HEL-1: a DEMG based demonstration of solid liner implosions at 100 MA

Reinovsky, R.E.; Anderson, Brendon G.; Clark, David; Ekdahl, C.A.; Faehl, R.J.; Goforth, J.H.; Lindemuth, I.R.; Petersen, T.L.; Sheehey, P.T.; Tabaka, L.J.; Chernyshev, V.K.; Mokhov, V.N.; Buzin, V.N.; Byrenkov, O.M.; Bujko, A.M.; Vakhruchev, V.V.; Garanin, S. F.; Grinevich, B. E.; Gorbachev, Y.N.; Gubkov, E.V.; Demidov, V.A.; Dudoladov, V.I.; Zmushko, V.V.; Kuzyaev, A.I.; Kucherov, A.I.; Lovyagin, B.M.; Matsev, Y.I.; Nizovtsev, P. N.; Petrukhin, À.À.; Pishurov, A.I.; Соколов, С. С.; Solovjov, Vladimir P.; Startsev, A.I.; Yakubov, V.B.

doi:10.1109/ppc.1997.679360

Cited by 12 publications

(1 citation statement)

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“…For larger currents, fast explosively driven flux compressors have been demonstrated to drive imploding liners with currents exceeding 100 MA. 4 At Los Alamos, experiments are currently being performed on the Pegasus 4.3-MJ fast capacitor bank. Pegasus delivers up to 12 MA to imploding liner experiments with approximately 6-µs current rise time.…”

Section: Pulsed Power For Hydrodynamic Experimentsmentioning

confidence: 99%

Pulsed power experiments in hydrodynamics and material properties

Reinovsky

2000

IEEE Trans. Plasma Sci.

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In the last five years, a new application for a high performance pulsed power program has joined the traditional family of radiation source applications in the Stockpile Stewardship. This new application is the production of high energy density environments in materials for the study of material properties and hydrodynamics in complex geometries. The principle tool for producing high energy density environments is the high precision, magnetically imploded, near-solid density liner. The most attractive pulsed power system for driving such experiments is an ultra-high current, low impedance, microsecond time scale source that is economical both to build and operate.Two families of pulsed power systems can be applied to drive such experiments. The 25-MJ Atlas capacitor bank system currently under construction at Los Alamos is the first system of its scale specifically designed to drive high precision solid liners. Delivering 30 MA, Atlas will provide liner velocities 12-15 km/sec and kinetic energies of 1-2 MJ/cm with extensive diagnostics and excellent reproducibility. Explosive flux compressor technology provides access to currents exceeding 100 MA producing liner velocities above 25 km/sec and kinetic energies of 5-20 MJ/cm in single shot operations.In this paper we will review basic scaling arguments that set the scope of the environments available with pulsed power drive. We will overview the pulsed power technology under development at Los Alamos for high energy density experiments and provide a summary of results from exploration of the physics limiting the performance of near solid metal liners under magnetic drive. We will present few examples of hydrodynamic experiments performed with interim systems.

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Section: Pulsed Power For Hydrodynamic Experimentsmentioning

confidence: 99%

Pulsed power experiments in hydrodynamics and material properties

Reinovsky

2000

IEEE Trans. Plasma Sci.

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Caballero: a high current flux compressor system for 100 MJ solid liner experiments

Reinovsky

Atchison²,

Goforth³

et al. 1998

IEEE Trans. Plasma Sci.

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Pulse power systems delivering in excess of 1OOfvlJ represent one of the next major challenges to the pulse power community. While a laboratory pulse power system in this energy range is feasible, it represents a very substantial investment of both time and resources. Prudence requires that fundamental proof-of-principle for the contemplated application is established before such massive resources are committed. Explosive pulse power systems using magnetic flux compression provide a direct path to such demonstrations. Furthermore, as energy requirements grow, single use explosive systems may represent the only affordable source of ultra-high energy environments.Currently two flux compressor configurations are under consideration for powering solid liner implosions at currents above 100 MA and at energies above 100 MJ. A simultaneously initiated coaxial flux compressor (Ranchero) is described in a companion paper. A modular, center initiated disk configuration, generally patterned after the DEMG' is the other candidate. Ether can drive loads directly or can conceptually be connected in parallel with flat plate transmission lines to increase current delivery.Phenomenological models and conceptual designs for DEMG systems have been previously reported. In this paper we report the results of the experimental test of a first generation disk generator system. Individual disk segments have been tested with framing camera diagnostics to evaluate overall performance, dynamics and fabrication failure points. In general no bulk failures were observed in several shots and the critical weld joints maintained their integrity for at least 4 ps after arrival of the detonation front. Single module pulse power experiments have been conducted at reduced initial current (1.5 -2.0 MA) with a fixed inductance load of 0.22 nH.-

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