The 2-D. electromagnetic, relativistic simulation code, MAGIC, was used to investigate the detailed physics associated with the operation of the NRL CPA testbed experiment. Code results contradiicted the original conclusions drawn from the experimental di...
National Technical Information Service (NTIS)
Various aspects of the C-metric representing two rotating charged black holes accelerated in opposite directions are summarized and its limits are considered. A particular attention is paid to the special-relativistic limit in which the electromagnetic field becomes the �magic field� of two oppositely ...
NASA Astrophysics Data System (ADS)
Land of Magic Windows. Go through the gateway to the Land of the Magic Windows to learn about kinds of light (electromagnetic radiation) ...
NASA Website
Electromagnetic waves and bursty electron acceleration. 5 distribution. ..... Electromagnetic waves andbursty electron acceleration ...
The 2-D electromagnetic, relativistic simulation code, MAGIC, was used to investigate the detailed physics associated with the operation of the NRL CPA testbed experiment. Code results contradicted the original conclusions drawn from the experimental diagnostics in that the central beam always propagated with a current of 1-2kA in the numerical ...
Energy Citations Database
Acceleration effects on resonant frequencies of electromagnetic cavity, using constitutive equations
NASA Technical Reports Server (NTRS)
... Applications for Long Duration Electromagnetic Launcher Experiments. ... Railgun, Electromagnetic Launcher, Electromagnetic Acceleration. ...
DTIC Science & Technology
... Title : Measurement of Acceleration Using an Instrumented Railgun Projectile. ... Railgun, Electromagnetic Launcher, Electromagnetic Acceleration. ...
... field of electromagnetic code HFSS and PIC code MAGIC. continuation ... with verified by comparisons with the PIC code MAGIC e2] the ...
... (Author). Descriptors : *ION ACCELERATORS, ELECTROMAGNETS, ION BEAMS, FOCUSING, RINGS, USSR, LINEAR ACCELERATORS. ...
X-band accelerating structures operate at surface gradients up to 120-180 MV/m. At these gradients, electron currents are emitted spontaneously from the structure walls (''dark currents'') and generate additional electromagnetic fields inside the structure. The authors estimate the effect of these fields on the ...
SLC beams of opposite charge can be transversely deflected in the same direction by RF fields in the accelerating cavities caused by girder tilts, coupler-asymmetries, or manufacturing errors. A symmetric deflection can be corrected by a magic angle bump ...
... Patents. (mjm). Descriptors : *DAMPING, *ELECTROMAGNETISM, *PATENTS, *VIBRATION, ACCELERATION, ACCELEROMETERS, ACTUATORS ...
... Title : Resonant Frequencies of an Electromagnetic Cavity in an Accelerated System of Reference. Descriptive Note : Journal article,. ...
... Accession Number : AD0651595. Title : RESEARCH ON ELECTROMAGNETIC PLASMA ACCELERATION. VOLUME I. THE ...
A rail accelerator was chosen for study as an electromagnetic space propulsion device because of its
... Descriptors : *ELECTRON ACCELERATORS, *LINEAR ACCELERATORS, ELECTROMAGNETIC FIELDS, SCATTERING, ENERGY ...
Classical radiation from an accelerated charge is reviewed along with the reciprocal topic of accelerated observers detecting radiation from a static charge.
... Accession Number : ADA153583. Title : Further Studies of the NRL Collective Particle Accelerator VIA Numerical Modeling with the MAGIC Code. ...
SLC beams of opposite charge can be transversely deflected in the same direction by RF fields in the accelerating cavities caused by girder tilts, coupler-asymmetries, or manufacturing errors. A symmetric deflection can be corrected by a magic angle bump if the deflection is located adjacent to one of the linac quadrupoles. However, if the deflection is ...
The apparatus is for phasing a linear accelerator waveguide section. The system is useful for phasing very long accelerators. The phase relation of the electromagnetic energy at different points in each accelerator section is utilized.
A method of compensation is considered for the instability of particle acceleration in the field of an electromagnetic wave by means of a second electromagnetic wave which is also in resonance with an accelerated particle. The motion stability was analyze...
