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Fielding of a time-resolved tomographic diagnostic

机译:现场时间断层扫描诊断

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A diagnostic instrument has been developed for the acquisition of high-speed time-resolved images at the Dual-Axis Radiographic Hydrodynamic Test (DARHT) Facility at Los Alamos National Laboratory. The instrument was developed in order to create time histories of the electron beam. Four discrete optical subsystems view Cerenkov light generated at an x-ray target inside of a vacuum envelope. Each system employs cylindrical optics to image light in one direction and collapse light in the orthogonal direction. Each of the four systems images and collapses in unique axes, thereby capturing unique information. Light along the imaging axis is relayed via optical fiber to streak cameras. A computer is used to reconstruct the original image from the four optically collapsed images. Due to DARHT's adverse environment, the instrument can be operated remotely to adjust optical parameters and contains a subsystem for remote calibration. The instrument was deployed and calibrated, and has been used to capture and reconstruct images. Matters of alignment, calibration, control, resolution, and adverse conditions will be discussed.
机译:已经开发了一种诊断仪器,用于在洛斯阿拉莫斯国家实验室的双轴射线照相水动力测试(DARHT)设施中采集高速时间分辨图像。开发该仪器是为了创建电子束的时间历史。四个分立的光学子系统可查看在真空封套内部的X射线目标处产生的切伦科夫光。每种系统都采用柱面光学器件在一个方向上成像并在正交方向上折叠光。四个系统中的每一个都在唯一的轴上成像并折叠,从而捕获唯一的信息。沿成像轴的光通过光纤中继到条纹摄像机。使用计算机从四个光学折叠的图像中重建原始图像。由于DARHT的不利环境,该仪器可以远程操作以调节光学参数,并且包含一个用于远程校准的子系统。该仪器已部署和校准,并已用于捕获和重建图像。将讨论对准,校准,控制,分辨率和不利条件的问题。

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