypersonic Environmental Testing. ...

Three-grid ion accelerator in which accelerator grid is biased at negative potential and decelerator

A new accelerator technology, the dielectric wall accelerator (DWA), is potentially an ultra compact accelerator/pulsed power driver. This new accelerator relies on three new components: the ultra-high gradient insulator, the asymmetric Blumlein and low j...

... of the model was an accelerator with 60 +/-% 5 percent phase acceptance under conditions of central rod potential, angular momentum, and transit ...

... Accession Number : ADA130280. Title : Effects of Impact Acceleration on Somatosensory Evoked Potentials. Descriptive Note : Research rept.,. ...

The advantages and potentialities of an accelerator for the production of electrons and protons to be used in radiation effects studies in biology and medicine are discussed. (C.J.G.)

The operation and critical parameters of railguns are described. The potential and actual performance with other types of macroparticle accelerators is compared. Their research and industrial applications are discussed. Railgun accelerators have the poten...

... Experimental study of a back-illuminating short-pulse ... field acceleration and compact accelerator design studies, SPIE ... Longitudinal Wake Potential ...

... Accession Number : ADA156694. Title : Potential Structures and Particle Acceleration on Auroral Field Lines. Descriptive Note : Technical rept.,. ...

Sulfur hexafluoride gas handling system for potential drop particle accelerator, considering design,

Potential ion acceleration and plasma outflow processes at Mercury are presently discussed in the context of ion acceleration and outflow observations in the terrestrial magnetosphere and topside ionosphere. The Mercury acceleration and outflow processes are anticipated to have many similarities with these ...

In high current (50 kA) linear induction accelerators, the accelerating gaps can excite large radial oscillations. A gap was designed that minimized the radial oscillations and reduced potential depressions. The envelope equation predicted radial oscillat...

Accelerator-driven systems for fissile materials production have been proposed and studied since the early 1950s. Recent advances in beam power levels for small accelerators have raised the possibility that such use could be feasible for a potential proli...

The objective was to single out complex evoked potentials (CEP) in the bioelectrical activity (BA) of the human cerebral cortex which were induced by linear accelerations. Results indicated that with exposure to linear accelerations of the chosen range it...

... ionosphere, the ionization density shows large variations ... conditions on the vector potential. ... of the accelerating potentials to ionospheric altitudes. ...

The acceleration model for lunar ions and the resulting ionosphere dynamics are reviewed briefly. An

A plasma channel is a narrow preionized column of plasma that can be used for a number of accelerator applications. Plasma channels play a crucial role in the laser wakefield accelerator (LWFA), where they may provide the acceleration medium as well as guiding of the intense laser pulse and accelerated electron ...

... Title : Free Radicals Accelerate the Decay of Long-Term Potentiation in Field CA1 of Guinea-Pig Hippocampus. Descriptive Note : Scientific rept. ...

... Accession Number : ADP006100. Title : Detection of Acceleration (+Gz) Induced Blackout by Matched-Filtering of Visual Evoked Potentials,. ...

Apr 21, 2011 ... During this study, constant linear acceleration was delivered by centrifugation. Centrifugation has great potential for use as a method to ...

This paper is meant to explore potential new applications of accelerator mass spectrometry (AMS). The proceedings of the Third International Symposium on Accelerator Mass Spectrometry illustrate the growing applications in earth science, archaeology, geop...

Forty-seven healthy test subjects were exposed several times each to linear acceleration of varying value. Depending on the acceleration value, they reported subjectively three types of sensations at the threshold level: nondiscriminated in terms of direc...

The report presents the results of the LORHO Pilot Program undertaken to evaluate the potentiality of MHD generator-accelerator units for hypersonic wind tunnel drive. Basic features of matched MHD generator-accelerators are discussed, including especiall...

Railguns and plasma accelerators have the potential for use in many basic and applied research projects, such as in creating high-pressures for equation-of-state studies and in impact fusion. A brief review of railguns and plasma accelerators with referen...

