1983 5th International Conference on High-Power Particle Beams

12-14 Sept. 1983

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  • [Title pages]

    Publication Year: 1983, Page(s):1 - 7
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  • Table of contents

    Publication Year: 1983, Page(s):v - xvii
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  • Conference summary

    Publication Year: 1983, Page(s):1 - 9
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    At the end of the conference, a general session was held in which the conference results were summarized by VanDevender (Sandia), Sudan (Cornell), Doucet (Ecole Polytechnique), and Nakai (Osaka). It was the general consensus that significant progress had been made during the past two years in all areas, but that significant problems remain, particularly in developing the 10n sources required for i... View full abstract»

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  • Inertial confinement fusion programs/targets

    Publication Year: 1983, Page(s):13 - 15
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  • Light ion beam fusion

    Publication Year: 1983, Page(s):17 - 22
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (405 KB)

    The Inertial Confinement Fusion Program with Light Ion Drivers is developing high intensity ion beam driver technology on PBFA I and will apply that technology to study implosion hydrodynamics of small fuel masses on PBFA II. Power concentration is the key issue. The research on beam production and focusing is interpreted to give guidelines for future research in the ICF Program. Recent progress i... View full abstract»

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  • Applications of terawatt pulse generators for fusion research

    Publication Year: 1983, Page(s):23 - 27
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    Presently, a series of facilities with an output power of one to ten terawatts and an output energy of one to several megajoules are being built or already in operation. These are the Sandia Laboratories PBFA I facility in operation and the ANGARA-5 facility (first phase with 1-MJ output energy and 90 ns pulse duration) built at the I. V. Kurchatov Institute of Atomic Energy (IAE). A number of oth... View full abstract»

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  • Particle beam ICF research at ILE Osaka

    Publication Year: 1983, Page(s):28 - 33
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    The major efforts for particle beam driven fusion at ILE Osaka are as follows; development of pulsed power technology to construct a reliable and compact module for breakeven system, generation of high bright ion beam and its focusing and transport, an investigation of beam target interaction, and design studies of targets for efficient implosion by pulsed power and also by hybrid drivers with las... View full abstract»

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  • Recent progress in beam-fusion studies of the ETIGO Project at Nagaoka

    Publication Year: 1983, Page(s):34 - 39
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    Systematic studies have been carried out of R & D on ion-beam fusion at Tech. Univ. of Nagaoka, called ETIGO Project. It consists of several sub programs associated with generation, focusing, transport, post-acceleration, bunching, target irradiation of the LIB, and so on. Their progresses will be reviewed here. I) Focusing: Using a spherically-shaped, magnetically insulated diode (MID), we ha... View full abstract»

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  • The interaction of fast charged particles with plasma targets

    Publication Year: 1983, Page(s):40 - 45
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (509 KB)

    Particle beams ICF targets are high energy density plasmas. As a result, various processes involved in the interaction of fast charged particles with such targets are different from those encountered in cold matter. Ways to treat the slowing down of fast point charge particles of known charge are discussed, considering the effects due to free and bound electrons. Plasma effects on the charge state... View full abstract»

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  • Beam-target interaction of intense ion beams: Theory and experiment

    Publication Year: 1983, Page(s):46 - 51
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (490 KB)

    Work has continued toward the goal of developing and experimentally verifying a numerical model that can accurately predict the stopping power of any ion in any target material at any density, temperature, and degree of ionization. We will review our most recent theoretical work to compute the stopping power of low-Z ions in partially ionized material. We are presently attempting to develop an acc... View full abstract»

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  • A proposal to fusion scheme by light ion beam

    Publication Year: 1983, Page(s):52 - 55
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (310 KB)

    Twelve Marx generators, whose total stored energy is 26MJ and diode voltage is 10MV or 5.1MV, supply the energy to diodes to extract proton beams. The combination of two types of diodes are used. One type of diodes has the outer radius of 32.3cm and the inner radius of 30cm insulated by the radial magnetic field and extracts the rotating ring beam whose energy is 0.802MJ, pulse width is 40ns, prop... View full abstract»

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  • Progress in intense ion beam research for inertial confinement fusion at Cornell University

    Publication Year: 1983, Page(s):56 - 59
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (414 KB)

    Recent studies of time integrated and time dependent ion beam divergence using two magnetically insulated diodes at 1010–1011W show a directionality which is apparently a result of electron dynamics and/or anode plasma nonuniformities in the diodes. Beam uniformity, divergence, and “aiming error” are dependent upon the detailed diode structure and operating conditions. Experi... View full abstract»

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  • An 80-GW relativistic electron beam accelerator

    Publication Year: 1983, Page(s):60 - 62
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (602 KB)

    An 80-GW intense electron beam accelerator has been designed, built, tested, and now is in operation at Institute of Atomic Energy of the Academia Sinica for fundamental research in pulse power technology and particle beam inertial confinement fusion. Its pulse parameters are 80 GW, 5.6 KJ, 1 MV, 80 KA, 70 NS. This accelerator consists of an oil-immersed Marx generator, a Blumlein transmission lin... View full abstract»

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  • Microinstabilities of light ion beams in fusion target chambers

    Publication Year: 1983, Page(s):63 - 66
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    In the investigation of inertial confinement fusion by a light ion beam (LIB), it is the most important problem to pr opagate the LIB stably through the chamber to the target. Mainly this concept is being carried with the method by use of plasma channels theoretically and experimentally for propagation of LIB in a reactor. In our previous theoretical investigations, it has appeared that the microi... View full abstract»

