Computational modeling of long implosion time z pinches on the Saturn generator

Details Computational modeling of long implosion time z pinches on the Saturn generator Computational modeling of long implosion time z pinches on the Saturn generator

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aps..dppgp1057d&link_type=abstract

American Physical Society, 42nd Annual Meeting of the APS Division of Plasma Physics combined with the 10th International Congre

Physics

Plasma Physics

Scientific paper

Long implosion time wire array experiments have been carried out on the 7-MA Saturn accelerator at Sandia National Laboratories. Such experiments are motivated by the incentive that longer implosion times translate to reduced cost and power flow risk to existing and future, high current generators. However, this mode of driver is desirable only if similar implosion velocities and subsequent powers can be achieved that are comparable to a short pulse mode, i.e., 50 ns implosion time. To investigate pinch performance in the long pulse mode, wire number scans were performed with Al at 32 mm and 40 mm array diameters. Wire numbers ranged from 32 to 440 wires and the mass at each diameter was kept essentially constant. This experimental series also included a number of nested array shots with a 20 mm diam. inner array and a 40 mm diam. outer array, where wire number was varied in both arrays while maintaining a constant implosion time. Experimental results will be briefly summarized and a suite of radiation magnetohydrodynamic simulations that provide insight into the experimental trends will be presented. *Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the US Department of Energy under Contract DE-AC04-94AL85000.

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