Performance of the Neutron Imaging Camera (NIC)

The Neutron Imaging Camera (NIC) is based on the Three-Dimensional Track Imager (3-DTI) technology developed at NASA/GSFC for gamma-ray astrophysics applications. The 3-DTI, a large volume time projection chamber, provides accurate, $\sim $0.4mm resolution, 3-D tracking of charged particles. The incident direction of fast neutrons, E$_{n} \quad >$ 0.5 MeV, are reconstructed from the momenta and energies of the proton and triton fragments resulting from $^{3}$He(n,p)$^{3}$H interactions in the 3-DTI volume. We will discuss the NIC performance, including the angular and energy response, derived from a 2$\sim $3 MeV neutron accelerator beam.