NDLI: Radiographic paraxial diode experiments on RITS-6

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2008 17th International Conference on High Power Particle Beams (BEAMS)

Registrant list

Review of pulsed power development and applications in Russia

Recent advances in radiographic X-ray source development at Sandia

High power particle beams researches in IFP

Cost optimization of HPM systems

Recent progress on relativistic magnetrons using a transparent cathode

Progress in Z-pinch at NINT

The “Baikal” project and investigations of radiating Z-pinches at the “Angara-5-1” facility

The electrical energy conversion in the z-pinch implosion on the “QIANG GUANG I” facility

Development of the prototype module of the 6MV/10MA Z-pinch test stand

Space-temporal structure and x-ray emission dynamic of Z-pinch on base of wire arrays in energy quantum range over 20 keV

X-ray emission of relativistic nonquasineutral current structures (nonthermal model of “hot spot”)

Plasma dynamics in different kinds of experiments at megaampere range on S-300 machine

Analysis of the PTS vacuum insulator stack

Multiframing Mach-Zehnder interferometer for spatiotemporal plasma density measurement in “Dragon-1” target zone

Prospects of pulsed high-current dischargein nitrogen-filled-capillary for lasing at 13.4 nm

Studies of high power microwave sources at NUDT

Advances in cherenkov relativistic backward-wave oscillators

A repetitive high-current pulsed accelerator—TPG700

Sharp electron density for laser wakefield accelerator

A repetitive high voltage pulse adder based on solid state switches

Study of magnetically isolated diode with dielectric anode at repetitive rate operation mode

Optimization of high-voltage nanosecond pulse compression

Composite material vacuum insulator for large pulsed power facility

The design of the double shell gas puff for Qiangguang I generator

Compact repetitive PFN-LTD pulse-power generator

High-current electron accelerator based on pulse generator with vacuum insulation

240keV double-pulse LIA device

High power and repetitively pulsed operation of a Relativistic Extended-Interaction-Cavity Oscillator

STARFISH 1 - Towards a compact 1MA pulsed power generator for z-pinch applications

High-voltage pulse generators for microwave radiation sources

1D and 2D circuit-code modeling of the refurbished Z accelerator

A compact,repetitive trigger generator

Effects of output peaking capacitor on underwater streamer propagation

High power microwave research at the university of strathclyde

Initial LSP simulations of electron beam transport in gas filled drift cells and comparison with experiments performed on the eta II linear induction acceleration at LLNL

Pulse power device and beam driven target as tools for high energy density science

Impact of conductors accelerated by a pulsed high magnetic field

An advances in relativistic BWOs at repetitive rate

Long pulse high power microwave generation by coaxial vircator

CHIPIC: A highly efficient code for electromagnetic PIC modeling and simulation

Design of the compact multimode feeds with high power capacity

Phenomena of incomplete ferroelectric surface discharge

Investigations of cold cathode emission in gas and vacuum with picosecond resolution

Effect of emission increasing at the generation of low-energy submillisecond electron beam in the diode with the plasma cathode

Increasing the current rise rate of low-energy, dense pulsed electron beams

Low-energy, high-current electron beam transportation through a plasma channel in a guide magnetic field

Investigation of an ideal intense relativistic sheet electron beam propagating in a periodic magnetic focusing system

Dynamics of cathode plasma speed in planar diode with explosive emission cathode

Research on large emission area thermionic cathode

Acceleration of macroscopic particle to hypervelocity by high intensity beams

Predicting the behavior of pulsed wire discharge

Electrical explosion of single wire by pulsed high current

Plasma heating in the multimirror trap GOL-3 by prolongated pulse REB

Formation of nanosized particles of silicon carbide and diamonds in surface layer of silicon target during short-pulsed implantation of carbon ions

Electron beams under fore pump pressure range: Generation and some applications

Surface modification of TiC-NiCrAl hard alloy by pulse electron beam

Characterization of intense pulsed aluminum ion beam by magnetically insulated diode with vacuum arc ion source

Research activities on HPM at UESTC

Design and simulation of C-band bifrequency Magnetically Insulated transmission Line Oscillator

Simultaneous generation and transport of two microsecond sheet REBs in application to multichannel FEM

20-MW desktop free-electron laser at THz frequencies

An inward-emitting magnetically insulated line oscillator

Design of a TM01-TE01 transmission line for high-power microwave applications

Repetition rate operation of an improved magnetically insulated transmission line oscillator

Experimental and numerical studies on relativistic magnetron with axial extraction

Laser generation in semiconductors due to high-current picosecond electron beams

Experimental research on the voltage distribution of tesla transformer's taper windings

Diamagnetic loop diagnoses emittance of intense pulse beam

Pulse shortening in the improved magnetically insulated transmission line oscillator

The study of the framing technology on Z-Pinch plasma imaging diagnosticate

A high power 390 GHz harmonic gyrotron based on cusp electron gun

PIC simulation of a novel microwave oscillator based on the self-modulation of annular intense relativistic electron beam

