Performance of CID camera X-ray imagers at NIF in a harsh neutron environment
- LLNL
- NSTec
Charge-injection devices (CIDs) are solid-state 2D imaging sensors similar to CCDs, but their distinct architecture makes CIDs more resistant to ionizing radiation.1–3 CID cameras have been used extensively for X-ray imaging at the OMEGA Laser Facility4,5 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.
- Research Organization:
- Nevada Test Site (NTS), Mercury, NV (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- DOE Contract Number:
- DE-AC52-06NA25946
- OSTI ID:
- 1136281
- Report Number(s):
- DOE/NV/25946-1889
- Journal Information:
- Proceedings of SPIE, Target Diagnostics Physics and Engineering for Inertial Confinement Fusion II, Vol. 8850; Conference: SPIE 2013 Optics + Photonics, August 25-29, 2013, San Diego, CA
- Country of Publication:
- United States
- Language:
- English
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