They are accelerated by electromagnets acting like a linear motor. ... The superconductive electromagnets would explode when exposed to the quickly changing ...
Railgun electromagnetic accelerators are currently being designed for hypervelocity projectile launch in equation of state impact experiments. Launcher development is proceeding in successive stages of increased acceleration and velocity with a goal of la...
The linacs of the Next Linear Collider / Global Linear Collider will contain several thousand traveling wave X-band accelerator structures operating at an input power of about 60 MW. At this input power, prototypes of NLC/GLC structures have breakdown rates lower than one breakdown in ten hours. RF breakdowns disrupt flow of energy inside the structure and create arcs with ...
DOE Information Bridge
The giant elliptical radio galaxy M 87 is the closest known extragalactic object emitting very-high-energy (VHE){gamma}-rays. The prominent jet of M 87 was extensively studied throughout the electromagnetic spectrum in the past revealing a complex structure resolved at radio, optical and X-ray energies. Knots in the jet indicate active regions, possibly associated with ...
The authors examine a computer model of an electromagnetic accelerator (rail gun) with a projected body accelerated by a plasma. They determine the effective length of the accelerator, the electrical efficiency of the equipment, and the plasma parameters. Numerical results are obtained for different parameters of ...
... operational warfare, joint planning, national and international ... a 'ring circulator' accelerator coil using ... of various model accelerators using numerical ...
... ION BEAMS, *CYCLOTRON RESONANCE, *PLASMA ... ENERGY, PARTICLES, ELECTROMAGNETIC ... Categories : PARTICLE ACCELERATORS ...
A closed form analytic solution is found for the electromagnetic field of the charged uniformly rotating conducting disk for all values of the tip speed v up to c. For v=c it becomes the magic field of the Kerr-Newman black hole with G set to zero. The field energy, field angular momentum, and gyromagnetic ratio are calculated and compared with those of ...
... with microscopic particles; 2 ... COHERENT RADIATION, INTERACTIONS), (*ELECTROMAGNETIC RADIATION, *PARTICLE ACCELERATORS), GAS ...
... Descriptors : *BETATRONS, BACKGROUND, IONS, ELECTROMAGNETIC RADIATION, INTERACTIONS, WAVES, GROWTH(GENERAL), RATES ...
... Title : Railgun Plasma Armatures. ... CENTER FOR LASER APPLICATIONS. ... Descriptors : *ELECTROMAGNETIC GUNS, ACCELERATION ...
... under construction at the High Energy Physics Laboratory is ... ELECTRON ACCELERATORS, PARTICLE TRAJECTORIES, ELECTROMAGNETS ...
... electro- magnetic characteristic of the slow wave structure. (ii) This electromagnetic noise is amplified by the beam itself. (iii ...
... and Charged Particle Acceleration ... TURBULENCE, CHARGED PARTICLES, ELECTROMAGNETIC ... HEATING, KINETICS, MAGNETIZATION, HIGH ...
... CONTROL SYSTEMS, THRUST AUGMENTATION, ION SOURCES, ION ACCELERATORS, MERCURY, ELECTRODES, ELECTROMAGNETIC ...
... FLOWMETERS, ACCELERATION, ELECTRONICS, FLOW, TRANSIENTS, FALLING BODIES, WATER, MAGNET COILS, ELECTRODES, SIGNALS ...
An improved version of the plasma impulse accelerator for macroparticles is discussed in detail, overcoming the length limitation of the classical railgun. The acceleration of macroparticles by the use of the plasma brim in the cylindrical electrodes is c...
The theory of electromagnetic wave propagation in a uniformly accelerated simple medium is generalized to cover the case of arbitrary initial wave direction. The wave splits into two natural modes relative to the plane of acceleration and the wave vector....
An electromagnetic accelerator in the form of a linear electric motor (LEM) has been designed to achieve controlled acceleration profiles of a carriage containing hydrodynamically unstable fluids for the investigation of the development of turbulent mix. ...
We discuss the use of 3-D finite-difference time-domain (FDTD) electromagnetic codes for modeling accelerator components. Computational modeling of cylindrically symmetric structures such as induction accelerator cells has been very successful in predicti...
