Predicted Pulsed-Power/Flash-Lamp Performance of the NIF Main Amplifier
MAXWELL PHYSICS INTERNATIONAL SAN LEANDRO CA
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The laser glass for the National Ignition Facility NIF Main Amplifier system is pumped by a system of 192 pulsed powerflash lamp assemblies. Each of these 192 assemblies consists of a 1.6 MJ nominal capacitor bank working with a Pre-IonizationLamp Check PILC pulser to drive an array of 40 flash lamps. This paper describes the predicted performance of these Power Conditioning System PCS modules in concert with flashlamp assemblies in NIF. Each flashlamp assembly consists of 20 parallel sets of lamps in series pairs. The sensitivity of system performance to various design parameters of the PILC pulser and the main capacitor bank is described. Results of circuit models are compared to sub-scale flashlamp tests and to measurements taken in tests of a PCS module driving a flashlamp assembly in the First Article NIF Test Module facility at Sandia National Laboratories. Also included are predictions from a physics-based, semi-empirical amplifier gain code.
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