Note: Arc discharge plasma source with plane segmented LaB6 cathode

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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“…8). The plasma source will be based on the existing design of [44]. Current state of this project is discussed in [45].…”

Section: Smola Device With Active Helical Mirror Confinementmentioning

confidence: 99%

Multiple-mirror trap: Milestones and future

Burdakov

Поступаев

2016

AIP Conference Proceedings

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“…Plasma is produced by a plasma gun located inside the end tank. The plasma gun [27] with a plane LaB6 cathode and magnetically insulated anode produces plasma with density n ~ 2×10 19 m -3 , and temperature T ~ 5 eV. The anode and cathode are both electrically floating against the grounded vacuum chamber.…”

Section: Helical Mirror Experiments -Hemexmentioning

confidence: 99%

The BINP road map for development of fusion reactor based on a linear machine

Ivanov

Burdakov

Bagryansky

et al. 2016

AIP Conference Proceedings

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Abstract. In the paper, we present the Budker Institute long term plans for laying the plasma physics database for an advanced fuel fusion reactor based on the axisymmetric linear magnetic trap. The general approach to development of the reactor utilizes the idea that confinement of a plasma with the highest pressure can be obtained in a linear device with multi-mirror end sections attached at both ends to suppress the axial plasma losses. To develop the required database a stepwise approach is applied, which suggests construction of the several experimental devices with progressively increasing plasma parameters, which incorporate the different constituents of the approach. Ultimately, after successfully proving the ideas in the experiments, a prototype of the reactor will be constructed in the Budker Institute.

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“…Plasma-material interaction studies usually require a steady-state uniform plasma flow at a sample of several centimeters in size, and a density of about 10 13 cm 3 in a magnetic field of several kilogauss [1]. Such plasmas can be produced using large-area LaB 6 (lanthanum hexaboride) hot cathodes [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…Such plasmas can be produced using large-area LaB 6 (lanthanum hexaboride) hot cathodes [1][2][3]. The PISCES plasma generator with a LaB 6 disk cathode demonstrated good performance and capability of continuous operation [2].…”

Section: Introductionmentioning

confidence: 99%