title: A new aperture for neutron and x-ray imaging of inertial confinement fusion experiments.
abstract: Recent  neutron imaging of experiments at the National Ignition Facility has provided useful information about the hotspot shape and cold-fuel distribution and has also given insight into avenues for improvement. Neutron image reconstruction depends on accurate pointing information because the point-spread function of the neutron aperture is not shift invariant. Current pointing techniques are limited in their accuracy and rely upon detailed information about the as-built structure of the array, which is difficult to determine. We present a technique for extracting high-precision pointing information from both neutron and x-ray images, and a new aperture design with features to facilitate this technique, and allow future co-registration of neutron and x-ray images.
authors.affiliation: Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.forename: C R
authors.initials: CR
authors.lastname: Danly
authors.forename: G P
authors.initials: GP
authors.lastname: Grim
authors.forename: N
authors.initials: N
authors.lastname: Guler
authors.forename: M H
authors.initials: MH
authors.lastname: Intrator
authors.forename: F E
authors.initials: FE
authors.lastname: Merrill
authors.forename: P
authors.initials: P
authors.lastname: Volegov
authors.forename: C H
authors.initials: CH
authors.lastname: Wilde