New approaches to enhance the output power in an HMFCG

500kV compact repetitive Marx generator

Simulation investigation of an improved L-band ladder cathode MILO

Linear analysis of corrugated-wall waveguides driven by annular beam with finite-strength guiding magnetic field

Designing and testing of high-coupling Tesla transformer

Experimental study on high pressure hydrogen gas switch breakdown

Long pulse electron beam generator based on Tesla transformer and pulse forming network

Dual output pulses generator based on a new type of Blumlein pulse forming line

A high-energy spark gap switch and trigger system

Resistance-voltage-dividing load used for testing and measurement in pulsed power experiments

Primary investigation of fast linear transformer driver module

Laser-induced breakdown experiment in nitrogen

Application of ion beam and electron beam by plasma focus device to material processing

Radiographic paraxial diode experiments on RITS-6

Calibration of the energy response for the soft X-ray spectrometer with the BSRF

A resistive BPM for Mini-LIA

Applications of series resonant power supply in Tesla transformer

Compact repetitive Pulsed E-field Generator

Application of the coupled wave theory on design of HPM transmission line

The optimal coupling calculation between waveguide and input cavity in relativistic klystron amplifier

High power microwave short pulse generation at S-band using multi-resonant cavity

The design and optimization of a C-band integrated mode converter and horn antenna

Frequency characteristics of TE11 mode enhanced coaxial vircator

Experimental studies of a Ka-band gyroklystron amplifier

Applications of treatment design in the study on the characteristic of a detector

Towards a self-consistent LSP model of an electron beam diode

High quality pseudospark electron beams for millimetre-wave sources

Design and analysis of the Z-pinch loads on the PTS facility

Parallel electromagnetic FDTD program design and implementation on JASMIN

An introduction to Mini-LIA

Beam characterizations of the Mini-LIA

High power microwave generation by a novel vircator with coaxial waveguide

Phenomenon of electrical tree in repetitive nanosecond high electrical field pulse

Development of nanosecond pulsed high-power amorphous cores

Generation narrow focusing beams in plasma cathode electron guns

The influence of high negative substrate pulse bias on bulk plasma density

Investigation of anode foil stability at high-current electron accelerator

Research of inductance period of hydrogen-oxygen mixture ignition by pulsed electron beam action

Primary experimental study on synchronous discharge of ten multi gap multi channel gas switches

The magnetic field distribution in acceleration gap of magneticaly insulated ion diode

DC emitting characteristics of a single crystal LaB6 thermionic cathode

Secondary electron emission characteristic of nanocrystalline diamond films

A high ratio air-core pulse transformer

The study on the property of intense beam diode insulator

Analysis of complex cathode material emission characters

Development of P-C switch with adjustable gap

Design of a two stage Magnetic Pulse Compression system

Development of a pulsed power trigger device

Synchronization of laser pulse and voltage pulse in laser-triggered surface flashover

Design and test of small helical generator with load current up to MA

Laser trigger system for multi-module facility

Compact repetition fast rise time Marx generator

The restoration research of the burst double-pulses linear induction accelerator cell

Design of a high-power linear induction prototype cell at megahertz repetition rate burst mode

Primary study on a pulse trigger with laser triggered gas switch

Investigation of 4 MV coaxial-triplate water self-breaking switch

Experimental study of semi-insulating GaAs photoconductive semiconductor switch

Time-resolved measurement system using Optical Transition Radiation for electron beam of high energy and high current

Measuring intense electron beam centroid position using B-dot monitors

The blur of system for FTO proton radiography

Characterization of the rod-pinch diode at 1 MV as a radiography source

Study of Ar K-shell spectra from Z-pinch experiments on Yang Accelerator

GIT-4 experiments with plasma opening switch of RFNC-VNIITF design

Microsecond plasma opening switches operation scenario

Runaway electron beam formation in coaxial gas-filled diode

The simulation of electron beam formation in initial stage of gas discharge

Ion acceleration by moving virtual cathode during the electron beam “compressed” state collapse

High spectral resolved spectroscopic diagnostics for wire array z-pinch plasmas

Experiment WEX - Wire explosion in water

Conceptual design of a 2.5 MV linear transformer driver generator for X-ray radiography

High power and high-longevity GaAs photoconductive semiconductor switches

W-band Gyro-BWO using a helically corrugated waveguide

Design of high voltage pulsed power supply using storage battery as prime power source

Simulation study of a novel all solid, long pulse, high power pulse modulator

Theoretical study of pulse forming line (PFL) charged by capacitance through transformer considering the energy recuperation

Experimental research on a 10-stage wave erection Marx generator

Experimental studies on a repetitive pulsed power modulator with a compact Tesla transformer

Study of primary power supply of repetitive intense current pulsed accelerator based on super-capacitor

Hydrodynamic loading of ceramic components due to electrical discharge in water

Monte Carlo simulation of the multipactor electron discharge on a dielectric surface

