Abstract
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) × 1020 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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Original Russian Text © V.V. Postupaev, V.I. Batkin, A.V. Burdakov, I.A. Ivanov, K.N. Kuklin, K.I. Mekler, A.F. Rovenskikh, 2016, published in Fizika Plazmy, 2016, Vol. 42, No. 4, pp. 321–330.
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Postupaev, V.V., Batkin, V.I., Burdakov, A.V. et al. Experiments on the transportation of a magnetized plasma stream in the GOL-3 facility. Plasma Phys. Rep. 42, 319–326 (2016). https://doi.org/10.1134/S1063780X16040073
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DOI: https://doi.org/10.1134/S1063780X16040073