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  • Stabilization of propagating light ion beam by its rotating motion

    Publication Year: 1983, Page(s):67 - 69
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    The stability of propagating proton beam with rotation around the propagation axis is examined here numerically. If the electron number density of the background gas in the reactor is chosen to be so small that the electron mean free path is longer than the mean electron Larmor radius but the number density is high enough to satisfy that the plasma frequency of the background gas is larger than 10... View full abstract»

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  • Laser-initiated discharge channels in sodium vapor

    Publication Year: 1983, Page(s):70 - 73
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    As the preliminary experiments for the propagation of ion beams, we produced electrical discharge channels in alkali metal vapors by resonant laser lights. A z-discharge channel was initiated by a laser beam which was tuned to the sodium D resonance line (λ=589 nm). The heated discharge chamber (50 mm in inner diameter) was filled with the mixture gas of sodium vapor and N2. The total p... View full abstract»

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  • Toroidal magnetic lens systems for intense ion beam focusing

    Publication Year: 1983, Page(s):74 - 77
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (403 KB)

    Numerical calculations were performed to clarify the focusing property of annular cylindrical high intensity proton beams in toroidal magnetic lens systems. The ion beams were assumed to be emitted uniformly from the annular anode at the diode voltage in a toroidal-magnetically insulated diode and to be force-free except for the deflecting forces due to the magnetic fields in the lens system. A si... View full abstract»

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  • Light ion beam transport in a multi-plasma channel system

    Publication Year: 1983, Page(s):78 - 81
    Cited by:  Papers (2)
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    The transportation of intense light ion beams through a laser-initiated plasma channel was performed. The ion beam was generated using a pinch-reflex ion diode mounted on Reiden IV, and was propagated through the channel. Beam trajectories, estimated from the damage pattern on the cellulosenitrate film, were in good agreement with the theoretical prediction. The beam overlap in a multi-plasma chan... View full abstract»

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  • Sausage instability in a proton-beam transport through wall-confined plasma channel in Nagaoka ETIGO-I

    Publication Year: 1983, Page(s):82 - 85
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (426 KB)

    Transport of an intense pulsed proton beam with an energy of 800-keV has been studied through a wall-confined, z-discharged plasma channel (1-m long) in the Nagaoka ETIGO-I. The transport efficiency increases with increasing channel current or decreasing channel pressure. Reasonable agreement is obtained between the experiment and the existing theories. Changing the timing between the channel curr... View full abstract»

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  • Intense proton beam plasma interactions

    Publication Year: 1983, Page(s):86 - 88
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    A study has been initiated to investigate interactions between an intense proton beam and a background hydrogen plasma. The magnetic and electric neutralization of the ion beam by the plasma as well as collective interactions between the beam and the plasma are objects of this study. The plasma is produced by a conical theta-pinch gun and injected into a 3 kG solenoidal guide field. Plasma densiti... View full abstract»

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  • Proto-I axial focusing experiments

    Publication Year: 1983, Page(s):89 - 92
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (354 KB)

    The time-integrated axial (z) focus of the 4.5cm-radius Proto I (1.5 MV, 500 kA) radial proton diode is presently limited to ∼3 mm FWHM. This result is obtained with current neutralized beam transport in a gas cell with 6 Torr argon. If the vertical local divergence were the same (1° or less) as the horizotal divergence, the local divergence alone would produce a 1.5 mm FWHM focus. The axial focal... View full abstract»

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  • Theoretical treatment of the current neutralization of high-intensity light ion beams in argon

    Publication Year: 1983, Page(s):93 - 96
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (365 KB)

    We have modeled the current neutralization of intense light ion beams propagating through low pressure argon gas in the drift region of the applied-B radial ion diode. Our description of the current neutralization process results in a set of equations, each having the form of a system with an intrinsic magnetic decay time constant and driven by the time derivative of the beam current. The time con... View full abstract»

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  • Transport and focusing considerations for light-ion ICF

    Publication Year: 1983, Page(s):97 - 100
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (421 KB)

    Channel transport of intense light-ion beams will be required for standoff in a survivable diode inertial confinement fusion (ICF) system. The standoff distance will also allow for time-of-flight beam bunching. Beam focusing both at the diode and after exiting the transport channel into a final focusing cell is also required to reduce the radius of the beams to pellet size. Efficient use of the av... View full abstract»

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  • Optimization of target irradiated by light ion beam

    Publication Year: 1983, Page(s):101 - 104
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    A proposal is given here for a method to optimize the cryogenic hollow shell target which consists of the three layers of Pb, Al and DT fuel. The target is named as “Niu target” and does a cannon type of implosion. By using a model that the ion beam deposits its energy instantaneously in the Al pusher in the target and the pusher expands adiabatically and homogeneously, the final implosion velosit... View full abstract»

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  • Alternative implosion concepts by particle beams and lasers

    Publication Year: 1983, Page(s):105 - 108
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    Three physical concepts of the target structures to increase the power density on the target were investigated experimentally applying a focused relativistic electron beam. In the plasma jet formation experiments on cylindrical and spherical Au targets, the clear evidence of plasma jet formation was shown. The experimental and computational study of a double foil acceleration have been conducted t... View full abstract»

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