Variable-pulse-shape pulsed-power accelerator
| DWPI Title: Variable-pulse-shape pulsed-power accelerator for driving megabar-class material physics experiments, has convolute for connecting radial transmission lines in parallel at radius to provide variable shaped power pulse to load |
| Abstract: A variable-pulse-shape pulsed-power accelerator is driven by a large number of independent LC drive circuits. Each LC circuit drives one or more coaxial transmission lines that deliver the circuit's output power to several water-insulated radial transmission lines that are connected in parallel at small radius by a water-insulated post-hole convolute. The accelerator can be impedance matched throughout. The coaxial transmission lines are sufficiently long to transit-time isolate the LC drive circuits from the water-insulated transmission lines, which allows each LC drive circuit to be operated without being affected by the other circuits. This enables the creation of any power pulse that can be mathematically described as a time-shifted linear combination of the pulses of the individual LC drive circuits. Therefore, the output power of the convolute can provide a variable pulse shape to a load that can be used for magnetically driven, quasi-isentropic compression experiments and other applications. |
| Use: Variable-pulse-shape pulsed-power accelerator for driving megabar-class material physics experiments. |
| Advantage: The accelerator increases a dielectric constant of an insulating material to reduce impedance of the cable while maintaining approximate diameter and voltage hold-off properties. The accelerator allows impedance transformers to be impedance matched to the water-insulated radial transmission lines in a central-power-flow section to minimize reflections and maximize power delivered to the load. |
| Novelty: The accelerator has a coaxial transmission line for a LC drive circuits that receive power pulse from the LC drive circuit and are sufficiently long to transit time to isolate power pulses. A central-power-flow section comprises water-insulated radial transmission lines that receive and combine transit-time isolated power pulses from the coaxial transmission lines to form radially converging power pulse. A water-insulated post-hole convolute connects the water-insulated radial transmission lines in parallel at small radius to provide variable shaped power pulse to a load. |
| Filed: 8/24/2015 |
| Application Number: US14833993A |
| Tech ID: SD 12830.2 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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