Characterization Studies and Performance of Half-strip High-speed X-ray Microchannel Plate Imager

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High-speed microchannel plate (MCP)–based imagers are critical detectors for x-ray diagnostics employed on Z-experiments at Sandia National Laboratories (SNL) to measure time-resolved x-ray spectra and to image dynamic hohlraums. A design using eight half-strip x-ray photocathodes in one imager permits recordings of radiation events in discrete temporal snapshots to yield a time-evolved movie. We present data using various facilities to characterize the performance of this design. These characterization studies include DC and pulsed-voltage biased measurements in both saturated and linear operational regimes using an intense, short-pulsed UV laser and Manson source. Surface voltage profile measurements using a picoprobe help to ... continued below

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Moy, Kenneth & Wu, Ming March 1, 2008.

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High-speed microchannel plate (MCP)–based imagers are critical detectors for x-ray diagnostics employed on Z-experiments at Sandia National Laboratories (SNL) to measure time-resolved x-ray spectra and to image dynamic hohlraums. A design using eight half-strip x-ray photocathodes in one imager permits recordings of radiation events in discrete temporal snapshots to yield a time-evolved movie. We present data using various facilities to characterize the performance of this design. These characterization studies include DC and pulsed-voltage biased measurements in both saturated and linear operational regimes using an intense, short-pulsed UV laser and Manson source. Surface voltage profile measurements using a picoprobe help to determine the gain variation across the strips. Test data from a recent SNL ZR-experiment demonstrates the flexibility and high-quality images obtained by this MCP imager.

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  • SPIE Optics & Photonics: NanoScience + Engineering Conference - 2008 San Diego Convention Center; San Diego, CA; August 10-14, 2008

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  • Report No.: DOE/NV/25946--379
  • Grant Number: DE-AC52-06NA25946
  • Office of Scientific & Technical Information Report Number: 926224
  • Archival Resource Key: ark:/67531/metadc893653

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  • March 1, 2008

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  • Sept. 27, 2016, 1:39 a.m.

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  • Oct. 31, 2016, 7:46 p.m.

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Moy, Kenneth & Wu, Ming. Characterization Studies and Performance of Half-strip High-speed X-ray Microchannel Plate Imager, article, March 1, 2008; United States. (digital.library.unt.edu/ark:/67531/metadc893653/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.