Measurement of the Background Gamma Spectrum at the SNS FP12

The NPDGamma experiment is running at the Fundamental Neutron Physics Beamline (FP13) of the Spallation Neutron Source (SNS). It will measure the parity violating weak contribution to the long range part of the hadronic interaction in the reaction n + p $\to$ d + gamma. We have measured the background gamma-ray spectrum in the FP13 experimental area using a high purity germanium detector. Various sources of background are discussed, including the supermirror polarizer, and materials in the target and detector array, and their projected effect on the NPDGamma experiment.