ElectromagneticElectromagneticElectromagneticElectromagnetic Tornados in SpaceTornados in SpaceTornados in SpaceTornados in Space ElectromagneticElectromagneticElectromagneticElectromagnetic Tornados in SpaceTornados in SpaceTornados in SpaceTornados in Space ION ACCELERATION IN THE AURORAL ZONE ION ACCELERATION IN ...
E-print Network
This paper discusses the acceleration of charged particles by electromagnetic fields, i.e., by fields that are produced by the motion of other charged particles driven by some power source. The mechanisms that are discussed include: Ponderamotive Forces, Acceleration, Plasma Beat Wave Acceleration, Inverse Free ...
The ZR accelerator is a refurbishment of Sandia National Laboratories Z accelerator [1]. The ZR accelerator components were designed using electrostatic and circuit modeling tools. Transient electromagnetic modeling has played a complementary role in the analysis of ZR components [2]. In this paper we describe a 3D ...
The relativistic motion of an ensemble of electrons in an intense monochromatic electromagnetic wave
The Major Atmospheric Gamma-ray Imaging ?erenkov Telescope (MAGIC) will be the first ground-based ?erenkov telescope able to detect photons with E > 30 GeV. This region of the electromagnetic spectrum, yet unexplored, is fundamental for pulsar physics since theoretical models foreseen a cut-off in the pulsed emission at tens of GeV. In order to perform ...
We have investigated the effect of acceleration of a charged particle on its Cerenkov emission and ionization losses. We have considered the accelerated motion of a charged particle in an infinite medium with acceleration along with the direction of its m...
Electromagnetic pulsed accelerators with dielectric erosion operating at powers of approximately 10 to the 8th power W are used for plasma acceleration. Such accelerators have proven to be effective devices in which a considerable portion of the energy or...
An instrumented package has been accelerated in a railgun projectile to measure the inbore acceleration as a function of time. Direct, continuous acceleration profiles have been repeatedly obtained with this package during electromagnetic launch and downr...
A review on large-scale investigations on the development of effective accelerating structure, supposed to be used to accelerate heavy ions of wide mass and energy ranges, is presented. The investigations of different structure modifications of pins, plac...
electromagnetic wave Hong Liu1,4 , X. T. He2,3 , S. G. Chen2 and W.Y.Zhang2 �Graduate School, China Academy a few electromagnetic wave cycles through the mechanism which is named electromagnetic and magnetic on the electromagnetic wave intensity, but also on the ratio between electron Larmor frequency and ...
Stroll through an imaginary amusement park and find out how different the universe looks through different types of observing instruments. Thia activity introduces the electromagnetic spectrum to young children.
NSDL National Science Digital Library
The theory of single particle dynamics in circular accelerators is developed in this presentation. The Hamiltonian formulation of a relativistic particle in an electromagnetic field is used. (AIP)
A final report on work covering four years of investigation is presented. Included in this report are the following: (a) An experimental investigation of the acceleration of plasma toroids in a pulsed traveling wave device. (b) A theoretical investigation...
This paper discusses the acceleration of charged particles by electromagnetic fields, i.e., by fields that are produced by the motion of other charged particles driven by some power source. The mechanisms that are discussed include: Ponderamotive Forces, ...
This report considers the use of a diffraction grating as an accelerating structure for charged particle beams. We examine the functional dependence of the electromagnetic fields above the surface of a grating. Calculations are made of the strength of the...
... 1.1 Schematic of Electromagnetic Accelerator Operation. ... by insulators, and these four components are confined together to form the bore assembly. ...
Coherent instabilities in beams grouped in packets in circular accelerators are studied. The origin of the phenomenon lies in the electromagnetic field created by the interaction of the beam (characterized by its distribution), and the environment (modele...
Dec 12, 2004 ... Coronal Mass Ejections ... Physicists on Earth use electromagnetic devices--high -energy accelerators--to accelerate electrons, protons and ...
This report discusses the following topics: electron synchrotrons; proton ion sources and linac R D; and accelerator theory and electromagnetic field calculations. (LSP)
