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Ion hose instability

Web22 jun. 2001 · Abstract: The ion-hose instability is a transverse electrostatic instability which occurs on electron beams in the presence of a low-density ion channel. In the … WebIon-Hose Instability in Long Pulse Induction Accelerators George J. Caporaso and Jim. F. McCarrick Lawrence Livermore National Laboratory, Livermore, California 94550 USA Abstract The ion-hose (or fast-ion) instability sets limits on the allowable vacuum in a long-pulse, high current accelerator.

The Ion-Hose Instability in a High-Current Multipulse Linear …

Web4 apr. 2024 · 2. Source term S = − ( ρ − J z, p) (black lines) as assumed in the model and resulting focusing field (blue lines) in a plasma column (solid lines) and a homogeneous plasma (dashed lines). In a plasma column with a radius Rp smaller than the blowout radius Rb, the focusing field is reduced at the blowout radius. PPT. Web29 mei 1992 · The conditions, when as a result of ion-hose instability development may be coming out of the channel by beam tail, were founded. It was showed, that suplementary creation of plasma by electron beam and ions did not … ford solid axle conversion https://centrecomp.com

A Study of the Ion Hose Instability in the DARHT-II Downstream ...

WebThe ion-hose (or fast-ion) instability sets limits on the allowable vacuum in a long-pulse, high current accelerator. Beam-induced ionization of the background gas leads … Web16 mei 2024 · instability know as the electron hose instability. The linear theory of electron-hose instability in a uniform ion column predicts that for the parameters of the E157 experiment (beam charge, bunch length, and plasma density) a growth of the centroid offset should occur. Analysis of the E157 data has provided four critical results. The Web7 okt. 2024 · The ion-hose instability is considered to be a potential danger for long-pulse, high-current electron linear induction accelerators (LIAs). As is shown in this The Ion … emani hit and run

Ion-hose instability growth and saturation for counterstreaming ...

Category:Amplitude of beam and ion channel from the SM code (beam …

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Ion hose instability

Firehose instability - Wikipedia

WebThe ion-hose instability is considered to be a potential danger for long-pulse, high-current electron linear induction accelerators (LIAs). As is shown in this paper, it is also a concern for multipulse LIAs. WebAn electron beam focused by an ion channel without a magnetic field, in the so-called ion focus regime (IFR), may be disrupted by the transverse ion hose instability. We …

Ion hose instability

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WebThis instability is a direct result of beam-electron ionization of residual background gas, and the growth rate is proportional to the ion density. In a typical accelerator vacuum, there is … Webhose instability is a purely growing mode, or equivalently, is an aperiodic instability) provided the following condition for the instability is satisfied; The above instability …

Web1 jun. 1993 · The growth rate of the ion-hose instability has been measured for a 2.5 MeV, 1 kA, 1 {mu}sec electron beam following plasma channels of O{sub 2}, N{sub 2}, and … WebThe paper is organized as follows: in Section 2 we present linear theory predictions of the parallel fire hose, focussing in particular on the differences between proton and alpha contributions in driving the instability and the influence of a velocity drift between the species; in Section 3 we discuss the feedback of the instability on the plasma, deriving …

WebA Plasma instability is a region where turbulence occurs due to changes in the characteristics of a plasma (eg. temperature, density, electric fields, magneti fields). As the name suggests, instabilities are unstable, though they may appear to evolve through different forms (morphology). WebThe ion hose instability in the ion‐focused regime is analyzed using a rigid beam model with phenomenological damping terms. Values of the instability wavelength, e‐folding …

WebThe ion- hose instability is a transverse electrostatic instability which occurs as a result of the interaction between the beam and the ion channel transverse motions.

ford solenoid cummins heater gridWebThe ion-hose instability has been identified as a key limiting factor in long-pulse electron induction linacs [1– 3]. This instability is well known, and has been studied in detail for electron beams in induction linacs operating in the ion-focusing regime (IFR). This instability is similar in function to the resistive hose instability [4,5 ... ford solutionWeb18 okt. 2004 · ABSTRACT. The growth and saturation of the ion-hose instability in an applied axial magnetic field is examined. This dipole streaming instability is an … ford solenoid packWeb19 aug. 1991 · The asymptotic growth of beam-centroid oscillations is computed, and the growth length is found to be very rapid, indeed much less than the betatron period of the beam. A relativistic electron beam propagating through an ummagnetized, underdense plasma exhibits a transverse instability due to the coupling of the beam centroid to … fords on 4th tucson azThe firehose instability (or hose-pipe instability) is a dynamical instability of thin or elongated galaxies. The instability causes the galaxy to buckle or bend in a direction perpendicular to its long axis. After the instability has run its course, the galaxy is less elongated (i.e. rounder) than before. Any sufficiently thin stellar system, in which some component of the internal velocity is in the form … fordson alumni facebookWebThe ion-hose instability is a transverse electrostatic instability which occurs on electron beams in the presence of a low-density ion channel. It is a phenomenon quite similar … ford solid axle conversion kitWeb1 jun. 1993 · The hose instability, which is seeded by initial transverse beam and/or plasma phase space asymmetries, is growing rapidly due to the extreme transverse fields, which can be on the same order... fords of winsford phone number