Techniques useful for generating and conditioning power for high energy pulsed accelerators with potential weapon applications are described. Pulsed electron accelerators are exemplified by ETA and ATA at Lawrence Livermore Laboratories and RADLAC at Sand...

Recirculating induction accelerators (recirculators) have been investigated as possible drivers for inertial fusion energy production because of their potential cost advantage over linear induction accelerators. Point designs were obtained and many of the...

The DO experiment was upgraded in spring 2006 to harvest the full physics potential of the Tevatron accelerator at Fermi National Accelerator Laboratory, Batavia, Illinois, USA. It is expected that the peak luminosity delivered by the accelerator will inc...

This book compiled the paper presented at this seminar. The papers discussed are introduction to radiation chemistry of polymer; potential application of electron accelerators in Malaysia.

An accelerator technology concept which has the potential to meet future Army and Navy mission requirements is the Dielectric Cavity, IFR Guided Recirculating Linear Induction Accelerator (IFRR). This paper presents the advantages of this concept and the ...

A scheme for collectively accelerating ions trapped in a space charge wave supported by an intense relativistic electron beam is disussed. In this scheme ions are trapped in the potential well of a low phase velocity space charge wave and accelerated by g...

The inverse free electron laser accelerator is considered to be a potential high gradient electron accelerator. In this accelerator electrons oscillating in the magnetic field of a wiggler can gain energy from a strong laser beam propagating collinearly. The same mechanism of acceleration can ...

An ion acceleration mechanism is proposed in which ions are trapped and accelerated by a negative energy space charge wave. Under certain conditions, an electron beam propagating down a slowly converging metal guide can be accelerated. A low phase velocity space charge wave initiated at the large radius end of the guide, because it is ...

A prototype MEQALAC capable of replacing the Cockcroft Walton pre-injector at BNL is being fabricated. Ten milliamperes of H/sup -/ beam supplied from a source sitting at a potential of -40 kilovolt is to be accelerated to 750 keV. This energy gain is provided by a 200 Megahertz accelerating system rather than the normal dc ...

In a wake field accelerator a high current driving bunch injected into a structure or plasma produces intense induced fields, which are in turn used to accelerate a trailing charge or bunch. The basic concepts of wake field acceleration are described. Wake potentials for closed cavities and periodic structures are ...

It was proved that accelerated motion of a linear dielectric causes its polarization. Accelerated translational motion of a dielectric's plate leads to the positive charge of the surface facing the direction of motion. Metal plates of a capacitor were used to register polarized charges on a dielectric's surface. Potential difference ...

A method is described for the calculation of aerodynamic loads on a horizontal axis wind turbine rotor. The method is based upon acceleration potential theory. An approximate solution of the boundary value problem has been obtained using a matched asympto...

The recording and subsequent analysis of evoked potential activity has proven useful for the evaluation of neural dysfunction resulting from impact acceleration injury involving the head and neck. In animal impact acceleration experiments involving Rhesus...

The Government set the goal of accelerating the adaptation of photovoltaics by reducing system costs

... Pagination or Media Count : 56. Abstract : An electron probe is a finely focused beam of electrons accelerated through a potential of 5 to 40kv. ...

... Abstract : Current analyses dictate that for economic viability photovoltaic ... a relatively quick assessment can be made of the potential of present ...

... a strong potential for use as cell-based biosensors for environmental ... the goal of accelerating neuronal differentiation for biosensor development. ...

Global Earthquake Hazard Distribution - Peak GroundAcceleration .... the potential danger that major earthquakes pose to school structures and to the ...

... flat plate. The plate was maintained at ground potential and was suspended in a Mach-Zehnder interferometer. A positively ...

Various resource data are presented showing that geothermal energy has the potential of satisfying a

In 2001 the potential for myelin repair was underappreciated. " The system is broken. ... License the first myelin repair target to biopharma within five ...

... positive accelerating potential used for the displays. The literature on atmospheric ions was reviewed to determine the relationship between ion ...

