Automated Focusing of the ROSS Streak Tube Electron Optics
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The streak camera development program at LLE
The Diagnostic Development Group at the Laboratory for Laser Energetics has endeavored to build a stand-alone, remotely operated streak camera with comprehensive autofocus and self-calibration capability. Designated as the Rochester Optical Streak System (ROSS), it is a generic streak camera platform, capable of accepting a variety of streak tubes. The system performance is limited by the insta...
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Streak cameras are used to study the x-rays that are emitted from Inertial Confinement Fusion (ICF) targets as they implode. These cameras operate by using a photocathode to convert the x-ray flux to a secondary electron current. Secondary electrons are then focused onto a phosphor screen using the streak tube electron optics, and finally recorded using a charged coupled device (CCD) camera. Th...
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6 LLE Review, Volume 73 A streak camera is an electro-optic instrument capable of resolving high-speed, low-repetition-rate, pulsed laser phenomena. The basis of the instrument is a streak tube. The image of the light to be analyzed is focused onto a photocathode at the input end of the streak tube. The photocathode emits electrons in response to the intensity of the light. The electrons, focus...
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In the streak tube laser imaging system, there are two conflicts: the first is between high spatial resolution and wide field of view (FOV). The second is between high temporal resolution and deep depth of field (DOF). In this paper, a new non-scanning streak tube laser imaging system is presented. A microlens array with three different apertures is used to non-uniformly collect data from the i...
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تاریخ انتشار 2006