On the design of magnetically insulated transmission lines for z-pinch loads

Spielman, R. B.; Reisman, D. B.

doi:10.1063/1.5089765

On the design of magnetically insulated transmission lines for z-pinch loads

Journal Article · Mon Mar 11 00:00:00 EDT 2019 · Matter and Radiation at Extremes

DOI:https://doi.org/10.1063/1.5089765· OSTI ID:1502380

Spielman, R. B. ^[1]; Reisman, D. B. ^[2]

Univ. of Rochester, Rochester, NY (United States); Laboratory for Laser Energetics, University of Rochester
Univ. of Rochester, Rochester, NY (United States)

Many papers have been published on the theory of magnetic insulation and the use of Z_flow analysis of magnetically insulated transmission lines (MITL’s). We describe herein a novel design process using the circuit code SCREAMER, for a real-world MITL for z-pinch loads based on the Z_flow model of magnetic insulation. In particular, we design a 15-TW, 10-MA, 100 ns double-disk transmission lines using only circuit modeling tools and Z_flow analysis of the MITL. Critical issues such as current loss to the anode during the setup of magnetic insulation and the transition from a non-emitting vacuum power feed to a MITL play a large role in the MITL design. This very rapid design process allows us for the first time to explore innovative MITL designs such as variable-impedance MITL’s that provide a significantly lower total inductance and improved energy delivery to the load. In conclusion the tedious process of modeling the final MITL design with highly resolved 2-D and 3-D electromagnetic particle-in-cell codes occurs as a validation step, not as part of the design process.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0001944

OSTI ID:: 1502380

Report Number(s):: 2018-162, 1476; 2018-162, 1476, 2435

Journal Information:: Matter and Radiation at Extremes, Journal Name: Matter and Radiation at Extremes Journal Issue: 2 Vol. 4; ISSN 2468-2047

Country of Publication:: United States

Language:: English

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Editorial for special issue on Z-pinches Lebedev, Sergey; Spielman, R. B.; Li, Xingwen Matter and Radiation at Extremes, Vol. 4, Issue 6 https://doi.org/10.1063/1.5121890	journal	November 2019

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