Ion hose instability

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August undefined, 2024

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. WebThe 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 …

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WebThe ion-hose instability growth between the accelerator and the septum quad is small, even without the strong Proceedings of 2005 Particle Accelerator Conference, Knoxville, Tennessee 0-7803-8859-3/05/$20.00 c2005 IEEE 376. solenoidal magnetic field as in the accelerator, because 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. canon キヤノン rf24-105mm f4-7.1 is stm

Implementation of Spread Mass Model of Ion Hose Instability …

Web19 mrt. 2003 · The 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 … 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 … Web1 apr. 1997 · A relativistic electron beam magnetically self-focused in a plasma is subject to an electrostatic hose instability. A linear theory of hose growth is formulated taking into account nonlinear... canon スキャン設定方法 windows10

Wake-ﬁeld and fast head-tail instability caused by an electron …

Hosing Instability of the Drive Electron Beam in the E157 Plasma ...

WebA relativistic electron beam, propagating in an underdense ion‐focusing channel that is embedded within a broad region of underdense plasma, is shown to be subject to a hose instability due to coupling with plasma electrons at the edge of the pure‐ion region. The instability is studied by means of linearized analytic calculations of dispersion relations … WebThe 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 … flaim meaningWebIn order to support commissioning experiments in the DARHT-II induction linac at Los Alamos National Laboratory, a spreadmass code is improved so that the parameter space for the experiment can be surveyed quickly. Computer simulations of the ion-hose effect typically use Particle-In-Cell (PIC) computer codes or codes using the spread-mass … canon キヤノン rf100-400mm f5.6-8 is usm

"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 … " - Ion hose instability

Ion hose instability

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 … 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 …

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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 … WebThe ion-hose instability sets limits on the allowable vacuum in the DARHT-2 linear induction accelerator (2kA, 18.6MeV, 2µ s). Lamda is a transport code which advances the beam centroid and envelope in a linear induction accelerator from the injector to …

WebThe 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 ... Web19 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 …

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 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).

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 …

Web11 nov. 2004 · A Study of the Ion Hose Instability in the DARHT-II Downstream Transport Region (Technical Report) OSTI.GOV skip to main content Sign In Create Account … flaim schoolWebthe ion-hose@11# and the fast beam-ion instability@6#. The ion-hose instability occurs if an electron beam is injected into a plasma, where the beam ﬁeld expels the electrons. A two-stream instability can then develop between the gener-ated plasma channel and the beam. The ion-hose instability is weakened by a solenoid ﬁeld, which produces ... flail wikipediaWebhose instability is a purely growing mode, or equivalently, is an aperiodic instability) provided the following condition for the instability is satisfied; The above instability … flaim wolsey hall chartered accountantsWebThe ion hose instability, which can seriously disrupt an IREB propagating in a focusing ion channel, is studied for the charge neutral Bennett-pinched beam. A rigid beam approximation predicts that the instability occurs in the long wavelength region, has a strong resonant growth, and has features of an absolute instability. flaim wolsey portalWebIon-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. flain 54WebThe 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. canon プリンター my image gardenWebThe growth and saturation of the ion-hose instability in an applied axial magnetic field is examined. This dipole streaming instability is an important factor in determining the time … flaim wolsey hall cpa