Gas dynamic trap as high power 14 MeV neutron source

Bagryansky, P. A.; Ivanov, A. A.; Kruglyakov, E. P.; Kudryavtsev, A. M.; Tsidulko, Yu. A.; Andriyash, A. V.; Lukin, A.L.; Zouev, Yu.N.

doi:10.1016/j.fusengdes.2003.08.002

Cited by 80 publications

(36 citation statements)

References 22 publications

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“…Relative to previous magnetic mirror neutron sources, the GDT facility uses simpler axisymmetric magnets providing about 2 MW/m 2 neutron flux. Recent results with high β=0.6 provide a firm basis for extrapolating to a fusion relevant high-flux neutron source [2]. Another important application of the GDT neutron source is nuclear waste processing based on fusion driven burning of minor actinides.…”

Section: Introductionmentioning

confidence: 93%

Auxiliary ECR heating system for the gas dynamic trap

et al. 2012

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Physics aspects of a new system for electron cyclotron resonance heating (ECRH) at the magnetic mirror device Gas Dynamic Trap (GDT, Budker Institute, Novosibirsk) are discussed. This system based on two 400 kW/54.5 GHz gyrotrons is aimed at increasing the electron temperature up to the range 250–350 eV for improved energy confinement of hot ions. The key physical issue of the GDT magnetic field topology is that conventional ECRH geometries are not accessible. The proposed solution is based on a peculiar effect of radiation trapping in inhomogeneous magnetized plasma. Under specific conditions, oblique launch of gyrotron radiation results in generation of right-hand-polarized (R) electromagnetic waves propagating with high N|| in the vicinity of the cyclotron resonance layer, which leads to effective single-pass absorption of the injected microwave power. In the present paper, we investigate numerically an optimized ECRH scenario based on the proposed mechanism of wave propagation and discuss the design of the ECRH system, which is currently under construction at the Budker Institute.

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Section: Introductionmentioning

confidence: 93%

Auxiliary ECR heating system for the gas dynamic trap

et al. 2012

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“…For this reason, the electron temperature is the main factor limiting the confinement time of fast ions and, thus, the power efficiency of a beam-driven fusion reactor 13 . Success in ECRH experiments at GDT is convincing enough to consider the prospects of simple axially symmetric open magnetic traps as a high-power neutron source for a number of fusion applications 14 , including material testing, a hybrid fusion-fission reactor and nuclear waste processing 12,[15][16][17][18] .…”

Section: Introductionmentioning

confidence: 99%

Electron cyclotron emission at the fundamental harmonic in GDT magnetic mirror

et al. 2017

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New electron cyclotron emission (ECE) diagnostics has been installed to facilitate the successful experiment on electron cyclotron plasma heating (ECRH) experiment at the large open magnetic trap GDT in Budker Institute. The particularities of ECE in the vicinity of the ECRH frequency were studied experimentally for a broad range of discharge scenarios. Measured thermal emission has partly validated the existing physical conceptions about the microwave plasma heating in the machine. Besides expected emission of thermal electrons, a clearly resolved non-thermal ECE was observed what unambiguously confirmed the presence of suprathermal electrons driven by highpower microwave heating.

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“…These electron temperatures are adequate for a neutron source that needs Te 700 eV to test and develop fusion materials, or to initiate work on subcritical fission reactors and nuclear waste processing based on a fusion driven burning of minor actinides [10]. In addition, these results encourage expectations that the higher temperatures needed for fusion power are possible.…”

Section: Demonstration Of the Electron Temperature Of Kev Rangementioning

confidence: 80%

Recent progress of plasma confinement and heating studies in the gas dynamic trap

Bagryansky

Anikeev

et al. 2016

AIP Conference Proceedings

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Abstract. The paper includes a brief overview of previous researches on the stabilization of MHD instabilities, study of micro-instabilities, and demonstration a tangible increase of the electron temperature with application of auxiliary ECR heating. A review of the results of recent researches related to application of microwave radiation for plasma generation, and plasma heating in the GDT device is presented. The paper summarizes also recent results of researches that oriented on study of expander physics.

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Gas dynamic trap as high power 14 MeV neutron source

Cited by 80 publications

References 22 publications

Auxiliary ECR heating system for the gas dynamic trap

Auxiliary ECR heating system for the gas dynamic trap

Electron cyclotron emission at the fundamental harmonic in GDT magnetic mirror

Recent progress of plasma confinement and heating studies in the gas dynamic trap

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