Capabilities of the Reconfigured Cobra Accelerator

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI:10.1109/PPC.2005.300595

J. Douglass, J. Greenly, D. Hammer, B. Kusse, J. T. Blanchard, L. Maxson, R. Mcbride, H. Wilhelm, S. Glidden, S. Grasso, H. Sanders

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引用次数: 5

Abstract

The COBRA accelerator at Cornell University has been reconfigured for use with wire arrays. Design goals included 1 MA peak current with a variable zero to peak current rise-time of as little as 100 ns. COBRA is now driven by two Marx generators, each of which feeds a parallel-plate water capacitor. These capacitors are switched into four parallel pulse-forming lines via self-breaking gas switches. Each pulse-forming line is switched into a vacuum adder via a laser-triggered gas switch that can be independently triggered to provide different pulse shapes to a wire array Z-pinch load. A stainless steel, magnetically insulated current convolute similar to that of the Z-Machine at Sandia National Laboratories connects the output switches to the load. A typical load consists of a 4-8 wire cylindrical array with a diameter of 1.6 cm and a height of 2 cm. To date the refurbished COBRA has over 300 shots. These shots have been used for various reasons including machine diagnostic calibration, laser-triggered switch timing and self breaking switch adjustments as well as experiments with cylindrical wire array and high current X-pinch loads.

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重新配置的眼镜蛇加速器的能力

康奈尔大学的COBRA加速器已经被重新配置为使用线阵列。设计目标包括1毫安的峰值电流，从零到峰值电流的可变上升时间仅为100毫纳。COBRA现在由两个马克思发电机驱动，每个发电机为一个平行板水电容器供电。这些电容器通过自断气体开关切换成四条平行的脉冲形成线。每条脉冲形成线都通过激光触发的气体开关切换到真空加法器中，该开关可以独立触发，为线阵列z夹紧负载提供不同的脉冲形状。与桑迪亚国家实验室的Z-Machine类似的不锈钢磁绝缘电流涡旋将输出开关连接到负载上。一个典型的负载由4-8线圆柱阵列组成，直径为1.6厘米，高度为2厘米。到目前为止，翻新后的COBRA已经拍摄了300多张照片。这些镜头被用于各种原因，包括机器诊断校准，激光触发开关定时和自断开关调整，以及圆柱形线阵列和大电流x点压负载的实验。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2005 IEEE Pulsed Power Conference

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