Diagnostics development plan for ZR.

Abstract

The Z Refurbishment (ZR) Project is a program to upgrade the Z machine at SNL with modern durable pulsed power technology, providing additional shot capacity and improved reliability as well as advanced capabilities for both pulsed x-ray production and high pressure generation. The development of enhanced diagnostic capabilities is an essential requirement for ZR to meet critical mission needs. This report presents a comprehensive plan for diagnostic instrument and infrastructure development for the first few years of ZR operation. The focus of the plan is on: (1) developing diagnostic instruments with high spatial and temporal resolution, capable of low noise operation and survival in the severe EMP, bremsstrahlung, and blast environments of ZR; and (2) providing diagnostic infrastructure improvements, including reduced diagnostic trigger signal jitter, more and flexible diagnostic line-of-sight access, and the capability for efficient exchange of diagnostics with other laboratories. This diagnostic plan is the first step in an extended process to provide enhanced diagnostic capabilities for ZR to meet the diverse programmatic needs of a broad range of defense, energy, and general science programs of an international user community into the next decade. ZR Diagnostics Development Plan ________________________________________________________________________ 4 AcknowledgementsThe author would like to thank

Z 箍缩等离子体的图像分幅诊断技术

“…对于在阳加速器上开展的 Z 箍缩内爆试验图像 分幅诊断技术而言, 随着对其性能的研究深入和测 试手段的进步, 已提出了对 Z 箍缩过程的研究必须 具备高的时间分辨测量, 时间分辨测量的重要性在 于可以了解喷气 Z 箍缩前期、中期、后期及等离子 体界面不稳定性发展过程、丝阵 Z 箍缩过程等物理 现象 [1] , 并获得了定量分析的实验数据. 过去曾作过 用扫描相机获取 Z 箍缩等离子体演变过程的摄影技 术研究 [2] , 由于所获结果仅限于等离子体区域上的 一条细线, 图像数据非常不全面, 无法对 Z 箍缩的全 面状况进行描述, 甚至有时候无法解释等离子体区 扭曲、崩溃的现象 [3] ; 所以要进行时间分辨测量, 必 须具有幅间间隔时间 10 ns、每幅曝光时间不大于 5 ns 高速分幅相机. 结合快电子技术、图像增强技术、 光学分光技术等多门学科的成果, 研制的可用于时 间分辨测量领域的高速分幅相机, 幅间间隔时间达 到 10 ns, 每幅曝光时间不大于 5 ns, 一次可以获得 8 幅图像, 图像分辨率为 1376×1035, 标准幅面可以达 到80 mm; 利用该相机建立一套在阳加速器上开 展的 Z 箍缩内爆实验图像分幅测量系统, 系统由高 速分幅图像采集部分、控制部分、触发时间同步系 统组成.…”