A Gas Dynamic Trap Neutron Source for Fusion Material and Subcomponent Testing

Molvik, A.W.; Ivanov, A. A.; Kulcinski, G.L.; Ryutov, D. D.; Santarius, J. F.; Simonen, T.C.; Wirth, Brian D.; Ying, Alice

doi:10.13182/fst10-a9499

Cited by 27 publications

(13 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Scaling based on existing achievements would generate 0.3 MW/m 2 of neutron flux. [35][36][37] The results are consistent with theoretical predictions of electron heat loss suppression by a strong flaring of the magnetic field. 38 The dimensionless scaling shows that the physics will allow reaching the required plasma parameters.…”

Section: Fusion-relevant Irradiation Sourcessupporting

confidence: 85%

Fusion Nuclear Science Pathways Assessment

Kessel¹

2012

View full text Add to dashboard Cite

This paper reviews US R&D requirements for magnets to be used in a post-ITER fusion machine that would have a nuclear mission. The state of the art of magnets is presented, followed by potential magnet options in the near (< 10 years) and middle term (> 10 years), followed by a description of the different components and system integration issues. The characteristics of an R&D program for investigate these issues is described, followed by a description of the present US facilities.

show abstract

Section: Fusion-relevant Irradiation Sourcessupporting

confidence: 85%

Fusion Nuclear Science Pathways Assessment

Kessel¹

2012

View full text Add to dashboard Cite

show abstract

“…2) The mirror plasma is a neutron source with advantages as described by Ryutov et al [1], Post et al [10] [11] and Ivanov [12]. The mirror group at the Budker Institute is currently designing a mirror machine to produce a 14 MeV neutron source for the determining the life-time of wall materials exposed to the neutron and plasma fluxes [13].…”

Section: Attractive Features Of Mirror Machines For Near-term Steps Imentioning

confidence: 99%

Tandem Mirror Experiment for Basic Fusion Science

Horton¹,

Alvarado²,

Fu³

et al. 2014

WJNST

View full text Add to dashboard Cite

Research on controlled nuclear fusion has been largely concentrated on plasma confinement using toroidal magnetic fields. Toroidal systems are complex. A simpler magnetic confinement system may provide a valuable platform for understanding fusion plasmas. The linear mirror machine has delivered good performance with the potential of giving a direct conversion of nuclear energy into electric power. The GAMMA-10 (G-10) linear mirror confinement system at Tsukuba University demonstrated the principle of the direct conversion of plasma energy into electric power on a small scale from the exhaust plasma in the exterior divertor chamber. The tokamak fusion system has to prove that the 10 to 15 MA of plasma current can be sustained continuously with acceptable efficiency. Plasma confinement is due to the magnetic field from the plasma current in tokamaks. There is room for creative new solutions in the magnetic confinement of fusion plasmas, and consideration is given for the alternative approach of using a linear machine with high magnetic mirror fields and the direct conversion of the high temperature escaping plasma to electric power.

show abstract

“…We expect a facility like this to be preceded by a neutron source that will develop steady-state neutral beams (possibly with direct conversion of the unneutralized ion beam), cryopanels with regeneration, tritium-generating lithium blankets, and fusion-fission hybrid blankets. The simplest neutron source is likely to be a magnetic mirror system based on the axisymmetric Gas Dynamic Trap (GDT) at the Budker Institute of Nuclear Physics, Novosibirsk, Russia [Ivanov 2010]. One such design is the Dynamic-Trap Neutron Source (DTNS) , Simonen 2010, Fischer 2000, Bagryansky 2004], which could function as a Fusion-Nuclear Science Facility (FSNF) [Greenwald 2007].…”

Section: General Commentsmentioning

confidence: 99%

“…The confidence in the practicality of axisymmetric MHD-stable mirrors has increased significantly after a set of experiments conducted in 2005-2010 on the upgraded axisymmetric mirror machine GDT at Novosibirsk (Ivanov et al, 2010). It routinely operates at a plasma beta equal to 0.6 and average ion energy of a few keV, with the plasma axial losses being in a good agreement with the classical predictions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Axisymmetric Magnetic Mirror Fusion-Fission Hybrid

Moir

Martovetsky

Molvik

et al. 2011

Self Cite

View full text Add to dashboard Cite

The achieved performance of the gas dynamic trap version of magnetic mirrors and today's technology we believe are sufficient with modest further efforts for a neutron source for material testing (Q=P fusion /P input~0 .1). The performance needed for commercial power production requires considerable further advances to achieve the necessary high Q>>10. An early application of the mirror, requiring intermediate performance and intermediate values of Q~1 are the hybrid applications. The Axisymmetric Mirror has a number of attractive features as a driver for a fusion-fission hybrid system: geometrical simplicity, inherently steady-state operation, and the presence of the natural divertors in the form of end tanks. This level of physics performance has the virtue of low risk and only modest R&D needed and its simplicity promises economy advantages. Operation at Q~1 allows for relatively low electron temperatures, in the range of 4 keV, for the DT injection energy ~ 80 keV. A simple mirror with the plasma diameter of 1 m and mirror-to-mirror length of 35 m is discussed. Simple circular superconducting coils are based on today's technology. The positive ion neutral beams are similar to existing units but designed for steady state. A brief qualitative discussion of three groups of physics issues is presented: axial heat loss, MHD stability in the axisymmetric geometry, microstability of sloshing ions.

show abstract

A Gas Dynamic Trap Neutron Source for Fusion Material and Subcomponent Testing

Cited by 27 publications

References 47 publications

Fusion Nuclear Science Pathways Assessment

Fusion Nuclear Science Pathways Assessment

Tandem Mirror Experiment for Basic Fusion Science

Axisymmetric Magnetic Mirror Fusion-Fission Hybrid

Contact Info

Product

Resources

About