... Abstract : The electrostatic potential profile in the acceleration region of a plasma prefilled ... density ranges from 1 to 100 x 10 to the 12th power/cc as ...

Sep 11, 2011 ... The plasma contactor produces a xenon plasma which will clamp the electrical potential of the Shuttle orbiter to the plasma potential ...

... Accession Number : ADA155912. Title : Matched Filtering of Visual Evoked Potentials to Detect Acceleration (+Gz) INduced Blackout. ...

... Title : Human Short-Latency Somatosensory Evoked Potentials in Impact Acceleration Research: Equipment, Procedures and Techniques. ...

... term changes in high-voltage- supply, potential. ... collecting electrode of the ionization chamber. ... acceleration while all electrode potentials were held ...

... AN" ANALYSIS OF T1'E, P'OTEN-TIAL USE OF RED HORSE CAPABILITIES AND TRAINING ACTIVITIES TO PEPFORM OR ACCELERATE AIR ...

... Title : An Analysis of the Potential Use of Red Horse Capabilities and Training Activities to Perform or Accelerate Air Force Environmental Cleanups. ...

A multigrid method for the acceleration of transonic potential flow calculations based on a Galerkin

The Holifield Facility 25URC tandem accelerator will begin accelerating radioactive ion beams (RIBs) for nuclear structure and astrophysics research in 1996. This paper addresses the development of the accelerator to allow optimum operation with the particular challenges associated with RIBs. New diagnostics for ultra-low-intensity ...

The dynamics of a quantum particle bound by an accelerating delta-functional potential is investigated. Three cases are considered, using the reference frame moving along with the ?-function, in which the acceleration is converted into the additional linear potential. (i) A stationary regime, which corresponds to a ...

Accelerator-driven systems for fissile materials production have been proposed and studied since the early 1950s. Recent advances in beam power levels for small accelerators have raised the possibility that such use could be feasible for a potential proliferator. The objective of this study is to review the state of technology ...

The Compact Toroid Injection Experiment (CTIX) is used to accelerate spheromak-like plasmas between coaxial electrodes. These accelerated toroids are studied for their potential use as a fueling mechanism for magnetic fusion devices. With unconditioned walls, the compact toroid velocity obtained in the CTIX ...

We investigate a possible form of Schr�dinger�s equation as it appears to moving observers. It is shown that, in this framework, accelerated motion requires fictitious potentials to be added to the original equation. The gauge invariance of the formulation is established. The example of accelerated Euclidean transformations is ...

Two injector accelerator options for HE-LHC of p{sup +} - p{sup +} collisions at 33 TeV cms energy are briefly outlined. One option is based on the Super-SPS (S-SPS) accelerator in the SPS tunnel, and the other one is based on the LER (Low-Energy-Ring) accelerator in the LHC tunnel. Expectations of performance of the main arc ...

Recent development work conducted at Brookhaven National Laboratory on technologies which use particle accelerator-driven targets is summarized. These efforts include development of the Spallation-Induced Lithium Conversion (SILC) Target for the Accelerator Production of Tritium (APT), the Accelerator-Driven Assembly for Plutonium ...

Recent development work conducted at Brookhaven National Laboratory on technologies which use particle accelerator-driven targets is summarized. These efforts include development of the Spallation-Induced Lithium Conversion (SILC) Target for the Accelerator Production of Tritium (APT), the Accelerator-Driven Assembly for Plutonium ...

We review basic constraints on the acceleration of ultra-high-energy (UHE) cosmic rays (CRs) in astrophysical sources, namely, the geometric (Hillas) criterion and the restrictions from radiation losses in different acceleration regimes. Using the latest available astrophysical data, we redraw the Hillas plot and find potential UHECR ...

Waves in plasmas can accelerate particles that are resonant with the wave. A DC electric field also accelerates particles, but without a resonance discrimination, which makes the acceleration mechanism profoundly different. We investigate the effect on a Hamiltonian distribution of an accelerating ...

