  Recent progress on the development of very low noise high purity germanium
ionization spectrometers has produced an instrument of 1.2 kg mass and
excellent noise performance. The detector was installed in a low-background
cryostat intended for use in a direct detection search for low mass, WIMP dark
matter. This Transaction reports the thermal characterization of the cryostat,
specifications of the newly prepared 1.2 kg p-type point contact germanium
detector, and the spectroscopic performance of the integrated system. The
integrated detector and low background cryostat achieved
full-width-at-half-maximum noise performance of 98 eV for an electronic pulse
generator peak and 1.9 keV for the 1332 keV Co-60 gamma ray.
