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A compact strip-line pulsed power generator for isentropic compression experiments
1Sandia National Laboratories, Albuquerque, New Mexico 87185, USA.
The Review of Scientific Instruments
|February 6, 2008
Summary
Veloce, a compact pulsed power generator, enables detailed isentropic compression experiments (ICE). Researchers examined key issues like sample preparation and loading uniformity for accurate dynamic material testing.
Area of Science:
- Pulsed Power Physics
- Materials Science
Background:
- Veloce is a novel medium-voltage, high-current pulsed power generator.
- It offers increased availability and ease of operation compared to larger machines like the Z accelerator.
- Its application in dynamic material experiments using compact pulsed power technology is new.
Purpose of the Study:
- To validate the Veloce generator for detailed isentropic compression experiments (ICE).
- To investigate critical factors influencing experimental accuracy, including panel/sample preparation, loading uniformity, and edge effects.
- To utilize magnetohydrodynamic (MHD) simulations for result interpretation and improved experimental design.
Main Methods:
- Experimental examination of panel and sample preparation techniques.
- Assessment of loading uniformity and edge effects in dynamic material experiments.
- Magnetohydrodynamic (MHD) simulations using the ALEGRA code for analysis and design.
Main Results:
- Key issues affecting experimental accuracy were identified and examined.
- MHD simulations provided insights into experimental results and informed design improvements.
- Successful application of Veloce for ICE studies on aluminum was demonstrated.
Conclusions:
- Veloce is a suitable platform for detailed isentropic compression experiments.
- Careful attention to experimental parameters like sample preparation and loading is crucial for accuracy.
- Integrated experimental and simulation approaches enhance the understanding of dynamic material behavior.
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