A 1 MA, variable risetime pulse generator for high energy density plasma research
- Laboratory of Plasma Studies, 439 Rhodes Hall, Cornell University, Ithaca, New York 14853 (United States)
- Applied Pulsed Power, Inc., 2025 Dryden Road, P.O. Box 348, Ithaca, New York 13068 (United States)
COBRA is a 0.5 {omega} pulse generator driving loads of order 10 nH inductance to >1 MA current. The design is based on independently timed, laser-triggered switching of four water pulse-forming lines whose outputs are added in parallel to drive the load current pulse. The detailed design and operation of the switching to give a wide variety of current pulse shapes and rise times from 95 to 230 ns is described. The design and operation of a simple inductive load voltage monitor are described which allows good accounting of load impedance and energy dissipation. A method of eliminating gas bubbles on the underside of nearly horizontal insulator surfaces in water was required for reliable operation of COBRA; a novel and effective solution to this problem is described.
- OSTI ID:
- 21124036
- Journal Information:
- Review of Scientific Instruments, Vol. 79, Issue 7; Other Information: DOI: 10.1063/1.2949819; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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