Spatial resolution measurements of the advanced radiographic capability x-ray imaging system at energies relevant to Compton radiography

G N Hall; N Izumi; O L Landen; R Tommasini; J P Holder; D Hargrove; D K Bradley; A Lumbard; J G Cruz; K Piston; J J Lee; E Romano; P M Bell; A C Carpenter; N E Palmer; B Felker; V Rekow; F V Allen

doi:10.1063/1.4959948

Spatial resolution measurements of the advanced radiographic capability x-ray imaging system at energies relevant to Compton radiography

Rev Sci Instrum. 2016 Nov;87(11):11E310. doi: 10.1063/1.4959948.

Authors

G N Hall¹, N Izumi¹, O L Landen¹, R Tommasini¹, J P Holder¹, D Hargrove¹, D K Bradley¹, A Lumbard¹, J G Cruz¹, K Piston¹, J J Lee², E Romano², P M Bell¹, A C Carpenter¹, N E Palmer¹, B Felker¹, V Rekow¹, F V Allen¹

Affiliations

¹ Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA.
² National Security Technologies LLC, 161 S Vasco Rd., Livermore, California 94551, USA.

PMID: 27910309
DOI: 10.1063/1.4959948

Abstract

Compton radiography provides a means to measure the integrity, ρR and symmetry of the DT fuel in an inertial confinement fusion implosion near peak compression. Upcoming experiments at the National Ignition Facility will use the ARC (Advanced Radiography Capability) laser to drive backlighter sources for Compton radiography experiments and will use the newly commissioned AXIS (ARC X-ray Imaging System) instrument as the detector. AXIS uses a dual-MCP (micro-channel plate) to provide gating and high DQE at the 40-200 keV x-ray range required for Compton radiography, but introduces many effects that contribute to the spatial resolution. Experiments were performed at energies relevant to Compton radiography to begin characterization of the spatial resolution of the AXIS diagnostic.