An infrared interferometer for investigating subthermonuclear plasma in the GOL-3 multimirror trap

Burmasov, V. S.; Bobylev, V.B.; Ivanova, Alina; Ivanenko, S. V.; Kasatov, A. A.; Kasatov, D. A.; Kruglyakov, E. P.; Kuklin, K. N.; Попов, Сергей Сергеевич; Поступаев, В. В.; Puryga, E. A.; Rovenskikh, A. F.; Sklyarov, V. F.

doi:10.1134/s0020441212020145

Cited by 6 publications

(1 citation statement)

References 9 publications

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“…This diagnostics was located at z = 190 cm. The plasma density was measured at z = 379 cm by using a 10.6-μm Michelson interferometer [21] and at z = 610 cm by using a 280-GHz interferometer. Vacuum ultraviolet (VUV) plasma radiation was monitored at z = 57 and 522 cm by using two identical vacuum photodiodes with aluminum photocathodes.…”

Section: Experimental Setup and Diagnostic Techniquesmentioning

confidence: 99%

Experiments on the transportation of a magnetized plasma stream in the GOL-3 facility

et al. 2016

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The program of the deep upgrade of the GOL-3 multiple-mirror trap is presented. The upgrade is aimed at creating a new GOL-NB open trap located at the GOL-3 site and intended to directly demonstrate the efficiency of using multiple-mirror magnetic cells to improve longitudinal plasma confinement in a gasdynamic open trap. The GOL-NB device will consist of a new central trap, adjoint cells with a multiple-mirror magnetic field, and end tanks (magnetic flux expanders). Plasma in the central trap will be heated by neutral beam injection with a power of up to 1.5 MW and duration of 1 ms. At present, physical experiments directed at developing plasma technologies that are novel for this facility are being carried out using the 6-m-long autonomous part of the GOL-3 solenoid. The aim of this work was to develop a method for filling the central trap with a low-temperature start plasma. Transportation of a plasma stream from an arc source over a distance of 3 m in a uniform magnetic field with an induction of 0.5-4.5 T is demonstrated. In these experiments, the axial plasma density was (1-4) × 10 20 m -3 and the mirror ratio varied from 5 to 60. In general, the experiments confirmed the correctness of the adopted decisions for the start plasma source of the GOL-NB device.

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Section: Experimental Setup and Diagnostic Techniquesmentioning

confidence: 99%

Experiments on the transportation of a magnetized plasma stream in the GOL-3 facility

et al. 2016

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Observation of spectral composition and polarization of sub-terahertz emission from dense plasma during relativistic electron beam–plasma interaction

et al. 2014

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The paper presents results of measurements of sub-terahertz electromagnetic emission from magnetized plasma during injection of a powerful relativistic electron beam of microsecond duration in plasma with the density of 3 × 1014 cm−3. It was found that the spectrum of the radiation concentrated in three distinct regions with high level of spectral power density. The first region is located near f1 = 100 GHz; the second one is in the vicinity of 190 GHz, and the third region is in the frequency interval f3 = 280–340 GHz. Polarization vectors of the emission in the first and third regions (f1 and f3) are directed mainly perpendicular to the magnetic field in the plasma. At the same time, the polarization of the radiation in the vicinity of f2 = 190 GHz is parallel to the magnetic field. The most likely mechanism of electromagnetic wave generation in the frequency regions f1 and f2 is the linear conversion of the plasma oscillations into the electromagnetic waves on strong gradients of the plasma density. The third region is situated in the vicinity of second harmonic of electron plasma frequency, and we explain this emission by the coalescence of the upper-hybrid oscillations at high level turbulence in plasma.

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Diagnostic system to study sub-THz emission from open trap at strong beam-plasma interaction

Аржанников¹,

Burdakov²,

Burmasov³

et al. 2016

AIP Conference Proceedings

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Neutral beam (NB) injector for the TCV tokamak has been designed to produce a deuterium beam with energy 30 keV, equivalent current up to 50 A, and pulse duration 2 s. The injector operation is accompanied by generation of fast neutrons produced in deuterium-deuterium collisions via a nuclear fusion reaction D(D,n)3He. Main sources of the neutrons are a beam neutralizer and a deuterium-saturated surface of beam dump. Measurements of the neutron yields from the both sources were produced on the prototype of TCV injector in the Budker Institute of Nuclear Physics. Neutron yields from neutralizer and beam dump are equal to 9.5x10 8 s −1 and 2.3x10 9 s −1 for the nominal parameters of the injector (30 kV, 50 A).

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An infrared interferometer for investigating subthermonuclear plasma in the GOL-3 multimirror trap

Cited by 6 publications

References 9 publications

Experiments on the transportation of a magnetized plasma stream in the GOL-3 facility

Experiments on the transportation of a magnetized plasma stream in the GOL-3 facility

Observation of spectral composition and polarization of sub-terahertz emission from dense plasma during relativistic electron beam–plasma interaction

Diagnostic system to study sub-THz emission from open trap at strong beam-plasma interaction

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