Bulletin of the American Physical Society
64th Annual Meeting of the APS Division of Plasma Physics
Volume 67, Number 15
Monday–Friday, October 17–21, 2022; Spokane, Washington
Session GO06: ICF: Measurement and Diagnostic Techniques
9:30 AM–12:30 PM,
Tuesday, October 18, 2022
Room: Ballroom 111 C
Chair: Roberto Mancini, University of Nevada, Reno
Abstract: GO06.00009 : Development of multiframe time-gated x-ray backlighting for the Z Facility using multile laser pulse produced plasma x-ray source.*
11:06 AM–11:18 AM
Presenter:
Aaron Edens
(Sandia National Laboratories)
Authors:
Aaron Edens
(Sandia National Laboratories)
Anthony P Colombo
(Sandia National Labs)
Quinn Looker
(Sandia National Labs)
Jeff Kellogg
(Sandia National Labs)
Christopher S Speas
(Sandia National Labs)
Patrick K Rambo
(Sandia National Labs)
Robert R Speas
(Sandia National Labs)
Ian C Smith
(Sandia National Labs)
Michael C Jones
(Sandia National Laboratories)
John L Porter
(Sandia National Labs)
The present generation of Sandia’s Ultrafast X-ray Imager (UXI) high-speed digital x-ray framing cameras are able to operate successfully in the Z vacuum chamber and can replace image plate as the backlighting detector. A UXI camera’s ability to record multiple images on a few nanosecond time scale and along a single line-of-sight makes it feasible to increase the number of radiographs per shot by generating multiple x-ray pulses per laser beam. However, this requires additional source development, which we have begun and are reporting on.
A potential roadblock to realizing multi-frame backlighting with multiple laser pulses is that the interaction of subsequent laser pulses with the x-ray target is uncertain. We have empirically studied this effect with ZBL and identified a set of laser and target parameters to create multiple x-ray pulses of sufficient fluence for radiography on Z. We will present the latest results from fielding UXI cameras on Z as time-gated backlighting detectors both for suppression of target self-emission in radiograph images and for obtaining extra frames.
*Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International Inc., for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-NA0003525.
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