The neutron imaging system for inertial confinement fusion at the 100 kilo-Joule laser facility

The neutron imaging system based on the penumbral aperture for the inertial confinement fusion research at the 100 kilo-Joule laser facility has been developed. The aperture has been designed with a geometric model and fabricated by machining one half double-tapered cylinder into each of two tungsten slabs. The aperture is mounted into a box which helps to precisely fix two slabs to form a biconic-shaped aperture. The neutron image recording system has been constructed with a capillary-array neutron image detector, and tested with the static accelerator neutron source. The spatial resolution of neutron image detector can be within 1.1 mm. The preliminary results of neutron imaging system in the exploding pusher target experiment at the 100 kilo-Joule laser facility have been presented.