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

Conference · Sat Mar 01 04:00:00 EST 2008

OSTI ID:926224

Moy, Kenneth; Wu, Ming

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.

• Research Organization: National Security Technologies, LLC
• Sponsoring Organization: USDOE - National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC52-06NA25946
• OSTI ID: 926224
• Report Number(s): DOE/NV/25946--379
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
DESIGN
FLEXIBILITY
LASERS
OPTICS
PERFORMANCE
PHOTOCATHODES
RADIATIONS
SANDIA NATIONAL LABORATORIES
X-RAY SPECTRA
hohlraums
imager
microchannel plate
photocathodes
x-ray spectra