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Chen H, Palmer N, Dayton M, et al. A high-speed two-frame, 1-2 ns gated X-ray CMOS imager used as a hohlraum diagnostic on the National Ignition Facility (invited). Rev Sci Instrum. 2016;87(11):11E203doi: 10.1063/1.4962252.
Chen, H., Palmer, N., Dayton, M., Carpenter, A., Schneider, M. B., Bell, P. M., Bradley, D. K., Claus, L. D., Fang, L., Hilsabeck, T., Hohenberger, M., Jones, O. S., Kilkenny, J. D., Kimmel, M. W., Robertson, G., Rochau, G., Sanchez, M. O., Stahoviak, J. W., Trotter, D. C., & Porter, J. L. (2016). A high-speed two-frame, 1-2 ns gated X-ray CMOS imager used as a hohlraum diagnostic on the National Ignition Facility (invited). The Review of scientific instruments, 87(11), 11E203. https://doi.org/10.1063/1.4962252
Chen, Hui, et al. "A high-speed two-frame, 1-2 ns gated X-ray CMOS imager used as a hohlraum diagnostic on the National Ignition Facility (invited)." The Review of scientific instruments vol. 87,11 (2016): 11E203. doi: https://doi.org/10.1063/1.4962252
Chen H, Palmer N, Dayton M, Carpenter A, Schneider MB, Bell PM, Bradley DK, Claus LD, Fang L, Hilsabeck T, Hohenberger M, Jones OS, Kilkenny JD, Kimmel MW, Robertson G, Rochau G, Sanchez MO, Stahoviak JW, Trotter DC, Porter JL. A high-speed two-frame, 1-2 ns gated X-ray CMOS imager used as a hohlraum diagnostic on the National Ignition Facility (invited). Rev Sci Instrum. 2016 Nov;87(11):11E203. doi: 10.1063/1.4962252. PMID: 27910306.
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Rev Sci Instrum. 2016 Nov;87(11):11E203. doi: 10.1063/1.4962252.

A high-speed two-frame, 1-2 ns gated X-ray CMOS imager used as a hohlraum diagnostic on the National Ignition Facility (invited).

The Review of scientific instruments

Hui Chen, N Palmer, M Dayton, A Carpenter, M B Schneider, P M Bell, D K Bradley, L D Claus, L Fang, T Hilsabeck, M Hohenberger, O S Jones, J D Kilkenny, M W Kimmel, G Robertson, G Rochau, M O Sanchez, J W Stahoviak, D C Trotter, J L Porter

Affiliations

  1. Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  2. Sandia National Laboratories, Albuquerque, New Mexico 87123, USA.
  3. General Atomics, San Diego, California 92186, USA.
  4. Laboratory for Laser Energetics, Rochester, New York 14623, USA.

PMID: 27910306 DOI: 10.1063/1.4962252

Abstract

A novel x-ray imager, which takes time-resolved gated images along a single line-of-sight, has been successfully implemented at the National Ignition Facility (NIF). This Gated Laser Entrance Hole diagnostic, G-LEH, incorporates a high-speed multi-frame CMOS x-ray imager developed by Sandia National Laboratories to upgrade the existing Static X-ray Imager diagnostic at NIF. The new diagnostic is capable of capturing two laser-entrance-hole images per shot on its 1024 × 448 pixels photo-detector array, with integration times as short as 1.6 ns per frame. Since its implementation on NIF, the G-LEH diagnostic has successfully acquired images from various experimental campaigns, providing critical new information for understanding the hohlraum performance in inertial confinement fusion (ICF) experiments, such as the size of the laser entrance hole vs. time, the growth of the laser-heated gold plasma bubble, the change in brightness of inner beam spots due to time-varying cross beam energy transfer, and plasma instability growth near the hohlraum wall.

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