Fermilab Energy Doubler Beam Position Detector

This paper describes the design and performance of the beam position detector being installed in the Fermilab superconducting Energy Doubler accelerator. The detector is a stripline pickup designed to operate at 4 degrees Kelvin and with beam intensities ranging from 108 to 1011 protons per RF bucket at 53 MHz. The detector design, signal amplitude, positional sensitivity, directivity, and longitudinal impedance are presented.