To accelerate both protons and heavy ions, the AGS Booster requires a broadband (multi-octave) beam position monitoring system with a dynamic range spanning several orders of magnitude (2 x 10'° to 1.5 x 10" particles per pulse). System requirements include the ability to acquire single turn trajectory and average orbit information with ±0.1 mm resolution. The design goal of ± 0.5 mm corrected accuracy requires that the detectors have repeatable linear performance after periodic bakeout at 300°C. The system design and capabilities of the Booster Beam Position Monitor will be described, and initial results presented.

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