Performance of CID camera x-ray imagers at NIF in a harsh neutron environment

Nathan E. Palmer; Marilyn B. Schneider; Perry M. Bell; Ken W. Piston; James D. Moody; D. Lynn James; Ron A. Ness; Michael J. Haugh; Joshua J. Lee; Edward D. Romano

doi:10.1117/12.2026851

26 September 2013 Performance of CID camera x-ray imagers at NIF in a harsh neutron environment

Nathan E. Palmer, Marilyn B. Schneider, Perry M. Bell, Ken W. Piston, James D. Moody, D. Lynn James, Ron A. Ness, Michael J. Haugh, Joshua J. Lee, Edward D. Romano

Author Affiliations +

Proceedings Volume 8850, Target Diagnostics Physics and Engineering for Inertial Confinement Fusion II; 885009 (2013) https://doi.org/10.1117/12.2026851
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

Charge-injection devices (CIDs) are solid-state 2D imaging sensors similar to CCDs, but their distinct architecture makes CIDs more resistant to ionizing radiation. CID cameras have been used extensively for X-ray imaging at the OMEGA Laser Facility with neutron fluences at the sensor approaching 10⁹ n/cm² (DT, 14 MeV). A CID Camera X-ray Imager (CCXI) system has been designed and implemented at NIF that can be used as a rad-hard electronic-readout alternative for time-integrated X-ray imaging. This paper describes the design and implementation of the system, calibration of the sensor for X-rays in the 3 - 14 keV energy range, and preliminary data acquired on NIF shots over a range of neutron yields. The upper limit of neutron fluence at which CCXI can acquire useable images is ~ 10⁸ n/cm² and there are noise problems that need further improvement, but the sensor has proven to be very robust in surviving high yield shots (~ 10¹⁴ DT neutrons) with minimal damage.

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Nathan E. Palmer, Marilyn B. Schneider, Perry M. Bell, Ken W. Piston, James D. Moody, D. Lynn James, Ron A. Ness, Michael J. Haugh, Joshua J. Lee, and Edward D. Romano "Performance of CID camera x-ray imagers at NIF in a harsh neutron environment", Proc. SPIE 8850, Target Diagnostics Physics and Engineering for Inertial Confinement Fusion II, 885009 (26 September 2013); https://doi.org/10.1117/12.2026851

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