The characteristics of small γ-ray probe detectors (hemispherical contact geometry) made from Cl- and In-doped Bridgman-grown crystals of CdTe are described. A slow, low-temperature anneal of as-grown CdTe ranging from 485 to 85°C, and cooled at a rate of < 20°C/h, was found to greatly improve detector performance. Best photopeak to Compton edge ratios were 2:1 for 662 keV γ-rays. Typical values were 1:1 with energy resolutions of 5% full width at half maximum. Energy resolution was ∼ 13.5% for 185 keV γ-rays from a235U (93%) source.