A short dipole antenna

Design considerations for an overmoded MW-class terahertz surface-wave oscillator

A study on frequency stabilities of microwave emission from a reflex triode vircator

A low guiding-magnetic-field high power millimeter-wave generator operated in the TM01 mode

Design of the collector in a coaxial relativistic backward wave oscillator

Studies of a novel low-impedance transit time radiation oscillator

Simulation research of a novel MILO

Output rise-time estimation for high-power pulse generator

Self breakdown properties and optimum of insulator envelope for MV gas switches

Relationship of pulsed permeability of magnetic cores with annealing Metglas and interlayer insulation films to applied voltage slope

Signal compensation of transmission cable of QiangGuang I accelerator

Simulation and experiments on transportation of HPIB

An energy spectrometer for detecting flash X-ray spectra from 200 to 3000keV

Status of high power ion beams research at Northwest Institute of Nuclear Technology

K-shell radiation characteristics of neon gas puff z-pinches imploded on Qiangguang-I facility

Main types of explosive opening switches and their switching parameters

Sectionalized explosive current opening switch

Dynamics of the current distribution in a discharge of the PF-3 plasma focus facility

Design of an energy recovery system for a Gyrotron backward wave oscillator

A W-band gyrotron travelling wave amplifier using a helically corrugated waveguide

Influence of anode plasma on the operation of diode with explosive emission cathode

10 kV square wave generator

Study of nanopowder production by gas-embeded electrical explosion of wire

Numerical simulation of the microhollow cathode discharge characteristics

Particle simulation of X-band dual frequency coaxial relativistic backward wave oscillator

Design of a transition section for 94GHz gyrotron oscillator

Calculations on dispersion relation and coupling impedance of plasma coupled-cavity SWS

Research of GaAs target erosion factor under influence of pulsed power ion beam

Factors influencing one stage magnetic pulse compression system output

Laser differential interferometer for diagnostics of gas-puff Z-pinch

Nanosecond high-voltage generator

A magnetically insulated transmission line oscillator working at HEM11 mode

2004 International Conference on High-Power Particle Beams (BEAMS 2004)

2002 14th International Conference on High-Power Particle Beams (BEAMS)

2000 13th International Conference on High-Power Particle Beams

12th International Conference on High-Power Particle Beams. BEAMS'98. Proceedings (Cat. No.98EX103)

1992 9th International Conference on High-Power Particle Beams

1990 8th International Conference on High-Power Particle Beams

1983 5th International Conference on High-Power Particle Beams

Radiographic paraxial diode experiments on RITS-6

Content Provider	IEEE Xplore Digital Library
Author	Hahn, K. Oliver, B.V. Johnston, M.D. Portillo, S. Bittlestone, D.J. Cooper, G. McLean, J. Schamiloglu, E. Bruner, N. Rose, D.V. Welch, D.R.
Copyright Year	2008
Description	Author affiliation: Sandia Nat. Labs., Albuquerque, NM, USA (Hahn, K.; Oliver, B.V.; Johnston, M.D.; Portillo, S.) \|\| Dept. of Electr. & Comput. Eng., Univ. of New Mexico, Albuquerque, NM, USA (Schamiloglu, E.) \|\| Atomic Weapons Establ., Reading, UK (Bittlestone, D.J.; Cooper, G.; McLean, J.) \|\| Voss Sci., Albuquerque, NM, USA (Bruner, N.; Rose, D.V.; Welch, D.R.)
Abstract	Intense electron beam-driven diodes are being developed for flash x-ray radiography at 7.5 - 12 MV on the RITS-6 accelerator at Sandia National Laboratories. One of several diodes under investigation is the paraxial diode in which a 40-kA electron beam is formed in vacuum, propagated through a thin anode foil, and focused inside a gas-filled transport cell onto a high-atomic-number target to generate x-rays. Two key objectives are to produce a small spot size, <;5 mm, and high forward-directed dose, >;600 R@1m. Particle-in-cell (PIC) simulations have shown that the primary limitation in spot size is the finite decay of the plasma return current which causes the beam focal position to sweep axially during the pulse, hence leading to an increased time-integrated spot size [1]. Recently obtained time-resolved measurements of the spot size which support this hypothesis are reported. Interpretation of these results was aided by PIC simulations in which additional physical processes were included, such as stimulated ion emission from the foil and increasing area of cathode emission [2]. Other outstanding issues for the paraxial diode on RITS-6 are also presented which include electron power-flow coupling to the diode, cavity modes which may affect focusing, and gas-breakdown physics models. Measurements of dose, dose rate, time-integrated (and time-resolved) spot size, and current are reported from experimental results primarily at 7.5 MV. Time-resolved images of the cathode emission are also presented.
Starting Page	1
Ending Page	5
File Size	642724
Page Count	5
File Format	PDF
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-07-06
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Fluid Physics, C
Subject Keyword	Atomic measurements Radiography Image resolution Atmospheric measurements Focusing Time measurement Plasmas
Content Type	Text
Resource Type	Article

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