PBFA II-Z: A 20-MA driver for z-pinch experiments

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Sandia is modifying the PBFA II accelerator into a dual use facility. While maintaining the present ion-beam capability, we are developing a long-pulse, high-current operating mode for magnetically-driven implosions. This option, called PBFA II-Z, will require new water transmission lines, a new insulator stack, and new magnetically-insulated transmission lines (MITLs). Each of the existing 36, coaxial water pulse-forming sections will couple to a 4.5-{Omega}, bi-plate water-transmission line. The water transmission lines then feed a four-level insulator stack. The insulators are expected to operate at a maximum, spatially-averaged electric field of {approximately}l00 kV/cm. The MITL design is based on the successful ... continued below

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10 p.

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Creator: Unknown. December 1, 1995.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Sandia is modifying the PBFA II accelerator into a dual use facility. While maintaining the present ion-beam capability, we are developing a long-pulse, high-current operating mode for magnetically-driven implosions. This option, called PBFA II-Z, will require new water transmission lines, a new insulator stack, and new magnetically-insulated transmission lines (MITLs). Each of the existing 36, coaxial water pulse-forming sections will couple to a 4.5-{Omega}, bi-plate water-transmission line. The water transmission lines then feed a four-level insulator stack. The insulators are expected to operate at a maximum, spatially-averaged electric field of {approximately}l00 kV/cm. The MITL design is based on the successful biconic Saturn design. The four ``disk`` feeds will each have a vacuum impedance of {approximately}2.0 {Omega}. The disk feeds are added in parallel using a double post-hole convolute at a diameter of 15 cm. We predict that the accelerator will deliver 20 MA to a 15-mg z-pinch load in 100 ns, making PBFA II-Z the most powerful z-pinch driver in the world providing a pulsed power and load physics scaling testbed for future 40-80-MA drivers.

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10 p.

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INIS; OSTI as DE96003067

Source

  • 10. Institute of Electrical and Electronics Engineers (IEEE) pulsed power conference, Albuquerque, NM (United States), 10-13 Jul 1995

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  • Other: DE96003067
  • Report No.: SAND--95-2704C
  • Report No.: CONF-950750--48
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 164910
  • Archival Resource Key: ark:/67531/metadc628312

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  • December 1, 1995

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  • June 16, 2015, 7:43 a.m.

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  • April 13, 2016, 4:12 p.m.

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PBFA II-Z: A 20-MA driver for z-pinch experiments, article, December 1, 1995; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc628312/: accessed December 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.