abstract

• Crystal x-ray imaging is frequently used in inertial confinement fusion and laser-plasma interaction applications as it has advantages compared to pinhole imaging, such as higher signal throughput, better achievable spatial resolution, and chromatic selection. However, currently used x-ray detectors are only able to obtain a single time resolved image per crystal. The dilation aided single-line-of-sight x-ray camera described here was designed for the National Ignition Facility (NIF) and combines two recent diagnostic developments, the pulse dilation principle used in the dilation x-ray imager and a ns-scale multi-frame camera that uses a hold and readout circuit for each pixel. This enables multiple images to be taken from a single-line-of-sight with high spatial and temporal resolution. At the moment, the instrument can record two single-line-of-sight images with spatial and temporal resolution of 35 μm and down to 35 ps, respectively, with a planned upgrade doubling the number of images to four. Here we present the dilation aided single-line-of-sight camera for the NIF, including the x-ray characterization measurements obtained at the COMET laser, as well as the results from the initial timing shot on the NIF.

authors

• Bailey, N G
• Bell, C
• Bird, E D
• Carey, J D
• Carpenter, A
• Chait, L D
• Chang, H
• Custer, B
• Detre, K
• Dymoke-Bradshaw, A K L
• Easton, C R
• Elder, J P
• Engel, S R
• Engelhorn, K
• Feeney, D M
• Gill, J C
• Gorter, J A
• Hegland, J
• Hilsabeck, T J
• Jauch, E C
• Layton, M J
• Macaraeg, C C
• Mitchell, C A
• PARK, L C
• Patel, J H
• Roberts, L W
• Sanchez, P
• Trosseille, C A

publication date

• October 2018

published in

• The Review of scientific instruments  Journal

Digital Object Identifier (DOI)

• https://doi.org/10.1063/1.5038671

PubMed ID

• 30399712

start page

end page

volume

• 89

number

• 10