New compact hohlraum configuration research at the 1.7 MA Z-pinch generator

Journal Article · Mon Dec 15 04:00:00 EST 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4904787· OSTI ID:22390812

Shrestha, I. K.; Esaulov, A. A.; Safronova, A. S.; Shlyaptseva, V. V.; Osborne, G. C.; Astanovitsky, A. L.; Weller, M. E.; Stafford, A.; Schultz, K. A.; Cooper, M. C. ^[1]; Chuvatin, A. S. ^[2]; Rudakov, L. I. ^[3]; Velikovich, A. L. ^[4]; Cuneo, M. E.; Jones, B.; Vesey, R. A. ^[5]

---

1. Physics Department, University of Nevada, Reno, NV 89557 (United States)
2. Laboratorie de Physique des Plasmas, Ecole Polytechnique, 91128 Palaiseau (France)
3. Icarus Research Inc., P.O. Box 30780, Bethesda, MD 20824-0780 (United States)
4. Plasma Physics Division, Naval Research Laboratory, Washington, DC 20375 (United States)
5. Sandia National Laboratories, Albuquerque, NM 87110 (United States)

A new compact Z-pinch x-ray hohlraum design with parallel-driven x-ray sources was experimentally demonstrated in a full configuration with a central target and tailored shine shields (to provide a symmetric temperature distribution on the target) at the 1.7 MA Zebra generator. This presentation reports on the joint success of two independent lines of research. One of these was the development of new sources – planar wire arrays (PWAs). PWAs turned out to be a prolific radiator. Another success was the drastic improvement in energy efficiency of pulsed-power systems, such as the Load Current Multiplier (LCM). The Zebra/LCM generator almost doubled the plasma load current to 1.7 MA. The two above-mentioned innovative approaches were used in combination to produce a new compact hohlraum design for ICF, as jointly proposed by SNL and UNR. Good agreement between simulated and measured radiation temperature of the central target is shown. Experimental comparison of PWAs with planar foil liners (PFL) - another viable alternative to wire array loads at multi-MA generators show promising data. Results of research at the University of Nevada Reno allowed for the study of hohlraum coupling physics at University-scale generators. The advantages of new hohlraum design applications for multi-MA facilities with W or Au double PWAs or PFL x-ray sources are discussed.

• OSTI ID: 22390812
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1639; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COMPARATIVE EVALUATIONS
DESIGN
ENERGY EFFICIENCY
ICF DEVICES
INERTIAL CONFINEMENT
LINEAR Z PINCH DEVICES
LINERS
LONGITUDINAL PINCH
PLASMA
POWER SYSTEMS
RADIATORS
SHIELDS
SYMMETRY
TEMPERATURE DISTRIBUTION
X RADIATION
X-RAY SOURCES