Study of the mechanism for fast ion heating in the GOL-3 multimirror magnetic confinement system

Аржанников, А. В.; Astrelin, V. T.; Бурдаков, А. В.; Иванов, И. А.; Koǐdan, V. S.; Kuznetsov, S. А.; Mekler, K. I.; Polosatkin, S. V.; Поступаев, В. В.; Rovenskikh, A. F.; Sinitskii, S. L.; Sulyaev, Yu. S.; Shoshin, A. A.

doi:10.1134/1.1947331

Cited by 27 publications

(12 citation statements)

References 9 publications

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“…We consider the parameter set typical of fusion-related experiments on plasma heating by a relativistic electron beam in mirror traps. [19][20][21][22] This example is interesting not only in the context of operating facilities, but also due to the discovered conflict between the exact results and earlier approximate models. According to the existing notion 14,15 which is based on the hydrodynamic approximation, the increase in the magnetic field results in monotonic decrease in oblique wave's growth rates: at low fields the oblique modes dominate, while at high fields the instability is almost one dimensional.…”

Section: Direct Computation Of the Growth Rate For The Instability Ofmentioning

confidence: 98%

Direct computation of the growth rate for the instability of a warm relativistic electron beam in a cold magnetized plasma

2009

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The fully kinetic, fully electromagnetic dispersion equation for a warm relativistic electron beam in a cold magnetized plasma is numerically solved with no simplifying assumptions made. For magnetic fields of various strengths, the growth rate maps for the beam-plasma instability are plotted and dominant modes are identified. The exact solution is compared with available approximate solutions. The latter are shown to misinterpret the effect of the magnetic field on the instability of oblique waves.

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Section: Direct Computation Of the Growth Rate For The Instability Ofmentioning

confidence: 98%

Direct computation of the growth rate for the instability of a warm relativistic electron beam in a cold magnetized plasma

2009

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“…Collective heating creates electroni cally hot plasma with a non Maxwellian distribution function of electrons. Due to the collective mecha nism of energy transfer from electrons to ions, the ion temperature in the hottest part of the plasma column lies in the 2 to 3 keV range [8]. The use of a multimir ror confinement system (corrugated magnetic field) allows achieving a much longer confinement of hot plasma than in a simple solenoidal trap.…”

Section: Gol 3 Facility and Lasermentioning

confidence: 99%

Diagnostic system for studying generation of subterahertz radiation during beam-plasma interaction in the GOL-3 facility

et al. 2012

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The design principles and construction of the subterahertz radiometric spectral systems developed for the GOL 3 facility are described. The spectral systems are designed according to the quasi optical scheme and use multilayer filters based on frequency selective surfaces. The design and manufacturing technology of such elements are discussed. The results of measuring subterahertz radiation of plasma at the frequency close to the double plasma frequency are presented.

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“…Simultaneously with this, ions acquired high temperature up to 2 -4 keV [24,25] that evidenced for a new collective mechanism that exists in the corrugated magnetic field only. Such mechanism was first suggested in [26]; later it was carefully studied in [27]. The key element of it is a collective acceleration of ion flows by electron pressure directed from mirrors towards midplanes of mirror cells at anomalously suppressed thermal conductivity during the beam injection.…”

Section: Fast Ion Heating In Multiple-mirror Trapmentioning

confidence: 99%

“…As the result, fast and effective energy transfer from electrons to ions occurs at optimal conditions. Large axial density gradients were predicted and actually measured by Thomson scattering [27]. …”

Section: Fast Ion Heating In Multiple-mirror Trapmentioning

confidence: 99%

Multiple-mirror trap: Milestones and future

Burdakov

Поступаев

2016

AIP Conference Proceedings

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Abstract.A fusion reactor concept on the basis of a linear trap is developing in BINP. These studies incorporate multiple-mirror sections which should reduce significantly longitudinal plasma losses from a confinement zone. In the paper, physics on the multiple-mirror confinement relevant to plasma behavior at reactor conditions will be discussed. Basic results were received in the GOL-3 multiple-mirror trap in which plasma of 10 21 m -3 density was heated by a highpower electron beam up to 2 -4 keV temperature. The key milestones were: the demonstration of effective plasma heating by the electron beam due to collective effects, the achievement of theoretically predicted level of energy confinement time under optimal conditions, and finally, the discovery of a bounce instability that improves longitudinal confinement. Direct demonstration of a confinement improvement by multi-mirror sections in the magnetic configuration relevant to the reactor one will be done in the GOL-NB facility that will be created in BINP. In addition, a new plasma device SMOLA with a helical multiple-mirror magnetic field for an active confinement control is discussed.

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Study of the mechanism for fast ion heating in the GOL-3 multimirror magnetic confinement system

Cited by 27 publications

References 9 publications

Direct computation of the growth rate for the instability of a warm relativistic electron beam in a cold magnetized plasma

Direct computation of the growth rate for the instability of a warm relativistic electron beam in a cold magnetized plasma

Diagnostic system for studying generation of subterahertz radiation during beam-plasma interaction in the GOL-3 facility

Multiple-mirror trap: Milestones and future

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