A device is described for providing a source of molecular ions having a large output current and with an accelerated energy of the order of 600 kv. Ions are produced in an ion source which is provided with a water-cooled source grid of metal to effect maximum recombination of atomic ions to molecular ions. A very high accelerating voltage is ...

A Geiger counter with post-acceleration has been constructed for use with the Vanderbilt iron-free spectrometer. Electrons focused on the spectrometer exit slit are accelerated by an electric field before penetrating the counter window. The accelerating potential is variable from 0 to 8.5 kv. A variable ...

We discuss the classical tests of general relativity in the presence of Rindler acceleration. Among these tests, the perihelion shifts give the tightest constraints and indicate that the Pioneer anomaly cannot be caused by a universal solar system Rindler acceleration. We address potential caveats for massive test objects. Our tightest ...

The goal of accelerator shielding design is to protect the workers, general public, and the environment against unnecessary prompt radiation from accelerator operations. Additionally, shielding at accelerators may also be used to reduce the unwanted background in experimental detectors, to protect equipment against radiation damage, ...

Modern data are showing increasing evidence that the Universe is accelerating. So far, all attempts to account for the acceleration have required some fundamental dimensionless quantities to be extremely small. We show how a class of scalar field models (which may emerge naturally from superstring theory) can account for acceleration ...

Modern data are showing increasing evidence that the Universe is accelerating. So far, all attempts to account for the acceleration have required some fundamental dimensionless quantities to be extremely small. We show how a class of scalar field models (which may emerge naturally from superstring theory) can account for acceleration ...

Collective carbon ion acceleration in relativistic electron beam of Start accelerator is studied. It is shown that ion acceleration is performed by a virtual cathode potential well moving self-consistently with the motion of ion flux front and break-down ...

The electron, positron, and photon acceleration in the first cycle of a laser-driven wakefield is investigated. Separatrices between different types of the particle motion (trapped, reflected by the wakefield and ponderomotive potential, and transient) are demonstrated. The ponderomotive acceleration of electrons can be largely ...

We describe the dosimetric characteristics of a newly introduced dual photon energy linear accelerator, the Varian Clinac 1800. Depth doses are compared with other accelerators of the same nominal accelerating potentials (6 and 10 MV). Field flatness at d/sub max/ and at 10 cm depth, depth of d/sub max/, wedge ...

An automatic control system for a high-voltage electrostatic accelerator with an accelerating potential of up to 500 kV is described. The electronic apparatus on the high-voltage platform is controlled and monitored by means of a fiber-optic data-exchange system. The system is based on CAMAC modules that are controlled by a ...

There has recently been a study of the potential uses of multimode dielectric structures for wakefield acceleration [1]. This technique is based on adjusting the wakefield modes of the structure to constructively interfere at certain delays with respect to the drive bunch, thus providing an accelerating gradient enhancement over single ...

of experimental control has enabled a quantitative comparison with theory. We consider atomic motionObservation of atomic tunneling from an accelerating optical potential C. F. Bharucha, K. W of cold sodium atoms from an accelerating one-dimensional standing wave of light. Atoms are trapped

We subject a falling cloud of cold cesium atoms to periodic kicks from a sinusoidal potential created by a vertical standing wave of laser light. By controllably accelerating the potential, we show quantum accelerator mode dynamics to be highly sensitive to the effective gravitational ...

The authors study Viking observations of ion and electron vertical drift from midaltitude heights in the auroral zones. These obsevations show substantial field-aligned acceleration, which they conclude are related to electrostatic processes along field lines. Viking measured potential fields, and potential wells are observed ...

A muscle produces moments at the joints it crosses, but these moments can also cause accelerations at joints not crossed by the muscle. This phenomenon, the acceleration of a joint caused by a muscle not crossing the joint, is referred to as induced acceleration. For a system of rigid bodies this study examines how system ...

High Temperature Superconductors (HTS) have the potential to change the design and operation of future particle accelerators beginning with the design of high performance interaction regions. HTS offers two distinct advantages over conventional Low Temper...