Progress toward a measurement of parity violation in $\vec n + p \rightarrow d + \gamma$

The weak part of the nucleon-nucleon interaction produces small parity-violating asymmetries in the gamma rays emitted during polarized neutron capture. The asymmetry for capture on hydrogen is directly related to the nucleon-pion coupling, without complication from nuclear structure, and has an estimated size $50\times 10^{-9}$. With its installation in fall 2005 of a liquid parahydrogen target at the Los Alamos Neutron Science Center, the NPDGamma collaboration can begin to measure this asymmetry directly. I will report the status of the target system and the run plan for the next year, and discuss our plans to achieve our design sensitivity $5\times 10^{-9}$ using the higher flux at the Spallation Neutron Source.